Re: [Elecraft] Questions on KXBC3 charging mechanism
I think this is answered in the manual. For 2500 mAh cells, this is on page 4. The KXBC3 charges at 200 mA throughout the charging time set, suggesting that 2000 mAH cells would be charged in 10 hours (referred in battery literature as a C/10 rate). However, the charging process is not 100% efficient, so additional charging time must be added, typically 20%. So a fully depleted 2000 mAH battery would require about 12 hours to reach full capacity. The charging time must be adjusted for batteries of different capacity as follows: Charging Time (hours) = 1.2 X (cell mAH rating) / 200 For example, to charge fully depleted 2500 mAH cells: 1.2 X 2500 / 200 = 15 hours (Set charger for 16 hours) https://ftp.elecraft.com/KX3/Manuals%20Downloads/E740167%20Elecraft%20KXBC3%20Installation%20and%20Operation%20Rev%20B1.pdf wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 27, 2021, at 3:46 PM, Geert Jan de Groot wrote: > > Hi, > > Searching the web and searching the mail archive didn't find the result I was > looking for, but I found a number of broken links pointing to now-defunct > Yahoo groups on this matter.. > > I'm confused on the charging method used on the KXBC3 charger. > The standard low-current charge method for NiMH is "14 hours, 0.1C", so in > the case of my 1900mAh eneloops, 14 hours of 190 mA. The KX3 manual doesn't > say much, but the KXBC3 manual specifies a 200mA charge current. > That would suggest that 14-16 hours should give a full charge without too > much overcurrent. > > However, while charging I noticed that the KX3 draws close to 500mA, so I am > not sure. Given that normal receiver operation draws 200mA, I fail to see how > this would work with 200mA charge current - numbers don't add up. > > I looked at the schematics. There is a low-drop voltage regulator (U2, > LT1965) that seems to be used as current source. The regulator can be > controlled via pin6 (shutdown pin). The voltage regulator supplies 2 > resistors R8 and R9 (12E each). The 3.3V output voltage over the resulting 6E > resistance suggests a current source of roughly 500mA, which is closer to my > measurements. There is an additional 20E resistor R10 which is switched using > Q1 which would drive the current up to 710mA. > > However, even being "low voltage drop" the regulator would need 3.3V input > voltage and likely a little more, say 4V. Batteries on their way charging > have a voltage of 10.5V, which means that this circuit alone needs 14.5V > input voltage to function, but the charger is specified . So the current > source can't give full current because the input voltage is too low to > function. > > Also, the charge time isn't 14 hours, but selectable 4, 8, 12, 16 hours. I > don't see how that would work - people doing 2850mAh cells, as reporting on > the reflector, won't be able to get a full charge even after 16 hours, not > with the 200mA specified in the manual. And what are the 4 and 8 hour charge > settings for? > > I guess the figures really don't add up and I don't understand how this is > supposed to work. Can someone enlighten me? > > 73, > > Geert Jan > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Are external tuners really needed with Chamaeleon antennas?
With the KX2 ATU, save your money and don’t get the MPAS Lite. Use the setup described on page 10 of the KX2 manual, two wires connected to a double binding post adapter on the radio. That will be lighter, cheaper, and more efficient than the Chameleon antenna. SOTAbeams has nice wire winders (I like the “midi” size) and high-visibility antenna wire. https://www.sotabeams.co.uk/antenna-accessories-and-hardware/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 22, 2021, at 8:24 AM, Jeff Grillo wrote: > > I am considering purchasing a Chamaeleon MPAS Lite and from what I gather > from advertisements they require an external wide range antenna tuner to > work. I have a kx2 with the internal tuner. I am guessing there is something > beyond my paygrade as to why this would not be sufficient? If anyone has > direct experience with these antennas please let me know your experience and > what you think. Also… I am interested in this particular antenna because I am > visually impaired and it seems like something I could set up myself > relatively easily. Thanks! 73 KO4NE > > Sent from my iPhone > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] best grounding technique
Personally, I would re-read the appropriate chapter in the ARRL Grounding and Bonding book. That explains the goal of bonding equipment and gives best practices. This book will be the best $23 you spend on grounding and bonding. I’ve already read it twice, but there is no way to remember the whole thing, so I always refer back to it. https://www.arrl.org/shop/Grounding-and-Bonding-for-the-Radio-Amateur wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 19, 2021, at 2:06 PM, Robert G Strickland via Elecraft > wrote: > > It seems that there are two ways of running grounding wires in the shack: FAN > - from a common ground point, individual grounding wires are run to each > piece of equipment; LINKING - a ground wire is run from each piece of > equipment to the next and eventually ending in a common ground point. What's > the group wisdom on the relative merits of these two approaches to running > grounds in the shack? > ...robert > -- > Robert G Strickland, PhD ABPH - KE2WY > rc...@verizon.net.usa > Syracuse, New York, USA > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Mic headset for K3
The Koss SB-45 has an electret mic. I found it really uncomfortable, though. Here is my blog post about that. https://observer.wunderwood.org/2021/01/27/koss-sb-45-vs-yamaha-cm500/ Electret and condenser are prtty much the same thing, though “condenser” is mainly used for large, expensive studio mics. Maybe you are thinking about electret vs dynamic. If you want a light weight, inexpensive headset, try the Koss CS100. The Amazon page says “dynamic element”, but they may be talking about the ear elements. Both the Koss page and the detail section on Amazon say the mic is an electret. https://www.amazon.com/Koss-Communications-Headset-Microphone-CS100-USB/dp/B5ML7Q https://www.koss.com/headphones/headsets-and-gaming/cs100 wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 22, 2021, at 7:01 AM, Hank Garretson wrote: > > I like theYamaha CM500. Unfortunately I'm now on my fourth set. They are > too fragile for me. Either headphones or mic fails. > > I plug CM500 mic into K3 rear MIC jack with BIAS selected and it works. I > plug CM500 into my computer sound-card MIC jack and it works. > > I'm looking for CM500 alternative. I've seen various Koss models. > > But I'm confused about electret versus condenser and which is which and > which does what. > > Specs for the Koss models are ambiguous and in various places contradict > themselves. > > My question: What Koss model or some other brand can I plug and play into > both my K3 mic jack (with Bias on) and into my computer mic jack? > > I'm a mic duffus. Help please. > > 73, > > Hank, W6SX > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Can I rent a K4?
Seriously, this was my first thought. Set up a rig rental business that isn’t limited to Elecraft. There is no reason that this has to be an Elecraft operation. A larger business might balance sales profit vs rental profit and self-insure (think car leasing), but that isn’t necessary. This would be like Hertz or Avis. Buy the rigs, rent them. Sell the used ones. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 3, 2021, at 11:39 AM, Edward R Cole wrote: > > So one of you multi-millionaires might buy a dozen K4 and set up a rental > business. Hmm? > > Rent at month minimum period for 10% of value and have clause to recover any > damage. > > They rent cars that way. Of course they require the renter to have > full-coverage insurance. > > So there is another business opportunity, selling insurance on ham radios. > > Yes, of course, I am joking > > 73, Ed - KL7UW > http://www.kl7uw.com > Dubus-NA Business mail: > dubus...@gmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Efficiency of MFJ remotely-tuned loop antennas
MFJ sells the butterfly capacitors they use. You can see them here.
https://mfjenterprises.com/products/mfj-19
https://mfjenterprises.com/products/mfj-23
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
> On Jan 18, 2021, at 8:54 PM, Alan Bloom wrote:
>
> > There is a reason why top quality variable capacitors often use welded
> > plates.
>
> I believe they do weld the capacitor plates and also weld the loop to the
> capacitor. (I don't have one, but that's what I've read.)
>
> > Yours is a limited theoretical analysis ... not a practical one.
>
> A number of reviews I have read (including the QST review of August 1994)
> have reported comparable performance to full-sized wire antennas located on
> the same site. If the loop is down by, say, 3 dB, that's only half an S
> unit, which would hardly be noticeable in the QSB of a typical amateur band.
>
>
> As I see it, the advantages of the MFJ-1786 10-30 MHz loop are:
>
> - Continuous coverage on 6 amateur bands. A convenient way to cover all the
> WARC bands.
> - Small and light.
> - Omni-directional (when mounted horizontally) so does not need a rotor.
> - No control cable required - control voltage is fed through the coax.
> - Narrow bandwidth provides excellent RF selectivity. Might be good on Field
> Day to reduce inter-station QRM.
> - Users have reported lower receiver noise compared to wire antennas. No
> doubt that is because the isolated pickup loop prevents feedline
> radiation/pickup.
>
> And the disadvantages:
>
> - Expensive ($500 list price)
> - Less gain than a simple dipole (although you would theoretically need 6 of
> them).
> - Fiddly to tune. If you QSY too far you have to re-tune.
> - MFJ quality control leaves something to be desired. (You may have to open
> it up when you get it and make minor repairs.)
> - You have to pay attention to the problem of entry of water and/or bugs into
> the housing.
> - The controller can be damaged by a DC short in the coax e.g. from an
> shorting-type antenna switch. (I don't understand why MFJ didn't include a
> fuse or some other way to protect the controller.)
>
> I probably wouldn't buy the 7-21 MHz MFJ-1788 because of the poor efficiency
> at 7 MHz. I think you'd have a better signal just using the coax as a random
> end-fed wire (with a tuner).
>
> Alan N1AL
>
>
> On 1/18/2021 8:17 PM, David Gilbert wrote:
>>
>> You are neglecting the losses in various connections in the system ...
>> including possibly the construction of the capacitor itself. I don't believe
>> that they are insignificant. There is a reason why top quality variable
>> capacitors often use welded plates.
>>
>> I would also guess that contact resistance is worse for dissimilar
>> materials, such as a copper wire to an aluminum tube.
>>
>> Yours is a limited theoretical analysis ... not a practical one.
>>
>> Dave AB7E
>>
>>
>>
>> On 1/18/2021 5:38 PM, Alan Bloom wrote:
>>> Well let's see...
>>>
>>> Radiation resistance of a small loop is 31,171 * (Area / wavelength^2)^2
>>>
>>> For a loop with a 91cm diameter at 14 MHz, I believe that comes out to
>>> 0.064 ohms.
>>>
>>> Assuming the loss is due to the RF resistance of the loop:
>>>
>>> From the internet I get the volume resistivity and skin depth for 6063
>>> aluminum is 0.03 microohms-meter and 23.3 micrometers respectively, so the
>>> surface resistivity is 0.03/23.3 = 0.0013 ohms per square. The outside
>>> circumference of the tubing is PI * 1.05" = 3.3" and the loop length is PI
>>> * 36" = 113" so the loss resistance is .0013 * 113/3.3 = 0.045 ohms.
>>>
>>> So I calculate an efficiency of 0.064 / (0.064 + 0.045) = 59%
>>>
>>> So worse than AEA claimed, but in the ballpark.
>>>
>>> Alan N1AL
>>>
>>>
>>>
>>>
>>> On 1/18/2021 3:39 PM, Wayne Burdick wrote:
>>>> Hi Alan,
>>>>
>>>> 72% sounds a bit high. Is this number based on loop size alone ("in
>>>> theory")? Or are they taking conductor geometry and other losses into
>>>> account?
>>>>
>>>> Wayne
>>>> N6KR
>>>>
>>>>
>>>>> On Jan 18, 2021, at 2:05 PM, Alan Bloom wrote:
>>>>>
>>>>> MFJ makes a pair of small, remotely-tuned loop antennas, the MFJ-1786
>>>>> that covers 10-30 MHz and the MFJ-1788 that covers 7 to 21+ MHz. As far
>
Re: [Elecraft] Head Phones
The Sony is fine for listening to music, so it should be fine for speech or CW. I tried my Yamaha CM500s for music after my Grado SR-60 headphones finally died, and the Yamaha phones were unlistenable. I went back to Apple ear buds until I got new Grados. OK for speech, but not good enough for music. The Sony MDR-V6 has fairly flat response, the MDR-7506 has an upper midrange (presence) boost. Get the one that is on sale. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 13, 2021, at 2:02 PM, Jim Brown wrote: > > On 1/13/2021 1:38 PM, Clark Macaulay wrote: >> I've used Sony MDR-7506 and heartily recommend it. > > Yes, very nice. BUT -- Yamaha CM500, which includes a mic and which I also > like a lot, is quite comfortable and about 2/3 the cost. The Sony is > considerably more ruggedly built; I own three pairs and I've never had a > failure. I've had un-repairble broken wiring in two CM500s. > > 73, Jim K9YC > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 audio output question
My KX3 only has a Phones output and that won’t drive speakers well, so I use an off-the-shelf headphone splitter and a cheap audio amp that runs off 12 V. The details are here. https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/ <https://observer.wunderwood.org/2017/03/04/speakers-for-my-elecraft-kx3/> It looks like that particular audio amp isn’t available now, but there are plenty of similar cheap ones on Amazon. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 3, 2021, at 10:26 AM, Don Wilhelm wrote: > > Chuck, > > Yes, you can do that by soldering a jumper across the switch at the rear of > the headphone jack. > If you prefer not to add the jumper, plug stereo computer speakers into the > headphone jack and plug your headphones into the headphone jack on the > speaker. > Try different computer speakers, some mute the speakers when headphones are > plugged in, others do not. > > 73, > Don W3FPR > > On 1/3/2021 12:58 PM, Chuck Chandler wrote: >> I've recently begun volunteering aboard the museum ship USS Slater, where >> they have a K2 in Radio Central. I've looked through the manual, but might >> have overlooked this. >> Is there a way to have both headphones and external speaker active at the >> same time? I'm thinking of being able to have audio for visitors while >> still using headphones to copy. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Oscilloscope recs
Yeah, those are the scopes where HP had to design new coax connectors because existing ones were limiting the bandwidth of the scopes. And that was back in the 1980s. For a while, I was working on the same floor as the HP Labs team making those ADCs, but the earthquake sent us to different buildings. Ken Poulton has some nice papers on how those actually work: http://poulton.net/papers.html wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 17, 2020, at 4:04 PM, John Marvin wrote: > > Well, if budget permits, I would recommend the Keysight DSAZ594A. This would > be especially useful on some of the higher amateur radio bands. > > 73, > John AC0ZG > > On 12/9/2020 7:31 AM, inventor61 wrote: >> I would be remiss, as a Keysight employee, to not mention the option of >> going with something like the Keysight model EDUX1052A (available from >> numerous vendors such as Mouser) or, if the budget permits and one wants to >> do things like sweep filters, have an integrated bench signal generator, >> serial data protocol analyser, etc., the DSOX1204G (which I have). >> >> Keysight is the test equipment company formerly known by many as >> Hewlett-Packard, today headquartered in Santa Rosa, CA. >> >> Steve KZ1X >> Celebrating 21 years of daily Elecraft reflector use today >> Owner / Builder of K2 #771, >> The World's Most Experienced Elecraft >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to jm...@themarvins.org > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??
I think you just proved my point. The KAT3A does not have a lower power rating for larger SWRs. That would indicate that it can handle the rated power over the entire rated SWR range. If extreme SWR at full power would exceed the component ratings, the specs would say that. This is the entire set of specs for the KAT3A: • Maximum impedance match: 10:1 SWR • Maximum power handling: 110 watts https://elecraft.com/collections/kat3a_model/products/kat3a-100w-atu I just curious why people would think that Elecraft publishes specs that their equipment does not meet. That is a pretty strong accusation. No, I didn’t check out TLW, but I have a solid understanding of transmission lines and conjugate matches, even though I only got a B- in my fields and waves class at Rice. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 12, 2020, at 11:12 PM, David Gilbert wrote: > > > Seriously?? Why do you think that Elecraft's tuners (like just about every > other one) have max power ratings that differ depending upon the SWR? For > example, for the KAT500 has a max power rating of 1000 watts into a 3:1 SWR > but only a 600 watt rating into a 10:1 SWR??? It can match both SWRs, but > not handle the same power at both. > > Did you bother to check out TLW like I suggested? > > Dave AB7E > > > > On 12/12/2020 8:59 PM, Walter Underwood wrote: >> Of course there are high voltages or currents in some tuning solutions. Why >> do people think the Elecraft ATU would not be designed to handle those? >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> >>> On Dec 12, 2020, at 7:36 PM, David Gilbert wrote: >>> >>> >>> A matched conditon does NOT prevent the components of the tuner from seeing >>> high voltages and/or high currents. Check out TLW ... the transmission >>> line application that comes free with the ARRL Antenna Book. Pick a load >>> that gives a high SWR and then click on the "Tuner" button for the >>> application to draw one of four different tuner configurations for you. >>> The app will tell you what the voltages across each component are, and also >>> the power loss (i.e., heating effects) in each one. >>> >>> 73, >>> Dave AB7E >>> >>> >>> >>> >>> On 12/12/2020 8:18 PM, Walter Underwood wrote: >>>> Tuning happens at low power, so transients are small. After it is matched, >>>> why would the K3 ATU not be rated for full power over the full SWR range? >>>> >>>> Other components might fail, of course. Amphenol UHF connectors are only >>>> rated for 500 V. >>>> >>>> wunder >>>> K6WRU >>>> Walter Underwood >>>> CM87wj >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to wun...@wunderwood.org >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to ab7e...@gmail.com > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??
Of course there are high voltages or currents in some tuning solutions. Why do people think the Elecraft ATU would not be designed to handle those? wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 12, 2020, at 7:36 PM, David Gilbert wrote: > > > A matched conditon does NOT prevent the components of the tuner from seeing > high voltages and/or high currents. Check out TLW ... the transmission line > application that comes free with the ARRL Antenna Book. Pick a load that > gives a high SWR and then click on the "Tuner" button for the application to > draw one of four different tuner configurations for you. The app will tell > you what the voltages across each component are, and also the power loss > (i.e., heating effects) in each one. > > 73, > Dave AB7E > > > > > On 12/12/2020 8:18 PM, Walter Underwood wrote: >> Tuning happens at low power, so transients are small. After it is matched, >> why would the K3 ATU not be rated for full power over the full SWR range? >> >> Other components might fail, of course. Amphenol UHF connectors are only >> rated for 500 V. >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??
Tuning happens at low power, so transients are small. After it is matched, why would the K3 ATU not be rated for full power over the full SWR range? Other components might fail, of course. Amphenol UHF connectors are only rated for 500 V. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 12, 2020, at 5:04 PM, Mister Mike wrote: > > That is pretty much what I thought. I will have to read the fine manual and > see how the automatic tuner works. Picked up this K3 in a swap deal a while > back but I am still pretty much stuck ( happily) in the Collins KWM-2/S-Line > “Stone Age” so I need time and patience (lots) to figure how to use these > marvelous appliance radios. > > In any event I have a MAC-200 made by SGC who make pretty darn good tuners > which I can use but that is another box to take along if I do a road trop. > > 73 to all > > Michael, W1RC > >> On Dec 12, 2020, at 6:37 PM, donov...@erols.com wrote: > >> Hi Mike, >> >> Its not wise to use the K3 antenna tuner to tune a random wire. >> A truly random wire can easily produce VSWR greater than 10:1 >> which is likely to damage the K3 tuner when running at full >> K3 output power. >> >> Its much wiser to use an external tuner with a random wire >> >> 73 >> Frank >> W3LPL >> >> >> >> -Original Message- >> From: elecraft-boun...@mailman.qth.net On >> Behalf Of Mister Mike >> Sent: Saturday, December 12, 2020 9:42 AM >> To: elecraft@mailman.qth.net >> Subject: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal >> Tuner?? >> >> What is the best way to do this? I am not familiar with automatic tuners. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Tuning Random-Length Wire Antenna with K3 Internal Tuner??
A random-length wire is usually chosen to avoid a half-wavelength on the frequencies you’ll be using. A more accurate term is non-resonant end-fed antenna. Avoiding half-wavelengths means the impedance will not be 5000 Ω or greater, but it will be pretty high. Or low. The SWR on the feed line will be large and a high impedance feed point is pretty sensitive to surrounding objects (capacitance). So: 1. Keep the coax short and low loss. 2. At the antenna, connect some sort of counterpoise or RF ground to the shield of the coax. This can be a ground rod, a radial system, or a wire laying on the ground. If you don’t do that, the RF ground will be the coax and everything connected to it, including your K3. 3. After that, tell the ATU to tune it and wait for it to find a solution. 4. If it won’t match, change something. Maybe the length of the wire, maybe the position, maybe the counterpoise. If this is a long-term setup, a common mode choke near the rig is a good idea. Even with a counterpoise, some of that RF energy is going to be on the shield. For field deployments with the KX3, I run with no feed line at all. The antenna wire and counterpoise wire are connected directly to the KX3 with a double binding post adapter. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 12, 2020, at 9:41 AM, Mister Mike wrote: > > What is the best way to do this? I am not familiar with automatic tuners. > > TIA, > > Michael, W1RC > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Firmware development
> "I can't think of one open source, community-based product that I'd want to > hang my hat on, even if I do see some that I'd support. I just don't see the > professional depth in the general community.” OpenSSL pretty much runs the entire secure Internet. Linux, Python, etc. But those are exceptions. Many seemingly-useful open source projects just can’t be supported properly. There aren’t enough volunteer hours. They end up half-designed, half-implemented, orphaned when the developer moved on, or stranded without a needed redesign. This report is a good dive into that. https://www.fordfoundation.org/work/learning/research-reports/roads-and-bridges-the-unseen-labor-behind-our-digital-infrastructure/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Firmware development
It would be nice to see the two remaining “not implemented” features appear in the KX3, especially S-meter absolute mode. I’m not sure there is much demand for addressing multiple transverters. https://ftp.elecraft.com/KX3/Manuals%20Downloads/E740163E%20KX3%20Owner%27s%20Manual%20Errata%20C5-3.pdf I know of some other small open requests for the KX3, but these two are features. I don’t expect to see larger new features. For example, it would be great to see synchronous AM detection, and I have no doubt that the DSP is capable of that, but I’m not holding my breath. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 25, 2020, at 2:04 AM, David Wilcox via Elecraft > wrote: > > I would venture to say that most hams (especially those recently licensed) > don’t and can’t utilize all the features of even an older K3, let alone one > with all the enhancements. The K4 is so far beyond the “average” ham in its > ability that unless you are an electronics guru with an EE you won’t need, > much less understand, all the neat things it can do. > > I am not disparaging the K3, K3S, or the K4 but whatever version you might > have or want it will do the job 95% of the time. I love my upgraded K3s but > still haven’t scratched the surface of what it will do. I could spend the > rest of my life exploring all the features of my fine radio (I have all of > Fred Cady’s books) but there are other avenues of enjoyment in ham radio that > I am pursuing. This IS a hobby and it has been my go to in times of good and > bad since 1960. Cheaper than a psychiatrist and less trouble than a > mistress. > > What I have said above may not apply to the top of the list contester as that > is a field all to itself. Those guys and gals may notice the difference in > some of the enhancements to the K line in a pileup, but that’s another rabbit > hole. > > Dave K8WPE since 1960. > > David J. Wilcox’s iPad > >> On Nov 24, 2020, at 11:03 PM, Bill Frantz wrote: >> >> While I agree with Skip here, my agreement is based on practicality, not >> physical ability. The internal K3 hardware design is quite modular, and >> replacing the DSP boards for the main and sub receivers should be straight >> forward. We have seen how the K3 can be improved by replacing boards. >> Upgrading the DSP is just another kind of new board. >> >> BUT, designing, coding, and manufacture engineering these boards is a big >> project. The boards will be quite expensive. How many people are likely to >> upgrade? And, we already have the K4, built to remain competitive in the >> market. The K4 is probably a better radio than the mythical upgraded K3. The >> upgrades to the K3 are also likely to cost more than a K4. All these >> considerations make this project a non-starter. As I said, practical >> considerations. >> >> 73 Bill AE6JV >> >>> On 11/24/20 at 6:03 PM, k6...@foothill.net (Fred Jensen) wrote: >>> >>> There's an inescapable rule in electronic product development: Once you >>> commit to a physical design in year , it will be a design that uses the >>> parts of year forever. I think about 2006 or so for the K3 [mine >>> is S/N 642 and that's about when I bought it]. Yes, the firmware can be >>> upgraded over time, but only within the constraints of 2006 components >>> [like memory and CPU]. There is also the fact that eventually, you will >>> run out of bells, whistles, and horns for updates. The K3 hit that point >>> some time back. Elecraft had fixed all or nearly all of the bugs, they'd >>> supported all of the add-on accessories, and I'm fairly sure the MCU is >>> approaching it's limits. >> >> --- >> Bill Frantz| Security is like Government | Periwinkle >> (408)348-7900 | services. The market doesn't | 150 Rivermead Rd #235 >> www.pwpconsult.com | want to pay for them.| Peterborough, NH 03458 >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to djwilco...@yahoo.com > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.
Re: [Elecraft] New KX2 - what am I doing wrong?
For the AM broadcast band, this is normal. Here is a 2016 post from Wayne, N6KR about using the KX2 for SWL. The reduced sensitivity is to reduce intermod in the PIN diodes used for T/R switching, if I remember correctly. Also, the KX3 and KX2 are designed to be used with the preamp for normal operation. = By the way, sensitivity of the KX2 is excellent for SWL segments between the ham bands. The sensitivity does fall off pretty rapidly below about 3 MHz because the KX2 was designed for 80-10 m and doesn't have filters specifically for 3 MHz or lower. You can still tune down to as low as 500 kHz, but you'll only be able to copy very strong signals below the 160 meter band. 73, Wayne N6KR On Jun 13, 2016, at 8:56 PM, "Wayne Burdick n...@elecraft.com <mailto:n...@elecraft.com> [KX3]" mailto:kx3-nore...@yahoogroups.com>> wrote: > Guy, > > The KX2 does very well with AM signals. Just use LSB or USB mode and tune for > best reception. This will occur when the pitch of the carrier is at zero, but > as long as you get reasonably close it'll be very readable. > > Since you can use either LSB or USB, you can try both to see which rejects > adjacent-channel QRM better. Just use the ALT MD (alternate mode) menu entry > to switch between the normal and opposite SSB mode on the current band. > (Remember to switch back to ALT MD = NOR for ham-segment use.) > > You might even want to experiment with turning on the KX2's auto notch. This > will notch out the carrier of the AM signal. In SSB mode, the APF-AN > switch-hold function turns auto notch on/off. > > 73, > Wayne > N6KR = wunder wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 23, 2020, at 11:55 AM, Philip Cochran wrote: > > I recently purchased a new KX2 with all the trimmings (AX1, AXE1, CW > paddles, binding posts, etc.). Unfortunately, I’m hearing nothing but > static. I had expected the KX2 to significantly exceed the receiving > quality of my inexpensive SWL receivers. > > > I am within 5 miles line of sight from some powerful AM stations. My > Midland emergency radio has no problem in picking up the local AM stations > - even the telescoping antenna fully retracted into the body of the radio. My > KX2 cannot hear these stations. I cannot hear WWV on the KX2 (although my > $20 clock radios can synchronize to it). I cannot hear any FT8 signals. > Likewise, no CW. > > > Granted, I am only using the Elecraft AX1 whip and not an outdoor antenna. > But > the AX1 whip is considerably larger than the telescoping antenna on my > Midland even when extended. I’ve checked the RF GAIN (it’s at -0 db), the > AF GAIN knob is turned up, and PRE is showing near the middle of the > display. > > > Maybe I am a complete idiot and am doing something wrong. Or perhaps my > brand new KX2 was dead on arrival. Can anyone suggest next steps? > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CM-500
The official product page is also wrong, either through ignorance or spell-check. It describes it as "a sensitive electric microphone”. https://usa.yamaha.com/products/music_production/accessories/cm500/features.html#product-tabs <https://usa.yamaha.com/products/music_production/accessories/cm500/features.html#product-tabs> I think we can all agree that a) it has an electret mic, and b) the official product descriptions are a mess. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 8, 2020, at 1:27 AM, Jim Brown wrote: > > On 11/7/2020 2:42 PM, Bill Frantz wrote: >> The packaging said (in part), "Dynamic Microphone for Active Musicians" > > The sales/marketing department, usually ignorant of what they're selling, > wrote that drivel you're reading, which is intended simply to sell more of > whatever they're selling. > > The CM500 has had an ELECTRET mic as far back as 2008, when W6XU, another > audio professional, arranged a group purchase for your Bay Area contesting > club. It DOES need Bias, which most modern rigs provide on one pin of their > mic connector. Simply adding a resistor of suitable value (in the range of > 5-10KOhms) between that pin and the mic input pin, provides bias suitable for > most electret mics. > > 73, Jim K9YC > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CM-500
Holding them together was not a problem for me. The problem was when they were apart, trying to get the replacement ear cushion onto the driver without ever putting stress on the teeny wires connected to the driver. Clamps don’t really help with that. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 3, 2020, at 2:54 PM, Don Wilhelm wrote: > > As any woodworker knows, that is what clamps are for - they provide that > extra hand often needed. > Also, the woodworker's mantra is "you can never have too many clamps" - I > have often found that is true. > > There are large and quite small clamps. > > 73, > Don W3FPR > > On 11/3/2020 4:55 PM, Paul Ferguson wrote: >> I found it rather difficult to install replacement ear pads on the >> CM-500. It seemed I did not have enough hands to hold all the parts >> together when trying to align things and reinstall the 3 screws. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [OT] Broken boom mic attachment on a CM-500
Replacement ear pads are available, but the internal wiring is very fragile. I managed to get the replacements on, but broke a wire. After three breaks and four re-solderings, there wasn’t enough wire left to work with, so I bought a new headset. The Koss UR-20 is the same headphones as the Yamaha CM-500 and Koss SB-40, but without a boom mic. The link to these replacements was posted in this email reflector almost exactly a year ago (11/1/19) by Josh W6XU. These are the ones I ordered. https://www.koss.com/accessories/cushions/ur20-ear-cushion <https://www.koss.com/accessories/cushions/ur20-ear-cushion> This video walks you through the replacement steps. https://www.youtube.com/watch?v=Gz-atFziEz4 <https://www.youtube.com/watch?v=Gz-atFziEz4> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 2, 2020, at 1:50 PM, Alan - G4GNX wrote: > > My CM500 certainly has an electret insert and it came with a separate plug-in > battery bias pack. > > Unfortunately the ear pads are starting to deteriorate. Have you had to > replace yours? If so, with what? ISTR I read somewhere that new separate pads > are not available. > > 73, > > Alan. G4GNX > > > -- Original Message -- > From: "Jim Brown" > To: elecraft@mailman.qth.net > Sent: 02/11/2020 02:59:17 > Subject: Re: [Elecraft] [OT] Broken boom mic attachment on a CM-500 > >> Hmmm. I've used nothing but a CM500 since about 2008, and I've never seen >> one with a dynamic mic. The data sheet for all of them has said it was >> dynamic, but none of then were. >> >> 73, Jim K9YC > >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [OT] Broken boom mic attachment on a CM-500
The Koss SB-40 apears to be the same headset as the Yamaha CM-500 but with a dynamic mic. The mic plug on my first CM-500 said “KOSS”, so I’m pretty sure the only difference is the microphone. I’ve heard complaints about the dynamic mic on the SB-40. https://www.amazon.com/Koss-SB40-Computer-Headset-Microphone/dp/B5ML7T <https://www.amazon.com/Koss-SB40-Computer-Headset-Microphone/dp/B5ML7T> The CM-500 does not need an adaptr to be used with the KX3. Turn off the mic button menu setting and plug it in. If you want to get fancy, a regular stereo-to-mono splitter will separate the logic bias from the mic bias for a cleaner, higher-level mic signal. https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/ <https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 1, 2020, at 6:05 PM, JP Douglas wrote: > > From my experience, some of the CM-500s have an electret mic and others a > dynamic mic. I don’t know if its an age factor. > I use mine with my YAESU FT-897 and with my Kenwood TS-480, don’t have the > adapter at this point to use with the KX3...Pretty good for an in-expensive > boom mic. > 73 de Jose Douglas KB1TCD > > Sent from my iPad > >> On Nov 1, 2020, at 8:40 PM, Walter Underwood wrote: >> >> I tried a Koss SB-45 headset and hated it. It gets good reviews from hams >> and has >> an electret mic, but it was not comfortable at all. It sat on top of my ears >> instead of >> around my ears, plus it grabbed my head more tightly than the Yamaha CM-500. >> Finally, the mic boom was not as easy to position. >> >> I sent it back and ordered a new Yamaha CM-500. I haven’t noticed any major >> differences between the new one and my eight year old one (wires broke on >> that one). >> The mic boom pivot is stiffer on the new one, but that could easily be a >> normal >> manufacturing variation. >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> >>> On Nov 1, 2020, at 2:12 PM, Bill Frantz wrote: >>> >>> The boom mic on my CM-500 is now flopping around held only by the signal >>> wire. >>> >>> Any ideas about how to reattach it? >>> >>> What are the best replacement headsets these days. Someone said that the >>> CM-500 has changed for the worse in the last few years. >>> >>> Any other advice? >>> >>> 73 Bill AE6JV >>> >>> --- >>> Bill Frantz| Security is like Government | Periwinkle >>> (408)348-7900 | services. The market doesn't | 150 Rivermead Rd #235 >>> www.pwpconsult.com | want to pay for them.| Peterborough, NH 03458 >>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to wun...@wunderwood.org >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to kb1...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [OT] Broken boom mic attachment on a CM-500
I tried a Koss SB-45 headset and hated it. It gets good reviews from hams and has an electret mic, but it was not comfortable at all. It sat on top of my ears instead of around my ears, plus it grabbed my head more tightly than the Yamaha CM-500. Finally, the mic boom was not as easy to position. I sent it back and ordered a new Yamaha CM-500. I haven’t noticed any major differences between the new one and my eight year old one (wires broke on that one). The mic boom pivot is stiffer on the new one, but that could easily be a normal manufacturing variation. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 1, 2020, at 2:12 PM, Bill Frantz wrote: > > The boom mic on my CM-500 is now flopping around held only by the signal wire. > > Any ideas about how to reattach it? > > What are the best replacement headsets these days. Someone said that the > CM-500 has changed for the worse in the last few years. > > Any other advice? > > 73 Bill AE6JV > > --- > Bill Frantz| Security is like Government | Periwinkle > (408)348-7900 | services. The market doesn't | 150 Rivermead Rd #235 > www.pwpconsult.com | want to pay for them.| Peterborough, NH 03458 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [OT] Fires
The Creek Fire was burning through forests that were 80-90% bark beetle kill in mountain wilderness. It is simply not possible to “thin” that. From 2014 to 2018, the number of dead trees in California increased from 11 million to 147 million. Anyone who thinks there is a simple solution needs to think some more. If you want to help, I already know of five Scout camps with major damage, one in our council, near Big Basin. They will all need donations to rebuild. wunder K6WRU Walter Underwood Radio Scouting Chair, Pacific Skyline Council CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 14, 2020, at 8:39 PM, Mike Short wrote: > > Years of mismanagement contribute to the fires. Forest Service and states > have not culled dead trees, allow logging, and not done controlled burns to > reduce the fuel. Building homes in canyons with Santa Ana winds also does > not help. Until there is a serious change in how forests are managed, this > will be a normal occurrence > > On Wed, Oct 14, 2020 at 22:06 David Gilbert wrote: > >> >> I think you have a skewed view of the situation, probably understandably >> so given your own vulnerability to that fire. I can find tons of media >> information specifically on the Bobcat Fire with almost daily datelines >> when I do a Google search, and I know from personal experience with >> wildfires here in southern Arizona that agencies have to prioritize >> literally on an hour by hour basis how and where they deploy scarce >> resources. Slurry bombers are about the only effective countermeasures >> in rough terrain (and even then only partially), since sending fire >> crews into those areas is pure and simple murder. >> >> Here where I live (dry grass, dry trees, hilly terrain) the aircraft >> (slurry bombers, helicopter water drops) try to slow the fires while the >> fire crews mostly just dig in their heels and try to save the homes ... >> and there isn't much point in them doing so until the homes are actually >> threatened. The fire that whipped through this area in 2011 burned >> EVERYTHING within about 50 feet of my home, but the fire crews wouldn't >> back off and they saved the house. If you can find the Google Earth >> satellite pictures from July 2011 you can see what I mean (my .kml info >> is available from QRZ.com page) ... everything is black except for a >> cone where my house is at the pointed end of the cone. >> >> With 4 million acres on fire in California within a short period of time >> I think it's unrealistic of you to think that there will ever be enough >> resources in reserve to cover everything in a situation like that ... at >> least not when you would like. >> >> Dave AB7E >> >> >> >> >> On 10/14/2020 1:52 PM, Al Lorona wrote: >>> So I read not only K6XX's report, but the entire issue of the Jug. >> http://nccc.cc/jug/2020/09sep2020.pdf . I am completely floored by the >> complete destruction of Bob's place. Bob, I don't know if you're a >> believer, but I for one am praying for strength for you, my friend. >>> >>> My impression of the Bobcat fire here in Los Angeles, which got to >> within 2 miles from me and is still burning 38 days later, is similar to >> Bob's: fire agencies simply let it burn for days without any urgency >> whatsoever, letting it advance into backyards in the northernmost reaches >> of Arcadia and Monrovia before kicking into firefighting high gear at the >> last possible second. In strangely similar fashion, the news media never >> really reported with any energy on the Bobcat fire. I still can't >> understand the almost total ignoring of this fire for so long. So I >> resonated with Bob on this point, and for this reason I refute W6GJB's >> claim that resources assigned to southern California deprived northern >> California of the same. It seems that *nobody* had the resources they >> needed. What a shame. >>> >>> Hang in there, Bob. Please let us know if you've started a gofundme page >> or something like that. >>> >>> Al W6LX >>> >>> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to ai4ns.m...@gmail.com > __ > Elecraft mailing list > Home: http://
Re: [Elecraft] [K3] Issue with HI CUR on 12m
“Balun” is also misleading because “balanced” transmission line is a misleading idea. Whether the transmission line is coax or two-wire, it can carry both differential mode and common mode currents. I prefer the words “choke” and “transformer”. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 14, 2020, at 10:14 AM, Alan - G4GNX wrote: > > Jim. I agree about the MISS-use of the word balun. As the word is actually > supposed to represent a balanced to unbalanced TRANSFORMER, I have used it in > its correct sense. > > If I had meant common mode choke, I would have said so. > > If the OP is not using a balun in the true sense of the word, then he should > say so. > > Sorry, but I can't be held responsible for others' misuse of the terms. > > I don't see why the word "balun" should be eliminated. That's like saying the > word "resistor" should be eliminated because I actually mean to describe a > capacitor, but can't be bothered to learn the correct terminology. :-) > > 73, > > Alan. G4GNX > > -- Original Message -- > From: "Jim Brown" > To: elecraft@mailman.qth.net > Sent: 14/10/2020 17:57:31 > Subject: Re: [Elecraft] [K3] Issue with HI CUR on 12m > >> On 10/14/2020 6:19 AM, Alan - G4GNX wrote: >>> I presume that you disconnected the feeder from the balun when you did the >>> DC Ohms test? If not, there is something wrong because you should see >>> almost a dead (DC) short through the primary of the balun. >> >> Here's an example of where the word "balun" blows up our thinking about >> problem solving. The "balun" you're describing is a transformer, sometimes >> called a voltage balun. Other things commonly called a "balun" are a common >> mode choke, which should look like an open circuit at both DC and RF. >> >> The word "balun" should be eliminated from our use. I know of at least ten >> very different things that are called a "balun." >> >> 73, Jim K9YC >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] ARRL Lab reports suggestion
> On Oct 8, 2020, at 8:07 PM, Jim Brown wrote: > > Also see my detailed analysis of ARRL Lab tests of a selected number of rigs. > The raw data for my report came straight from ARRL Labs in electronic form. > Also see ARRL Lab plots of keying bandwidth and phase noise for Scott's radio. Every time I see one of those plots from the ARRL Lab, I wonder “what is a good number?” I really wish they would add some additional lines to the graph. One suggestion: * FCC regulated limits (where they exist) * 90th percentile (best 10%) of tests in the previous five years * Best test in the previous five years I think those would be a nice contribution towards the "Continuation and extension of the amateur's proven ability to contribute to the advancement of the radio art”, to quote Part 97. I guess I should be telling this to QST and the ARRL Lab, not this list, but does this sound like a good idea to others? Maybe Elecraft can publish these for the K4 to get the ball rolling. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] New boxes and packing for Elecraft equipment
In my case, I would need to disassemble my KX3 and put it all back in the individual kit subboxes. I never had a box that holds an assembled KX3. Same thing for the PX3 and KXPA100. :-) wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 9, 2020, at 7:44 AM, Frank Krozel wrote: > > Curious if the original shipping boxes seems to work when the radio is sent > out, why re-invent the box? > > -73- FrankKG9H > kg9hfr...@gmail.com > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: W vs K broadcast station callsigns
This is actually answered in the linked document. Not a big surprise for a document tiled “kwtrivia”. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Oct 6, 2020, at 10:36 AM, Don Wilhelm wrote: > > So how did KDKA in Pittsburgh, Pa become a Western callsign? > > 73, > Don W3FPR > > On 10/6/2020 1:04 PM, a...@elecraft.com wrote: >> More than you ever wanted to know about the convention of giving "W" >> callsigns to broadcast stations east of the Mississippi and "K" callsigns to >> the west: >> https://earlyradiohistory.us/kwtrivia.htm >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donw...@embarqmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] 630 meter operation on the K4
Looking at the published specs… Frequency Range: 100 kHz - 54 MHz (VHF/UHF range to be determined*) https://elecraft.com/products/k4-transceiver <https://elecraft.com/products/k4-transceiver> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Sep 14, 2020, at 8:10 AM, Nigel Lemaire wrote: > > Wondering what capabilities the K4 will have on this (these) bands... > > 73 > Nigel > Wa6MSE > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] With the K4 coming, is it time to replace this email list with a forum?
In the late 1980s, I was managing forums for about 5000 Hewlett-Packard engineers. A modern merged forum/email system (like groups.io <http://groups.io/>) is excellent, but if I had to choose, I’d choose email every time. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Sep 6, 2020, at 7:06 PM, Barry wrote: > > My point is there's no need to hit a DELETE key in a forum with a list of > subject titles that one may choose to read, or not. Email lists are 1980s > technology. > Barry W2UP > > Nr4c wrote >> Hmmm... “DELETE” is your friend. >> >> Sent from my iPhone >> ...nr4c. bill >> >> >>> On Sep 6, 2020, at 6:05 PM, Barry > >> w2up@ > >> wrote: >>> >>> David Gilbert-2 wrote >>>> And as others have pointed out, there is already a K4 forum on .io . >>>> why doesn't that work for you?? >>>> >>>> Dave AB7E >>> >>> Because I'm not looking for a K4 forum. I'm looking to AVOID all the K4 >>> traffic that will be comping. >>> >>> Barry W2UP >>> >>> >>> >>> -- >>> Sent from: http://elecraft.365791.n2.nabble.com/ >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto: > >> Elecraft@.qth > >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to > >> nr4c@ > >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto: > >> Elecraft@.qth > >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to > >> lists+1215531472858-365791@.nabble > > > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Inverted L for 160 meters
ON4UN's Low Band DXing book is on sale for $20 right now. Get that and you’ll know as much as anybody about radials. https://www.arrl.org/shop/ON4UN-s-Low-Band-DXing <https://www.arrl.org/shop/ON4UN-s-Low-Band-DXing> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Aug 25, 2020, at 8:14 PM, David Gilbert wrote: > > > If you are going to go with buried radials, I don't think 4 or 5 of them is > going to do a very good job for you. > > Like N7WS recommended, look up N6LF's work and read it carefully. Seriously. > > 73, > Dave AB7E > > > > > On 8/25/2020 5:31 PM, kevinr wrote: >> I have to be very careful of raised wires on my property. If they are not >> above the height of an elk's antlers I am in trouble. I plan to bury them. >> This is something I've never done before which has its own merit. I have >> plenty of wire scrap from broken antennas so the non-resonant, buried >> radials work better for my circumstances. I need to calculate the feed >> point impedance to see if I need to design a balun for the system to work. >> Once my main project is done I'll have more time for modeling each method. >> >>Thanks for all the ideas guys, >> >>73, Kevin. KD5ONS >> >> >> On 8/25/20 5:23 PM, Wes wrote: >>> You probably should get acquainted with Rudy Severns, N6LF. >>> (https://www.antennasbyn6lf.com/) He has written more than you ever want >>> to know about vertical antennas, >>> >>> More specifically to your case, are you planning the radials to be >>> elevated? If so, they need to be the same length, in fact some effort >>> should be made to get all of the currents the same. The last thing you want >>> is a fifty ohm feedpoint impedance with a shortened vertical (which is what >>> an L is). There is evidence that elevated radials are an improvement over >>> on-the-ground or buried radials. Mine are on the ground, mainly because 1) >>> I didn't want to give up radiator height to raise the radials, 2) all of >>> the big guns bury theirs and I don't have room for full length radials >>> anyway in my cactus patch. See my QRZ page for evidence. >>> >>> My modeling shows a little bit of directivity away from the horizontal >>> wire, but it's negligible. >>> >>> Wes N7WS >>> >>> On 8/25/2020 4:23 PM, kevinr wrote: >>>> From what I can find, and what I can calculate, five wires, each ~130 feet >>>> long, could make a nice inverted L for 160 meters. One leg for the >>>> vertical and horizontal portion of the antenna. Four legs for the >>>> counterpoise (ground plane). There are many broken wire antennas stored >>>> in my shed which are fodder for the radials. Do all of the legs for the >>>> counterpoise need to be 1/4 wavelength or can I substitute some shorter >>>> lengths? The feedpoint should somewhere above 50 ohms impedance. As I >>>> add more radials that number will reach 50 ohms asymptotically. >>>> >>>> I can get the vertical part up to 70 or 80 feet above ground with the rest >>>> of it horizontal. Most of the radiation should take place from the >>>> vertical part since it is closer to the feed point. But there should be >>>> some effect from the direction of the horizontal portion. How strongly >>>> does the direction of the horizontal portion effect the radiation pattern >>>> of the antenna system? My property allows me to point it from 300 degrees >>>> around to 200 degrees so I have plenty of options. Between 200 and 300 >>>> degrees there is a road used by loggers, and the folks maintaining the >>>> towers at the top of this mountain. They can break any antenna lower than >>>> 80 feet above ground. Spar poles and cranes clear out any dead limbs >>>> across the road. >>>> >>>> Inquiring minds... >>>> >>>> Kevin. KD5ONS >>>> >>>> __ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:Elecraft@mailman.qth.net >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> Message delivered to wes_n...@triconet.org >>> >>&g
Re: [Elecraft] Audio settings
A few years ago, I collected all the TX EQ recommendations from this list and chose the majority opinion (also the one most based on facts about the human voice). I collected that in this blog post. The title says “KX3”, but the recommendations came from K3 users. https://observer.wunderwood.org/2015/09/09/transmit-audio-and-compression-with-the-elecraft-kx3/ <https://observer.wunderwood.org/2015/09/09/transmit-audio-and-compression-with-the-elecraft-kx3/> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Aug 9, 2020, at 5:13 AM, K4PX K4PX wrote: > > I acquired a Heil Proset with HC-5 element to use with my K3. What TX > audio settings can you recommend for this set? Thanks! > Joe > K4PX > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] what tripod to use?
Not quite sure about “any” photo tripod. I once borrowed a Gitzo Series 5 that we dubbed the “tree-pod”. This one extends to nine feet. Ain’t cheap, of course. :-) https://www.gitzo.com/us-en/tripod-systematic-series-5-giant-6-sections-gt5563gsus/ <https://www.gitzo.com/us-en/tripod-systematic-series-5-giant-6-sections-gt5563gsus/> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jul 30, 2020, at 7:15 PM, brianchapn...@rogers.com wrote: > > The Buddipole Tripod with mast is quite substantial and will get your antenna > up higher than any photographic tripod. In windy situations you will want to > guy it or at least put a weight at the base. > > I've done this a few times with the AX1. > > For a quick mount the Buddipole bracket with the adapter is a perfect fit for > the AX1 and may work for your Comet. > > Brian VE3GMZ > > > > > Sent via BlackBerry Hub+ Inbox for Android > > > Original Message > > > From: fra...@pwpconsult.com > Sent: July 30, 2020 8:37 p.m. > To: wd8oep2...@sbcglobal.net > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] what tripod to use? > > > Welcome to the list Harry > > Given that your antenna isn't an Elecraft product, you are kind > of on your own. Does Comet have a tripod adapter? Elecraft has a > tripod adapter for its portable antenna, the AX1. > <https://elecraft.com/products/axt1_axt1-tripod-adapter> Will > that adapter work for your use? > > If that adapter won't work, you can build an adapter. The > standard tripod thread is 1/4" x 20. You should be able to get > some nuts of that size and glue them to the necessary bracket to > attach the adapter to your antenna. Or you can get a drill and > tap and tap it yourself. There are many other choices and ways > to proceed. > > As to the tripod, a lot depends on what you intend to do. If you > are doing SOTA activations, you probably want a very light > weight tripod for backpacking. If you can stand something > heavier, there are photographic tripods in a bewildering array > of models. > > I will also note that photographic light stands also have 1/4" x > 20 threads and can be used as well. They aren't as useful on > uneven ground as a tripod, but they go up higher. > > These things are available at a wide range of prices. Amazon and > eBay are likely to have cheap choices. > > 73 Bill AE6JV > > On 7/30/20 at 6:04 PM, wd8oep2...@sbcglobal.net (Harry Brown) wrote: > >> I'm new here. >> >> I have a kx3, and I have the Comet hfj350M telescopic antenna, which works >> from 80 down to 6 meters. >> >> I need to put it on a tripod, and then I can get the tripod adapter from >> Elecraft. >> >> Can someone, please tell me which tripod to get? >> >> If possible, I'd like it to be heavy enough to withstand high >> winds, because we have those kind of winds on the east coast of Michigan. > --- > Bill Frantz| When an old person dies, a | Periwinkle > (408)348-7900 | library burns. - Joe McGawon | 150 > Rivermead Rd #235 > www.pwpconsult.com | Irish Ethnographer | > Peterborough, NH 03458 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to brianchapn...@rogers.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Reliable PL-259 UHF connector engagement
I’m sure those are excellently manufactured, but the teeth are a poor design. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jul 29, 2020, at 11:32 AM, Jim Brown wrote: > > On 7/29/2020 11:21 AM, Walter Underwood wrote: >> That is exactly why I consider UHF connectors to be a poor design. > > There's nothing wrong with REAL UHF connectors, like Amphenol 83-1SP, and > surplus adapters stamped with MIL spec numbers. It's the cheap junk > connectors that cause the problems. My definition of a junk connector (in > North America) is one that doesn't carry an Amphenol part number or MIL-spec > number. > > 73, Jim K9YC > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Reliable PL-259 UHF connector engagement
> On Jul 29, 2020, at 9:49 AM, donov...@erols.com wrote: > > Unlike N and BNC connectors, a PL-259 is dependent on proper > engagement of its outer shell and interconnecting teeth to the mating > SO-239 socket. That is exactly why I consider UHF connectors to be a poor design. I use connectors which are designed to connect without special effort. Seriously, that is the main point of a connector, to connect. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Waterproof SO-239 covers
I screw it down, wiggle it, back it off, wiggle it, push it down, screw it down, repeat, then switch to Type N connectors (which don’t need any of that nonsense). wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jul 16, 2020, at 2:45 PM, Don Wilhelm wrote: > > One problem is that "finger-tight" is not the same for all hams. > The other is the use of off-brand connectors that do not fit well. > The other is that some connectors do not engage the protruding 'tabs' on the > PL-259 do not seat properly with the indentations on the SO-239. Those are > the ones for which "finger-tight" is not good enough. > > I agree that 1/4 turn is too much - if you can turn it that much, it was not > properly mated, remove and start again. Just a slight touch of the pliers > will make it certain the connector is tight. > > 73, > Don W3FPR > > On 7/16/2020 5:25 PM, Gmail - George wrote: >> Years ago in a land far-far away all video coax connectors in Broadcast >> Television were UHF (PL259). >> We only tightened them hand (finger) tight. In may places pliers would have >> not fit any way. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 in the IARU Contest Last weekend
There is some sort of popular folk theorem that open wire feed line doesn’t carry common mode currents. It is obviously wrong. Both wires high, both wires low, and that is common mode. Any RF that excites both dipole elements high against ground will cause common mode currents on the feed line. “Balance” does not fix that. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jul 16, 2020, at 1:14 AM, Victor Rosenthal 4X6GP > wrote: > > Re open-wire fed antennas: > > If the antenna is well-balanced and fed via a true balanced antenna tuner > (preferably link-coupled) then there shouldn't be a problem with common mode > currents. > > Yes, you have to worry about nearby objects unbalancing the antenna, which is > less of a problem with a choked coax-fed dipole. But being able to use a very > simple single antenna from (for example) 7 to 28 mHz. with relatively good > efficiency is advantageous. > > My experiments with baluns seem to indicate that just using a current balun > to go from an unbalanced transmitter or tuner to a balanced line works poorly > unless you cancel out the reactance with a balanced network on the antenna > side of the balun. All these tuners with "balanced" outputs provided by a > balun (often a voltage balun) do not work well at all. > > My best result with balanced lines has been with the Johnson Matchbox. It's a > shame that there doesn't seem to be an equivalent available today (and it > wouldn't be easy to procure the parts to build one). > > 73, > Victor, 4X6GP > Rehovot, Israel > Formerly K2VCO > CWops no. 5 > http://www.qsl.net/k2vco/ > On 16/07/2020 6:26, Jim Brown wrote: >> On 7/15/2020 1:36 PM, CUTTER DAVID wrote: >>> It's all about size. Bigger core helps, >> Dave, >> No, it is NOT about size. It is about design of the entire antenna system, >> including the antenna, the feedline, and other parts needed to make the >> SYSTEM work. The principal characteristic of a common mode choke is the >> resistive component of its common mode impedance at the operating >> frequency(ies) where it will be used. Further, dissipation in the choke >> occurs at least as much in the WIRE that is wound around the core as in the >> core itself. >> There is another fundamental error in many antenna systems that ONLY looks >> at matching to the transmitter at the transmitter, ignoring the match >> between the antenna and the transmission line, using high impedance, >> parallel wire line, and using a random center-fed or off-center fed >> horizontal wire on all bands. Yes, the transmitter can be made to supply >> power to the feedline, yes, it will get to the antenna, and yes, it will >> radiate. But it may not receive all that well due to common mode current on >> the line from noise sources in our own homes and those of our neighbors. >> THAT is the problem with using a decades-old design for a world where there >> was 20 dB less noise than most of us face today. >> so a core that is OK for ssb >>> and cw might be undersized for AM or some data modes. Just like linear >>> amplifiers. >> So it is NOT the size of the core, it's the design of the antenna system. >> HFTA author and retired ARRL Antenna Book and Handbook editor Dean Straw, >> N6BV, published an excellent piece in QST 6-8 years ago called "Don't Blow >> Up Your Balun," in which he pointed out the differential mode dissipation in >> chokes, which can be extremely high if the choke is at a very high current >> point in a mismatched line. When he passed it to me for review, I noted that >> these losses were in addition to the common mode dissipation, and he revised >> the piece to reflect that. >> you can't >>> label something poorly designed because it doesn't pass the BOK test. >> BOK? >> 73, Jim K9YC > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 power out
You should not need an ATU with a dummy load. Put the ATU in bypass. Did you send dits or a constant carrier? I recommend using RTTY or FM to get a constant carrier. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jul 11, 2020, at 12:42 PM, Frank O'Donnell wrote: > > Always something else I remember just after hitting send. > > The KX3 is running off the Pro Audio Engineering PAE-Kx33 power supply, > plugged into the 9-15 vdc connector. > > On 7/11/20 12:40 PM, Frank O'Donnell wrote: >> After a fair time of non-use, today I got out my KX3 and started working >> through configuration checklists. Among other things I thought I'd check the >> power out. >> >> For this test I used a Bird 43 and MFJ-260C dummy load. For HF I used a Bird >> 2-30 MHz 25w element, and for 2m a 100-250 MHz 10w element. I put the KX3 in >> CW mode and keyed with the KXPD3 paddle. When changing to each HF band I hit >> the ATU Tune button. >> >> On 40m and 20m I found that with the Pwr knob set to 15w, the Bird showed >> about 8w out. With the Pwr knob set to 5w, the power out is about 3w. >> >> After changing the antenna port and Bird element, on 2m with the radio set >> to 3w the Bird shows about 2.5w out. >> >> Any thoughts on these results, or suggestions on other things to check? >> >> Thanks and 73, >> >> Frank K6FOD >> >> >> >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Difference in dummy loads
> On Jul 2, 2020, at 3:42 AM, NW0M wrote: > > Don't over-think this one. For 98% of us hams the MFJ dummy loads will work > fine. > > The MFJ-260C is rated at 300 watts and sells for $50. Looking at the rating curve in the manual, that is 300 W for 30 seconds or 100 W for 90 seconds. For $50, I’d still go with the Oak Hills Research kit. That handles 100 W continuous, no time limit. http://www.ohr.com/rfl100.htm wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Difference in dummy loads
An air-cooled dry dummy load is just fine for 100 W. I like the Oak Hills Research RFL-100 kit. $50 and easy to build. It uses twenty 5 W resistors. http://www.ohr.com/rfl100.htm I wrote up my build of that kit here. https://observer.wunderwood.org/2016/12/31/building-a-dummy-load/ If you want to buy instead of build, I’d look at one of the used Bird dummy loads listed here. There are other sites, but this one seems to have a good selection. https://www.nm3e.com/loadSampler.htm#LoadSampler wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jul 1, 2020, at 2:44 PM, NJMike wrote: > > I need to purchase a dummy load for use with my K2/100. What's the > difference between a dry dummy load and an air cooled dummy load? Which is > better? > > Thanks, > Mike NJ2OM > > > > -- > Sent from: http://elecraft.365791.n2.nabble.com/ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX2 Drift During Field Day
That was my thought, too. Dang, that is excellent frequency stability! The spec is "+/- 1 ppm typical at 25 C after 5-minute warm-up." wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 29, 2020, at 5:20 PM, Jay Rutherford wrote: > > ONE Hertz?? > > 73 > Jay K3BH > > On Mon, Jun 29, 2020, at 18:35, Ian Kahn, NV4C wrote: >> All, >> >> I have KX2 s/n 2862. I noticed while operating Field Day that, about >> every 15 minutes, it would drift down 1 Hz. Has anyone else ever seen >> this in their KX2? I will admit it is possible this was just the effect >> of RF getting back into the rig, but at 10W, I'm not really sure where >> enough would come from to cause an issue. >> >> Thanks and 73, >> >> Ian, NV4C >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] URL???
I use Apple Mail as a client and Fastmail as my server and see all my posts. I also don’t have Google reading my email and sending the results to advertisers. Amazon has had to remove the order details from their “your order has shipped” emails because too many free email providers were scraping the data and selling it. I’m very happy paying for Fastmail. https://www.fastmail.com/pricing/ <https://www.fastmail.com/pricing/> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 26, 2020, at 11:30 PM, Don Wilhelm wrote: > > That is a "feature" of gmail - it is not standard for the reflector. > I guess gmail thinks that if you sent it, you do not want to see your post. > > I see all my posts to the reflector (non gmail address). > > 73, > Don W3FPR > > On 6/26/2020 11:22 PM, David Herring wrote: >> I can be corrected if I’m wrong, but my understanding (and personal >> experience) is that the reflector does not send a copy of an email back to >> the sender. At least it’s never done it for me. I usually see my messages >> when someone responds to it and its included in their response. >> As far as the link you sent, it came through 5-9. I checked it out earlier. >> ;-) > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Low tone audio Tx
To get pictures of that recommendation, see this blog post. I collected a dozen sets of transmit equalization settings from this list and K9YC’s settings were representative of the consensus. The process for the KX3 uses the digital voice recorder and A/B comparison by ear. In the KX3, the DVR is after equalization and compression in the transmit audio chain. Someone with detailed knowledge of the K3 would have to say whether that also works for that rig. https://observer.wunderwood.org/2015/09/09/transmit-audio-and-compression-with-the-elecraft-kx3/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 18, 2020, at 10:25 PM, Jim Brown wrote: > > On 6/18/2020 8:30 PM, oz6...@qsl.net wrote: >> How do I get my K3 Tx audio to have more “punch”. > > Set TXEQ as follows: Three lowest bands max cut (-18 dB), fourth band -6 dB, > two highest bands +3 dB. Turn COMP all the way down, then set Mic Gain per > the manual. NOW, turn up COMP, set the display meter to read Comp, and while > to talk like you would on the air, increase COMP until you see about 10 dB of > COMP on the meter on voice peaks. > > Now get some signal reports from "good" listeners. Tell them to listen with > their widest IF filter setting. Tell them you DON'T want "warmth" or > "fullness," you want a signal that will cut through QRM an noise, but still > sound pleasant. Depending on your mic and your voice, you may want to use > more or less cut of the 4th band, and a little more boost of the top two. > Don't go higher than 6 dB. > > 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Future of KPA500 & KAT500
On Jun 17, 2020, at 12:27 PM, Bert wrote: > > Maybe it's time to change the law! > > The rest of the world is suffering because of an outdated law in the US! > > Bert VE3NR Elecraft is free to sell export versions of their amps without that limit, so the rest of the world is just fine. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Field Day and clean radios
UV could be rough on the plastic. I strongly agree with the suggestion to use nitrile gloves. That also puts the responsibility onto the guest operator instead of onto the person who tried to sanitize the radio. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 16, 2020, at 4:27 PM, W2xj wrote: > > handheld UV sanitizer. > > Sent from my iPad > >> On Jun 16, 2020, at 7:03 PM, AB1DD wrote: >> >> Hi All, >> >> Question on cleaning a K3, specifically during Field Day. We need to clean >> the K3 before a change of operators. What is safe, IE not take off the >> button labels? Alcohol? We will take the rubber ring off the tuning nob. >> >> What's good? >> >> -- >> >> 73, >> Carl >> AB1DD >> >> Resistance is futile. >> (don't know about reactance, though) >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to w...@w2xj.net > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Best Audio Interfaces 2020?
This list was last updated in 2018. http://www.telepostinc.com/soundcards.html wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 15, 2020, at 4:55 PM, Wes wrote: > > OK QSL. > > All of my computers have soundcards including the, soon to be replaced, shack > Lenovo laptop. I tried a TASCAM US-100, highly recommended by K9YC, without > seeing any improvement over the Lenovo on digital modes. > > Wes N7WS > > On 6/15/2020 2:59 PM, Eric wrote: >> Hi Wes, >> >> Thank you (and everybody) for the replies. >> >> I am using the computer’s sound card for receive audio right now on my old >> computer, but my new laptop doesn’t have a mic jack, so I need to go to some >> kind of external device to get the audio from the radio to the computer. >> >> 73 de Eric, KG6MZS >> >>> On Jun 15, 2020, at 2:31 PM, Wes wrote: >>> >>> What's the matter with the internal soundcard in your computer? >>> >>> Wes N7WS >>> >>> On 6/15/2020 9:30 AM, Eric KG6MZS wrote: >>>> Hello All, >>>> >>>> I just scanned the archives for recommendations on a good external USB >>>> audio interface for sound card digital. In 2017 Jim (K9YC) recommended two >>>> (ASUS and Newmark) that are no longer available. >>>> >>>> What are the current favs that are out there now? >>>> >>>> TIA, >>>> Eric >>>> KG6MZS >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to k...@hollywoodtitle.com > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] NJQRP Skeeter Hunt 2020
Let me Google that for you. NJQRP Skeeter Hunt <https://www.google.com/search?client=safari=en=NJQRP+Skeeter+Hunt=UTF-8=UTF-8> Yes, the announcement was totally mysterious with no links to helpful information. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 15, 2020, at 7:46 AM, John Boedeker via Elecraft > wrote: > > Ok ok you have my attention now. What the heck? You lost my on the first > Skeeter Hunt reference. What is Skeeter Hunting? I’m a poor lost soul. > Just getting back into ham radio. The other day I was fortunate enough to > part with my hard earned cash and order a spanking brand new KX3/PX3 shack in > a pack loaded to the max. Haven’t got it yet.. I’m ready to rock and roll > then comes along Skeeter Hunting. Well, can you educate this old fart? > What is Skeeter Hunting? >> On Jun 15, 2020, at 5:39 AM, Larry Makoski wrote: >> >> Skeeter Hunters! >> >> The Ninth Annual NJQRP Skeeter Hunt is set for Sunday, August 16th. >> >> A word about Skeeter Hunt numbers as I'm already receiving e-mail requests. >> Tradition is that Skeeter Hunt numbers are issued as of the First Day of >> Summer - which this year is NEXT Saturday, June. ONLY e-mail requests sent >> as of 12:01 AM Saturday EDTwill be honored. >> >> "Why/ What difference does it make?" you may well ask yourself. The answer >> is simple - it gives eveyone interested an equal opportunity to acquire a >> lower number. To some that's no big deal, but to others it's a very big >> deal - so everyone gets the same chance. And it also adds another level of >> participation that keeps YOU in the game, so to speak. >> >> Why new numbers every year and not the same one year after year like other >> contests? Because not everyone can participate each year - family >> commitments or vacations or other things come up that prevent people from >> participating. >> >> So folks, start pouring in those e-mails to w2lj...@gmail.com AFTER >> Midnight when this coming Friday turns into Saturday, here in NJ. And as >> always, please, please, PLEASE include your call sign, your name (that you >> will use when operating) and the State or Province that you will be >> operating from. >> >> Hope to hear from you all real soon! >> >> Larry W2LJ >> >> NJQRP Skeeter Hunt Contest Manager >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to johnboede...@mac.com > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] zero-beating a KX1
If getting to exactly the sidetone frequency works, an instrument tuner box (or app) might do the job. I don’t know enough to recommend one, but I see some devices for $30 or less and some apps ranging from free to a few dollars. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 9, 2020, at 2:29 PM, Don Wilhelm wrote: > > Tom Hammond N0SS's (SK) website is mostly intact thanks to the Mid Missouri > Amateur Radio Club. It is a valuable resource. > > You can find the files for the K1 and KX1 CW Tuning Indicator (SMD version) > at http://www.mmccs.com/mmarc/n0ss/index_k1.html. > > If you have capability to etch your own boards, Tom recorded full size > images. You might also try emailing Fred at FAR Circuits to see if he can > create the boards. I believe Tom may have used him as his board supplier. > > 73, > Don W3FPR > > On 6/8/2020 7:33 PM, Frederick Dwight wrote: >> If you do a google search on KX1 zero beat indicator or cw zero beat >> indicator you will see several circuits demonstrated. Some like the one >> which uses the LM567 (non SMT) part and had >> a white LED seemed to be good, much less than 100 Hz BW and had the >> schematic, but some others seemed to be much too broad, perhaps hundreds of >> Hz wide. My circuit >> needed quite a bit of audio drive, so rigged up a small 500-500 CT audio >> transformer and used the primary as a autotransformer to double the audio >> voltage >> to the circuit which did not change the earphone volume but enabled the >> detector to operate without opening up the audio gain too much on any of my >> rigs. >> Good Luck Rick KL7CW >> Sent from Mail for Windows 10 >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to donw...@embarqmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Self-fusing liquid electrical tape
Cad-weld seems a easier than the other approach described. It is more robust against corrosion, plus it is fun. I just don’t see a downside. :-) wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 5, 2020, at 10:32 AM, Phil Kane wrote: > > On 6/5/2020 9:05 AM, Grant Youngman wrote: > >> Cad-weld isn’t expensive — $11-15 per weld depending on where you buy >> the stuff. Typically sold in kits of 6 one-shot crucibles, and >> available for varying ground wire sizes on 1/2” or 5/8” ground rods. > > Agreed, but how many of us would go through that exercise? > > 73 de K2ASP - Phil Kane > Elecraft K2/100 s/n 5402 > > From a Clearing in the Silicon Forest > Beaverton (Washington County) Oregon > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] FIXED--was NOT the feedline
I use the weatherproofing described here. I think this practice has a long history in telephone wiring. It is a detailed walk-through of what you described. https://static.dxengineering.com/pdf/WeatherProofingCoax-TechTip.pdf <https://static.dxengineering.com/pdf/WeatherProofingCoax-TechTip.pdf> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 3, 2020, at 9:58 AM, Clay Autery wrote: > > I've got to get to class, but there are a NUMBER of different methods and > procedures that are used. > > Self-fusing tape properly applied covered by top-quality electrical tape to > protect the self-fusing tape from UV... > There are specific points on installation that you want to observe. > > Someone will chime in with deatil or a reference to a procedure... If not, I > will do it later... Class in 3 minutes. > > 73, > > __ > Clay Autery, KY5G > (318) 518-1389 > > On 06/03/20 10:35, Peter Dougherty wrote: >> No, and I wasn't sure how to accomplish this. It's stainless hardware, but >> I'm guessing I should probably wrap the feedpoint up in self-annealing tape >> and Scotch 88 just to be safe. >> >> - pjd >> >> -Original Message- >> From: elecraft-boun...@mailman.qth.net On >> Behalf Of Dave Cole >> Sent: Wednesday, June 3, 2020 7:27 AM >> To: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] FIXED--was NOT the feedline >> >> Hi, >> >> Is the open end of that feedline where it connects to the antenna >> weatherproofed? >> >> 73, and thanks, >> Dave (NK7Z) >> https://www.nk7z.net >> ARRL Volunteer Examiner >> ARRL Technical Specialist >> ARRL Asst. Director, NW Division, Technical Resources >> >> On 6/2/20 8:15 PM, Peter Dougherty wrote: >>> HI all, >>> >>> A postscript to the problem. First off, a huge thank you to the many >> replies received. I was fortunate that the problem was not in the KPA-1500 >> as I'd originally feared. >>> Much troubleshooting within the past few days. Originally the amp was >> "iffy" on the old M-squared 6m5, and problematic (faulting) during damp or >> wet weather. This prompted the replacement of both the antenna and feedline. >>> The hard faults were still occurring, until it was suggested the Ten-Tec >> 238 tuner that I was using exclusively for the built-in antenna switch was >> now the issue. I took this out of line today, and lowered the tower to >> fine-tune the LFA's feed point and now everything is humming along just >> nicely. The KPA-1500 is happy at 1.5 kW and showing an SWR of 1.2 in dry >> conditions. I will keep my fingers crossed that the wet weather expected in >> the next day or so won't bother it all that much. >>> The final step was to move the 6m feedline from the secondary inlet box to >> the main antenna switch on the big tower. The downside here is I now have an >> additional 70 feet of BuryFlex in the line, so I'm guessing a total of about >> 1.5 to 1.7dB of feedline loss. This is something I would like to address in >> the future with an eye to dropping it below 1dB. >>> Screencaps: >>> https://www.dropbox.com/s/1y4vyd17pbgq8ty/6m%20via%20the%20antenna%20s >>> witch.png?dl=0 >>> >>> And >>> >>> https://www.dropbox.com/s/5x8n0bum4nwcxqp/6m%20LFA%20-%20SWR%20after%2 >>> 0tuning.png?dl=0 >>> >>> And for the balun discussion, this is what's in place, before the >>> double-walled heat-shrink was applied: >>> https://www.dropbox.com/s/18pgthl67rtq3bl/2020-05-31%2017.51.08.jpg?dl >>> =0 >>> >>> - pjd >>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net Please help support this email >>> list: http://www.qsl.net/donate.html Message delivered to >>> d...@nk7z.net >>> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html Message >> delivered to li...@w2irt.net >> >> _
Re: [Elecraft] NOT the feedline
Even with a 1:1 SWR, 1000 W is pretty close to the 500 V peak rating for a UHF connector. Type N connectors are rated at 1500 V peak. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jun 1, 2020, at 3:17 PM, George Kidder wrote: > > One of my antennas is a commercial "G5RV" fed with 33' of 450 ohm ladder > line, terminated in a PL-259 pair, with coax from there to the shack. > Apparently this combination results in very high RF voltage at the PL-259, > and it arcs over at 1000 W (not from an Elecraft amp!). This combo goes wild > when I attempt high power on 80M, although it is stable at 100 W. Just > another thing to watch out for! > > 73 - George, W3HBM > > On 6/1/2020 5:59 PM, Ted Edwards W3TB wrote: >> [This message came from an external source. If suspicious, report to >> ab...@ilstu.edu<mailto:ab...@ilstu.edu>] >> >> I am following this with great interest. >> Like Alan G0GNX, I also use an OCF, RG-8X out to the current balun in this >> case, 300 ohm to the antenna. K3, KPA-500 and KAT-500. >> >> If I am running stations in a contest on 40m and also 80m CW, It "appears" >> that my VSWR rises after a half hour and then the KAT-500 starts to try to >> spontaneously retune. Doesn't happen on 20m and up. This past weekend in >> CQ WPX, I reduced drive so that output was about 300 watts and it all >> became tame. >> >> I had thought that it was a heating of the RG-8X; then I changed my mind to >> the current balun from Radiowavz that is rated for 1.5 KW. I think it is >> the balun just getting hot out there. I had used a W2AU 4:1 balun with my >> OCF, which is a voltage balun but I didn't know about that -- for upwards >> of 40 years and with the Elecraft equipment for about 4 years since I got >> the amp/tuner. I just switched to a current balun last year with one that >> I bought at Dayton. >> >> I would have expected more problem with the voltage balun than with the >> current balun. I could change back to the W2AU if needed. >> >> Interesting stuff, so I am reading along. And my thanks to all of you. >> >> On Mon, Jun 1, 2020 at 4:42 PM Fred Jensen wrote: >> >>> Nearly same experience Bob: Sloping V, 135 ft legs, from top of 80 ft >>> tower fed with homemade 600 ohm open wire using a DX Engineering 4:1 >>> "balun" [a strange, usually misunderstood piece of electronic apparatus >>> often used for the wrong reasons] rated at 10 KW. It warmed up >>> noticeably at 1.2 KW RTTY use. It helps to remember that one can >>> saturate a ferrite core [especially when very hot] which creates a >>> racket reminiscent of a non-synchronous spark gap TX. >>> >>> 73, >>> Fred ["Skip"] K6DGW >>> Sparks NV DM09dn >>> Washoe County >>> >>> On 6/1/2020 1:48 PM, Bob McGraw K4TAX wrote: >>>> Based on my experience, balun power ratings are for MATCHED >>>> conditions. It is rare that hams use a balun in a matched condition. >>>>Thus a 1:1 balun should see 50 ohms on the input and 50 ohms on the >>>> output, while a 4:1 balun should see 200 ohms on the output and 50 >>>> ohms on the input. In the case of a resonant folded dipole, a 4:1 >>>> balun is typically operating in a nearly matched condition. All others >>>> combinations are unknown and random. >>>> >>>> I run about 500 watts on all bands. My baluns are rated at 5KW! It >>>> takes 3 or 4 big hunkin' pieces of ferrite to attain this power >>>> level. My 6 meter balun is a 1/2 wavelength electrically of RG-213. >>>> No ferrite! >>>> >>>> Buy or build a balun of your choice. Using an IR temperature gun, >>>> measure the ambient temperature of the core. Run about 1/2 rated >>>> power carrier for 30 to 60 seconds. Measure the temperature again. >>>> If it is warm to hot, this is RF producing heat. And likely >>>> continuing will produce core failure. This is not a good balun for >>>> your application. >>>> >>>> One of my baluns work between the output of my KAT500 and the balanced >>>> feed line connected to the center of a 256 ft wire. That antenna >>>> works 160M - 6M with zero issues. Now, I do run a hybrid balun being >>>> a 4:1 Guanella balun as a transformer, and it is fed with a 1:1 balun >>>> for common mode rejection. >>>> >>>> Most single core, i.e. 2 or 3 cores stacked with 2 to
Re: [Elecraft] Field Day
Don’t guess, look it up. Q. What equipment at our Field Day site must be operated off of the emergency power in order to claim the 100-point per transmitter bonus? A. You must operate all transmitting and receiving equipment from emergency power. If you use a computer for digital modes, and/or to control or operate the radio, it also must use emergency power. If the computer is used only for logging and is not keying the transmitter, it does not need to be emergency powered. http://www.arrl.org/files/file/Field-Day/2019/2019-FD-FAQ-RevA.pdf\ <http://www.arrl.org/files/file/Field-Day/2019/2019-FD-FAQ-RevA.pdf%5C> Also, batteries may be charged from commercial power, just not during Field Day operation. It does make sense to get a simple charger if you are going to buy a big battery. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 24, 2020, at 2:07 PM, Nr4c wrote: > > Jim > > My club had used this idea for as long as I’ve been doing FD with them. If > the computer controls the TX, it must be on emergency power. If it only logs, > then commercial power is ok. But if you press F4 to send your call, computer > should be on the battery too. > > Sent from my iPhone > ...nr4c. bill > > >> On May 24, 2020, at 4:48 PM, Jim Brown wrote: >> >> On 5/24/2020 1:16 PM, Jack Brindle via Elecraft wrote: >>> Two things - if the computer controls the radio (and it should for logging >>> and sending exchanges), then it must also be run on emergency power. >> >> Are you sure about that, Jack? I've seen exactly the opposite statement (not >> directly from ARRL, but by someone quoting ARRL). >> >>> Second, the addition of a wall charger for the batteries puts you firmly >>> into class D. You can charge the batteries off solar panels to remove this >>> restriction. >> >> Right. >> >> 73, Jim K9YC >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to n...@widomaker.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Field Day
This was a nice blog post with a link to a deep cycle marine battery. Not the same as an AGM battery, but maybe a starting point. https://www.amateurradio.com/how-much-does-emergency-power-cost/ <https://www.amateurradio.com/how-much-does-emergency-power-cost/> wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 24, 2020, at 12:14 PM, David Lear wrote: > > Now my club is nixing a close community effort I'm going to operate FD as > 2E running K3/P3 at 100W. Neighbor AF4B operating across the road from me > with his K3. Vertical antenna on my front lawn and me operating from my > garage. Maybe for 12 hours, if I can make it. Any suggestions for a > good quality AGM battery(s). Limit to $250. > > 73, Dave Lear NE5DL > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] ferrites for subwoofer: before or after isolation transformers?
I know you already ran the cables, but twisted pair would probably help. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 23, 2020, at 9:37 AM, Nicklas Johnson wrote: > > The backstory as briefly as I can make it: I wanted to place my home > theater subwoofer in the corner of our living room; doing so required > running two speaker wires and a coaxial cable under the house and plugging > the subwoofer into a different outlet than the AV receiver; this in turn > resulted in ground-loop hum (because of a tiny difference in potential > between the two outlets) which I worked around with a set of 1:1 > low-frequency audio isolation transformers. The subwoofer is of a type > that produces a signal based not only on the LFE channel, but also on the > left and right speaker channels, thus the two speaker wires along with the > coaxial cable. > > Now the subwoofer is picking up common mode noise on 20m, which isn't > terribly surprising, as this happens a good bit with consumer-grade > electronics. I'm hoping to mitigate this with some substantial ferrite > clamps for all three connections and as many turns as I can get through > them. > > My hunch is that the best place in the path to clamp them on will be > immediately before the connection to the speaker itself, on the speaker > side of the isolation transformer, but I wanted to get the opinions of > folks who have solved this problem in the past to see if there's any reason > the ferrites should come before the isolation transformers. > > Thoughts? > > Nick > > -- > *N6OL* > Saying something doesn't make it true. Belief in something doesn't make it > real. And if you have to lie to support a position, that position is not > worth supporting. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Reset Third-Hand KX3
I’ve done that for my 2012 vintage KX3, but that resets all the calibration and alignment values, too. It does not just set the preferences to defaults. If I loaded that on my KX3, it would overwrite the custom temperature compensation values that I set with the extended temp. comp. procedure. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 22, 2020, at 8:04 PM, Lynn W. Taylor, WB6UUT > wrote: > > I wrote to supp...@elecraft.com asking for the configuration file for my 2013 > vintage KX3. > > They sent me the specific file for my radio's serial number, with the factory > calibration info. > > 73 -- Lynn > > On 5/22/20 11:25 AM, Walter Underwood wrote: >> There is no way to reset just the preferences to factory default settings. >> It would be nice and people have asked for it, but it doesn’t exist. Saving >> and restoring preference sets would be a handy thing. >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Reset Third-Hand KX3
There is no way to reset just the preferences to factory default settings. It would be nice and people have asked for it, but it doesn’t exist. Saving and restoring preference sets would be a handy thing. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 22, 2020, at 10:56 AM, Bob McGraw K4TAX wrote: > > Rule #1 - If it isn't broke, don' try to fix it. > > Rule#2 - See rule #1. > > I agree with Don, a reset will wipe everything including calibrations and > alignment parameters. While the previous owner's information, frequencies, > and etc. may not be of use to you, one can easily overwrite those values with > the utility. > > And as always, make a back-up of the radio configuration before you change > anything. Then after you make changes, make a back-up of your data. The > back-up files are each date and time stamped. That then becomes a good > starting point for future reference. > > 73 > > Bob, K4TAX > > > On 5/22/2020 12:07 PM, Don Wilhelm wrote: >> Tommy, >> >> I would not recommend doing a Reset to Factory Defaults unless there is a >> problem. >> That reset will wipe out calibration and the installed option as well as >> setting the menu items back to default information. >> >> You can always go into the menu and set each entry of interest to you to its >> default or setting of your preference. I would suggest you do not 'monkey' >> with the locked calibration settings. The menu listing in the back of the >> manual indicates the default for each menu item. The menu is not gigantic >> or deep - unlike some other radios. >> >> If you really want to do a reset, first save a configuration file using KX3 >> Utility. After the reset, you can restore the configuration. >> >> 73, >> Don W3FPR >> >> On 5/22/2020 8:05 AM, Tommy Judson via Elecraft wrote: >>> Good Morning, >>> >>> I’m in the process of purchasing a KX3 and will be the third owner. The >>> seller suggested the radio be reset but not entirely back to factory >>> defaults. >>> >>> Never having owned an Elecraft radio I have no clue how to go about doing >>> this. Would someone please point me in the right direction to learn how >>> this is done? >>> >>> Thank you, Tommy >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcg...@blomand.net > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Fwd: Establishing A New Station
Actually, tune for resonance, not 1:1 SWR. Loops tend to be 50 Ω, but that isn’t the right measurement. Luckily, tuning for maximum noise is the same as tuning for resonance. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 14, 2020, at 7:36 PM, Fred Jensen wrote: > > Small mag loops can be effective antennas if you can't put up 5 over 5 over > 5. One caveat: They are resonant transformers and the loop MUST be exactly > resonant at your QRG. This means, bypass any ATU and tune the loop [only] for > 1:1 SWR. Using the "get it close and let the ATU match it" scheme will lead > to a round, fairly pricey dummy load. > > 73, > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > On 5/14/2020 7:19 PM, Phil Kane wrote: >> On 5/13/2020 12:42 PM, brianchapn...@rogers.com wrote: >> >>> Im thinking of a loop. I've had good luck with them. Any thoughts? >> I've been using a loop on the porch of our ground level apartment. At >> 15 watts. It is useless - can't get it to tune properly and I often >> think that I would have a better signal with my dummy load at 100 watts. >> If you are getting good luck you must be doing something right. At >> east you have the advantage of 34 stories - good for you. >> >> 73 de K2ASP - Phil Kane >> Elecraft K2/100 s/n 5402 >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3/KX2 remote for FD
Field day can be both an operating event and a contest. This is not an either/or situation. The stated purpose is what ARRL says it is. The incentive to participate, the icing on the cake, is a contest that is part of the event. You can get 950 points with zero QSOs. I’m assuming that the emergency power bonus does not apply if you don’t make any contacts. If it does, then you can score 1050. The rest of the score comes from contest-style contacts plus GOTA and youth contacts. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 14, 2020, at 11:17 AM, Bob McGraw K4TAX wrote: > > From ARRL - At its core, Field Day is a local event and an opportunity for > local amateur radio clubs to showcase the skills, science and technologies > that make radio communication such a wonderful hobby and a valuable public > service. > > I see nothing about this being a contest. > > Bob, K4TAX > > > Sent from my iPhone > >> On May 14, 2020, at 1:12 PM, Jim Brown wrote: >> >> On 5/14/2020 7:56 AM, Bob McGraw K4TAX wrote: >>> However it has become a "contest" to see who and what organization can >>> accumulate the most points. A contact is a contact, a multiplier is a >>> mathematical term.It has no place in Field Day operation. >> >> My first FD was 1956. It has ALWAYS been a contest. It was my first, and it >> made me a contester! >> >> 73, Jim K9YC >> Then W8FNI >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to rmcg...@blomand.net > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Heil headset with HC-4 revisited
It might be noise on the bias. Some people have reported that. With a mono plug, you’ll get the mic bias (clean) and the logic bias (not so clean, wrong voltage) mixed together. Using a stereo plug or a stereo-to-mono splitter will give you just the mic bias. Details here: https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 14, 2020, at 11:15 AM, Bert wrote: > > The original Heil headset with the HC-4 element didn't work with the KX3. > > I have now replaced the HC-4 with an electret, which sounded > great trying it with the KX3 before installing it in the Heil headset. > The electret, by itself, was plugged in to the KX3 with a stereo plug. > > After electret installed in the headset I have quite a lot of hum. The > headset mic is connected with a mono plug to the KX3. > > Any ideas why the hum appears after mounting the electret in the headset? > > Bert VE3NR > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3/KX2 remote for FD
> On May 14, 2020, at 6:41 AM, Bob N3MNT wrote: > > We have always made the assumption that we would still be able to gather to > accomplish this. Interesting. I never make that assumption in em-comm. Having other people is handy, but each operator must be self-sufficient. Putting up the massive club station? Yeah, that needs a lot of people and won’t happen this year. Here are some photos from 2017, with seven towers, including a 40 m beam. https://www.flickr.com/photos/walter_underwood/albums/72157683147971341 wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Establishing A New Station..
Mag loops need retuned when you move a few kHz. If most of your operating is parking in a CW or digital sub-band and working that, a map loop should be great. Probably not quite as much fun for search and pounce. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 13, 2020, at 2:18 PM, Tommy Judson via Elecraft > wrote: > > My thoughts on using a loop - none whatsoever. Will have to see what that > piece of equipment might be. (Been away from HF since the mid seventies.) > > Your apt will be twice as high as my apt and maybe get twice as much wind, > mine experiences plenty. I live on a corner of a building on the peripheral > of the downtown tall building area. One 30’ glass panel wall faces south and > the other faces west with a three foot square column at the apex. Our view > is southwest looking miles up the Trinity River. > > My first thought was to put a horizontal “V” wire antenna with the ends > drooping to get the correct length for operation on 40 meters. Maybe some > sort of Loop antenna would be better, will have to think about this. Thank > you, Tommy > >> On May 13, 2020, at 2:42 PM, brianchapn...@rogers.com wrote: >> >> Your mention of apartment living perked my interest as I will be moving into >> a condo on the 34th floor in a few months. I'll have a beautiful >> unobstructed view. An antenna has been on my mind. I don't like the idea of >> dropping a wire from the balcony. The wind could cause trouble. Im thinking >> of a loop. I've had good luck with them. Any thoughts? >> >> Brian VE3GMZ > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3S Firmware Update for Mac
While you are connected, I would save a configuration. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 12, 2020, at 11:14 AM, John Stengrevics > wrote: > > David, > > Yes! Window > Default Position worked! > > I then sent all new files to the K3S. > > So, I guess I am done? > > John > WA1EAZ > >> On May 12, 2020, at 2:09 PM, David Fleming wrote: >> >> John, on the menu at the top of the screen, click Window --> Set to Default >> Position. See if that restores the window. >> >> David, W4SMT >> >> >> - >> >> On Tuesday, May 12, 2020, 02:01:19 PM EDT, John Stengrevics >> wrote: >> >> David, >> >> If I try to click on anything in the Utility pane, it immediately disappears. >> >> The lower box shows: >> >> Elecraft K3 Utility OS X Rev 1.19.9.6 >> OS X Version 10.15.4 >> K3 MCU Revision 05.60. RS - 232 Speed 38400 bps >> >> John >> WA1EAZ >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX-3 TX current draw?
What voltage? What frequency? It will pull more current at lower voltages. The power stages are less efficient at higher frequencies, especially 12m and up. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 8, 2020, at 4:19 PM, Drew Arnett wrote: > > What do you see for current draw on the KX-3? Manual says 1 to 2 A typical. > > I'm seeing 3 A at less than full power on one band. Yikes! Makes me > wonder if the repair shop is open? Elecraft website says hunkered > down and mostly work from home. > > Thanks and best regards, > > Drew > n7da > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CM500 Adapter
$35 is too much for this mic adapter. It probably reflects the small lot manufacturing cost, but you don’t need to pay that. This adapter costs $5.45 and does the same thing. https://smile.amazon.com/gp/product/B68O5H/ The KX3 mic connection is TRRS, but Ring 2 and Sleeve are both connected to ground. They are labeled mic ground and logic ground, but they are tied together inside the radio, so a TRS plug works just fine. The wiring detail is from the Fred Cady book. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 6, 2020, at 10:24 AM, Troy Davis wrote: > > https://www.ebay.com/itm/351072109250 > > — > Troy Davis > K4JDA > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CM500 headset on K3S and KX3?
> On May 6, 2020, at 10:54 AM, Jim Brown wrote: > >> Do not get the Koss SB40. That is the same headset as the Yamaha CM500, but >> with an inferior dynamic mic. > > There is nothing inherently inferior about dynamic mics, especially for > speech -- the vast majority of mics used in sound reinforcement and > broadcasting are dynamic mics. But like any technology, some products are > better than others. Of course. This particular headset has an inferior dynamic mic, according to reviews. At this price point, I’d expect electrets to be the best performers. If I was going to upgrade my headset, I’d start with headsets used by sports broadcasters and ENG teams. Is it still called “electronic news gathering”? wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CM500 headset on K3S and KX3?
My CM500’s earpads are flaking pretty badly, leaving little back bits around the home office/shack. They still work fine. I purchased them in December 2012. I see that the same order has Eneloop XX batteries and a LowePro Edit 140 case, so that was all ordered to go with my brand-new KX3. Comments on my blog post suggested the Koss SB45 as another alternative. This also has an electret mic, but somewhat different fit over the ears, and it is cheaper. https://www.amazon.com/Koss-sb45-SB-45-Communication-Stereophones/dp/B00081A2CW Do not get the Koss SB40. That is the same headset as the Yamaha CM500, but with an inferior dynamic mic. The mic connector on my Yamaha CM500 is labeled “KOSS”, for what that’s worth. I noticed that when choosing photos for my blog post. It is normal for earpads to wear out. I replaced the pads on my Grado SR225e phones after five years. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 6, 2020, at 8:25 AM, N2TK via Elecraft > wrote: > > I bought replacement ear pad cushions and earpad covers for Koss UR20, > headphones on eBay a while back for $14.24. They fit the CM500 fine. A pain > to change but worth it. > I have had very good results with CM500. They fit my head better than the > Heil's which were too tight. I would rather have a material cover which I > find more comfortable for wearing for many hours in a contest. I use a > quarter of a paper towel between the headset cushions and my ears. That works > fine. > And the CM500's are so cheap I bought a spare, just in case. > N2TK, Tony > > -Original Message- > From: elecraft-boun...@mailman.qth.net On > Behalf Of Wes > Sent: Tuesday, May 5, 2020 9:45 PM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] CM500 headset on K3S and KX3? > > The failures I have are the ear pads disintegrate. Someone said Koss pads > could work but that hasn't been my experience. I've found some '500s at > estate sales where I snap them up. Currently the law firm where my fiance is > employed is working from home and she's using a set on her computer to > "attend" on-line meetings. I guess I can add "IT Manager" to my resume, > since I'm helping her with her connections. I second the use of VOX. > > Wes N7WS > > On 5/5/2020 5:32 PM, Jim Brown wrote: >> On 5/5/2020 4:44 PM, Paul Gacek via Elecraft wrote: >>> For what its worth and everyones milage will vary, I had a brand new >>> CM500 that I used for a week of hard operating while on a pretty >>> island and the boom came loose after a couple of days. >> >> Your experience is unusual. In about 11 years, the only thing that has >> ever gone wrong with my CM500s have been a broken cable, which, >> unfortunately, is not replaceable. I'm kind of a klutz, so I'm hard on >> cables, dropping them, kicking them, etc. Perhaps it got broken in shipping? >> >> I've never used anything but VOX for SSB and digital modes. That's >> always worked just fine as long as there's not loud noise (like when >> the XYL walks through the shack and lets the screen door slam). :) >> >> 73, Jim K9YC >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this email >> list: http://www.qsl.net/donate.html Message delivered to >> wes_n...@triconet.org > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Message > delivered to tony@verizon.net > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CM500 headset on K3S and KX3?
For the KX3, an off-the-shelf stereo-to-mono splitter will separate the mic and PTT lines. It also separates the mic bias (clean) from the logic signal (not so clean). Details here: https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/ For transmit audio setup, I collected various bits of knowledge from the manual and this list into a single article. https://observer.wunderwood.org/2015/09/09/transmit-audio-and-compression-with-the-elecraft-kx3/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 5, 2020, at 4:31 PM, Frank O'Donnell wrote: > > Phone newbie here. Any recommendations on off-the-shelf cables or adapters, > and a handheld switch, to enable use of a Yamaha CM500 headset along with PTT > functionality on both a K3S and KX3? > > Thanks much, > > Frank K6FOD > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Upper limits of KPA500?
The FCC document on estimating RF exposure lists “duty factor” for various modes. That is average power compared to peak while transmitting. SSB 20% SSB with heavy speech processing 50% FM, FSK, RTTY, carrier 100% CW 40% Separately, they talk about on/off periods, the average time spent transmitting during a 6 minute or 30 minute period. See pages 14 and 15. https://transition.fcc.gov/bureaus/oet/info/documents/bulletins/oet65/oet65b.pdf wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 4, 2020, at 7:40 AM, Randy Moore wrote: > > ICAS means Intermittent Commercial and Amateur Service. > > From the RCA Transmitting Tube Manual: > > Intermittent Commercial and Amateur Service (ICAS) covers aplications in > which high tube output is a more important consideration than long tube life. > The term "Intermittent Commercial" in this title applies to types of services > in which the operating or "on" periods do not exceed 5 minutes each, and are > followed by "off" or stand-by periods of the same or greater duration. The > term "Amateur Service" covers other applications where operation is of an > infrequent or highly intermittent nature, as well as the use of tubes in > "amateur" transmitters. ICAS ratings generally are considerably higher than > CCS ratings. Although the ability of a tube to produce greater output power > is usually accompanied by a reduction in tube life, the equipment designer > may decide that a small tube operated at its ICAS ratings meets his > requirements better than a larger tube operated within CCS ratings. > >> On May 4, 2020, at 8:55 AM, John Simmons wrote: >> >> Nowadays manufacturers use 'ICAS'. One even specs their amp for '100% duty >> cycle ICAS'. ICAS=Intermittent Continuous Amateur Service'. Gobbledegook! >> >> 100% duty cycle is what Alpha used to say brick on the key forever. FT8, >> JT65 are 50% duty cycle modes. SSB is about 33% during transmit, CW is 50% >> during transmit. Duty cycle has no time limit. >> >> -de John NI0K >> >> Dave Cole wrote on 5/4/2020 8:39 AM: >>> Hi Rick, >>> >>> This brings up a point I have been unsure about for years... Duty Cycle... >>> What constitutes 100%? Over how long a time frame? >>> >>> If I run JT65, (one minute on one minute off), and I use a timeframe of say >>> 5 minutes, I buy it is 50% duty cycle. >>> >>> But if I use a timeframe of one minute it is 100% Duty Cycle... >>> >>> So when stating duty cycle it is important to spec the timeframe, as you >>> did... Is there an actual timeframe stated someplace as a standard? >>> >>> I do like the way you stated it by the way... With time to 'catch the >>> breath'... >>> >>> 73, and thanks, >>> Dave (NK7Z) >>> https://www.nk7z.net >>> ARRL Volunteer Examiner >>> ARRL Technical Specialist >>> ARRL Asst. Director, NW Division, Technical Resources >>> >>>> On 5/3/20 8:53 PM, Rick Bates, NK7I wrote: >>>> I didn't add the obvious, FT8 in that manner is a 50% duty cycle but with >>>> enough time to 'catch the breath'. >>>> >>>> I remember back when it first came out, Wayne suggested to 'run it with >>>> all the LEDs lit' or something along that line but... it's capable of MUCH >>>> more than 500 watts and wisely better limited by firmware upgrades (in the >>>> early days I watched it put out almost 700, at which point I was far more >>>> cautious). It's nice to know there is a certain amount of 'overhead'. >>>> >>>> Rick NK7I >>>> >>>> >>>> On 5/3/2020 8:23 PM, Dave Cole wrote: >>>>> Hi Rick, >>>>> That is how mine behaves as well, almost exactly like that... However, I >>>>> will be running SSTV, and that is hard on the amp... I need to do a bit >>>>> more testing prior to that. >>>>> >>>>> As someone else said upthread, half power is really tough on the amp... >>>>> >>>>> 73, and thanks, >>>>> Dave (NK7Z) >>>>> https://www.nk7z.net >>>>> ARRL Volunteer Examiner >>>>> ARRL Technical Specialist >>>>> ARRL Asst. Director, NW Division, Technical Resources >>>>> >>>>> On 5/3/20 7:52 PM, Rick Bates, NK7I wrote: >>>>>> I spent 15 minutes active on 20M FT8 this afternoon (some lurking). >>>>
Re: [Elecraft] mailman.qth
groups.io is a reflector, but it also keeps an archive and does other stuff. I’ve been managing mailing lists for decades and groups.io is very good. But there isn’t really anything wrong with the current Elecraft mailing list, so I wouldn’t expect any changes. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 2, 2020, at 8:55 AM, Lynn W. Taylor, WB6UUT > wrote: > > If you ask people on a reflector who have been using a reflector for years, > and are accustomed to using a reflector, who know how to make best use of a > reflector, they're going to want to stick with the reflector. > > 73 -- Lynn > > On 5/1/20 11:05 PM, Jim Rhodes wrote: >> This has been discussed on some of the reflectors that I subscribe to. On >> all of them the move was basically voted down. So I guess user preference >> is to blame. >> On Fri, May 1, 2020 at 4:20 PM Neil Foster wrote: >>> I still wonder why Elecraft a forward looking company uses a "reflector" >>> like mailman rather than the .io type so many others now use. Sure makes it >>> easier to navigate using .io >>> Neil N4FN >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to jimk...@gmail.com >>> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Windows Needed
All of the Elecraft software is available for Mac, with one exception, the memory editor. You’ll need some sort of computer connection to back up the radio configuration and to update the firmware. Otherwise, the radios work just fine without a computer connected. For general computer logging, try RUMlogNG (free). That can be downloaded from the author’s site or the Mac App store. https://dl2rum.de/rumsoft/RUMLog.html The Mac Ham Radio blog posts about new releases of Mac tools for ham radio. https://www.machamradio.com wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On May 1, 2020, at 6:33 AM, Grant Youngman wrote: > > Elecraft software is all available in macOS compatible versions. The > Elecraft cable works just as well with a Mac. > > Unfortunately, much other ham radio software is not. It tends to be Windows > only, although there ARE good general purpose logging programs, digital > software, and software for most other functions available for macOS. I guess > the Windows focus is that a lot of the code is built by guys in their > basements that only have Windows machines, and they just don’t spend the > time/money to use cross-platform libraries in the process. And it’s the > dreaded Path of Least Resistance. > > I went the route of Parallels/Windows on my Macs rather than buy another > chunk of hardware to deal with. The lack of some main-line ham software in > macOS versions is generally irritating, I avoid it whenever possible, but it > isn’t always. It is what it is. > > When I’m out portable with my KX3, there’s no computer involved, and I log > with paper and pencil. One less thing to carry around and worry about > batteries for :-) > > Grant NQ5T > >> On May 1, 2020, at 8:38 AM, Tommy Judson via Elecraft >> wrote: >> >> >> So fast forward to today while in retirement I would like to work some 40 >> meter CW and reading various postings on the .www the products from Elecraft >> kept coming up - especially all the raves on their receivers. I do remember >> the saying, “if you can’t hear them, you can’t work them”. So here I am >> wanting to buy a KXN so I can go out and sit under a tree and do a little >> ham radio. >> >> I’ve read enough to want to get a KX3 so downloaded its user manual. Moving >> through it I ran across a sentence saying there was a need for a cable to >> hook to a PC…oops, that sounded like the Elecraft system was only compatible >> with Bill Gate's stuff and not Steve Job’s - darn. >> >> My question now is should I get software to provide a fake Windows platform >> for Elecraft or get a real PC and use it as a dedicated option with a KX3? >> If the later what would be the best choice to purchase? > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: The Colpitts mystery
I didn’t know about Dick Bash’s “The Final Exam” series at the time, but they
are in The Internet Archive. If you have a question about what was on the exam
in 1981, these probably have the answer.
https://archive.org/search.php?query=final%20exam%20bash
There are other license manuals there, too, from ARRL, Ameco, and Gordon West.
The 1933 ARRL manual is the earliest.
https://archive.org/search.php?query=amateur%20license%20manual
wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)
> On Apr 28, 2020, at 8:31 AM, John Simmons wrote:
>
> Anybody remember the Bash books?
>
> -de John NI0K
>
> Jim Campbell wrote on 4/28/2020 9:55 AM:
>> While in college, I co-oped with the FCC in Atlanta, GA. I had to take and
>> pass my Radiotelephone First and General class licenses before I was allowed
>> to administer those exams. If you did not pass a test you had to wait 30
>> days before you could take it again. Some applicants tried to game the
>> system by memorizing as many questions as they could when they first took
>> the test so it would give them a leg up the next time. On the second attempt
>> there were usually howls of anguish when they realized they were facing a
>> different version of the test with different questions.
>>
>> 73,
>>
>> Jim - W4BQP
>>
>> On 4/28/2020 10:17 AM, Bob McGraw K4TAX wrote:
>>> As a 17 year old, I rode the train {pulled by a coal fired locomotive} from
>>> Fulton, KY to Memphis, TN. I had to walk about 8 blocks to the Post Office
>>> building where the FCC administered the tests. I took the 4 elements and
>>> passed all 4 of them earning me a First Class Radio Telephone license on
>>> the first try. I recall many much older folks seemingly to be struggling
>>> to take the tests. Some commented "what's this kid doing in here?" Seems
>>> some had taken it several times without success. I spent the night with
>>> an old maid school teacher and relative in Memphis. I took my General
>>> class license test the next morning in the same place. The CW receiving
>>> portion, in the concrete basement with metal desks and metal chairs,
>>> sounded like marbles being dropped into a galvanized wash tub. So was
>>> that a T followed by an E or was that and H? Passed that one too. Then I
>>> rode the bus from Memphis back to my home in Martin TN. Yes there were
>>> several circuits to identify, and some to draw, as I recall. That was 60
>>> years ago. Glad I had the experiences.
>>>
>>> 73
>>>
>>> Bob, K4TAX
>>>
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jasimm...@pinewooddata.com
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to wun...@wunderwood.org
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
Re: [Elecraft] VOX on KX, using a Heil headset Questions
I’m sure that is a nice cable, but if you just want to plug a 1/8 inch mic plug into the KX3, an off-the-shelf $6 stereo to mono splitter will do the same job. I figured that out while drawing out the schematic for an adapter box. Details here: https://observer.wunderwood.org/2015/08/16/yamaha-cm500-headset-with-ptt-on-elecraft-kx3/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Apr 23, 2020, at 3:30 PM, stephen shearer wrote: > > They DO... http://www.dxstore.com/heil_acc.html (or HRO has them too)... > > AD-1KX3 Adapter for Elecraft KX3, 1/8in TRRS$21.95 > > > an adapter, anyway. > > 73, Steve WB3LGC > > On 4/23/20 5:55 PM, Nr4c wrote: >> If your Heil mic has a Dynamic element be sure and turn OFF the Bias. >> *I’d like to see Heil market a headset with plugs for KX3/2 radios. * >> >> Sent from my iPhone >> ...nr4c. bill > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] VOX on KX, using a Heil headset Questions
For these kinds of questions, I download the manual, open it in Adobe Reader, and search it. You might be able to search it in your browser. SSB VOX setup is described on page 20 of the KX2 Owner’s Manual. https://elecraftcom.myshopify.com/pages/kx2-fully-portable-transceiver-manuals wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Apr 23, 2020, at 11:18 AM, Carter Craigie wrote: > > Thanks, Jim. I think I have tried turning the MIK BTN to Off, but I will try > that again. > > Should doing that allow me to see “VOX” on my screen? > > Thanks for the help. > > Carter, N3AO > > Sent from my iPad > >> On Apr 23, 2020, at 2:12 PM, Jim Rhodes wrote: >> >> >> First thing is to turn the microphone buttons off. Am at work now. But it >> seems like the parameter comes up under "MIK BTTN" or something like that. >> You need to shut them all off, as well as the bias if not using an Icom/Heil >> Mike. Other choice is to buy or make a splitter and use a PTT switch. >> >>> On Thu, Apr 23, 2020, 13:02 Carter Craigie wrote: >>> Hi Fellow Elecrafters, >>> >>> For the life of me I just cannot figure out how to set up VOX on my KX2 and >>> KX3. I cannot seem to get the VOX annunciation to show on my screen...at >>> all. So I need help with this first. >>> >>> Next I need to know the Menu settings for using a Heil Headset. Are the >>> settings the same for each rig?) >>> >>> I am mainly a CW op, but there are many occasions I’d like to use SSB. >>> >>> Thanks in advance for any help! >>> >>> 73, >>> >>> Carter, N3AO >>> Blacksburg, VA >>> >>> -- >>> Carter, N3AO >>> Blacksburg, VA >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to jimk...@gmail.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 High SWR
If you want to build a dummy load, I recommend the Oak Hills Research RFL-100 kit for $50 (http://www.ohr.com/rfl100.htm). I took pictures while I was building mine. You can see those in this blog post. https://observer.wunderwood.org/2016/12/31/building-a-dummy-load/ wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Apr 13, 2020, at 10:02 AM, Chris Pinholster via Elecraft > wrote: > > I recently moved and set up the same temporary Butternut vertical as I used > in my previous restricted HOA location. (When this virus stuff is over and I > can get help, a small tower and a decent antenna will be erected). > > The K3 is factory built and does not have an ATU. I get a 99 high swr reading > on every band the antenna is tuned for, I replaced coax and connectors three > times. My Rig Expert analyzer shows swr below 2 on the two bands I wish to > use, 40m and 20m. In Tune the external P3000 shows swr below 2, however the > K3 still shows 99. > > I’ve looked through the archives and I can’t find the answer I was looking > for. (one that didn’t require sending the radio back to the factory). I am > hoping for an answer involving pilot error and an easy fix. The movers didn’t > handle the radio, I white glove delivered it to the new house myself. > > I don’t own a dummy load yet, having sold everything but the K3 when I went > to an HOA restrictive community for five years. > > Any help would be appreciated. > > Chris Pinholster > k4...@mac.com > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] No ALC Indication in DATA A mode with fldigi
If the input to the KX3 is too high, it turns off the audio to protect the radio. Try starting at zero and slowly increasing it. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Apr 5, 2020, at 7:22 PM, James Bennett via Elecraft > wrote: > > Mike - are you using Data-A mode? When I put my K3 into Data-A mode, the RF > scale becomes the ALC scale. > > Jim Bennett / W6JHB > Folsom, CA > >> On Apr 5, 2020, at 7:11 PM, KE0KAC wrote: >> >> I'm stuck trying to understand why I can't get any ALC bars when I'm using >> fldigi. I can connect headphones to the line that normally goes into the >> MIC connector and can vary the volume from complete silence to very loud so >> I know a signal is making it to the MIC jack. If I plug my MH3 microphone >> into the MIC jack and speak, I see the bars vary depending on how loud I >> talk. >> >> A question - when fldigi puts the KX3 into transmit and send data, should >> the RF scale disappear and be replaced by the ALC scale? Sometimes (like >> right now) I don't see the ALC scale BUT I see bars above the RF scale that >> I can vary using the MIC knob. What causes the ALC scale to show up? >> >> By the way, my KX3 is connected to a KXPA100 which the manual indicates has >> an ALC adjustment screw. Is the KXPA100 controlling some of this? >> >> Mike, KE0KAC >> >> >> >> -- >> Sent from: http://elecraft.365791.n2.nabble.com/ >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to w6...@me.com > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] axt1 tripod
Tripod screws are 1/4-20, so an angle bracket and a screw and a wingnut could help. Tilt the head over 90º. I did something similar to attach a Nagoya NMO base station mount to a tripod. Photos and description here. I’ve since replaced the hex nut with a wingnut. https://observer.wunderwood.org/2018/07/08/using-a-mobile-antenna-as-a-temporary-base-antenna/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 31, 2020, at 5:49 PM, Jay Rutherford wrote: > > I raised this issue after getting my AX1 with tripod adaptor, since it fit > neither of my consumer tripods. You need either a really small tripod head or > a adjustable ball-type adapter that elevates the AX1 up enough to use the BNC > plug to the radio. > > Here is a link to one small ball head adapter from Amazon: > > AKOAK 1/4" Swivel Mini Ball Head Screw Tripod Mount for DSLR Camera Camcorder > Light Bracket > 4.4 out of 5 stars > > I hope this helps. > > 73 Jay K3BH > > > On Tue, Mar 31, 2020, at 18:16, rwwatson wrote: >> Hello list, >> I now almost have everything I need for my kx3 portable setup. I want to use >> the ax1 with an axt1 adapter and my tripod has a removable camera plate >> which seems to prevent the coax from attaching to the axt1. any suggestions >> on a good tripod. >> >> >> >> -- >> Sent from: http://elecraft.365791.n2.nabble.com/ >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to k...@arrl.net >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Not moving your wrist sending CW ?
II.9.10. Using ‘KN’ ‘K’ = ‘over’. Sending just ‘K’ at the end of your over leaves the door open for other stations to break in. If you don’t want to be interrupted, send ‘KN’. ‘KN’ means that you want to hear ONLY the station whose callsign you just sent (= ‘go ahead, others keep out’ or ‘over to you only’), in other words: no breakers at this time please. ‘KN’ is mainly used when chaos is around the corner. A possible scenario: different stations are coming back to your CQ. You are decoding one partial call and you send: ‘ON4AB? DE G3ZZZ PSE UR CALL AGN (again) K’. The station ON4AB? answers you, but in addition several other stations call simultaneously, making it impossible to copy his call. The procedure is to call ON4AB? again and end your call with ‘KN’ instead of ‘K’, this to emphasize you only want to hear ON4AB? come back to you. Example: ‘ON4AB? DE G3ZZZ KN’ or even ‘ONLY ON4AB? DE G3ZZZ KN’. If you are still short of authority on the frequency you may try ‘ON4AB? DE G3ZZZ KN N N N’ (keep some extra space between the letters N). Now you are really getting nervous... Page 22: https://www.hamradio-operating-ethics.org/wp-content/uploads/2017/01/1-Eth-operating-EN-iaru-PRINT-1july2008.pdf wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 29, 2020, at 2:46 PM, Fred Jensen wrote: > > Officially, "K" is the prosign for "invitation to transmit." OK, nothing is > "official" in ham radio, but hams have traditionally ended a CQ or a > transmission with "K", an invitation to transmit ... roughly the CW > equivalent of "over." Also traditionally, although less so, is "KN" which > roughly translates, "over to the station I'm in contact with only." Ending a > CQ with "KN" is thus mildly nonsensical since you're not in contact with > anyone yet. > > However, consider that the Morse character for "?" translates to "IMI" [and > others such as "UTI" and "EWI"], the prosign for "Please repeat," or "I will > repeat." In the heyday of radiotelegraphy, "INT" was used by the Navy as the > interrogatory prosign meaning "What follows is a question." INT QSB, "Are my > signals fading?" Hams and most commercial ops just used IMI for either, > still do, and somehow, we're not confused. K or KN ... most will figure it > out. > > 73, > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > On 3/29/2020 2:13 PM, brianchapn...@rogers.com wrote: >> Jim, pardon my ignorance but KN means end of transmission or invite a >> specific station to transmit from what I see. Why would that deter a reply >> from a CQ? I am sure you are right but I would like to know the experienced >> understanding from a pro. >> >> Brian VE3GMZ >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Utility vs macOS Catalina
Check whether it is a 32 bit app. I just checked my apps and my KXPA and PX3 apps are 32 bit. Catalina requires 64 bit apps. This explains how to check. https://support.apple.com/en-us/HT208436 wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 27, 2020, at 4:04 PM, Don Putnick wrote: > > Hi all, > I'm working with Rob at Elecraft on this, but I'm trying to gather more > data for us. When I open the K3 Utility under Catalina, nothing is > displayed. If I go down to the dock, right click on the utility, then > select "Show all windows", the utility main screen opens. BUT if I click on > the screen, it closes immediately. The KAT500 Utility works just fine, so I > don't think its the usb-to-serial cable or the driver. And the K3 Utility > works correctly under macOS Sierra. Anyone else experiencing this? > 73 Don NA6Z > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX2 Safe Operating PA Temperature
KX2 manual, page 27: "5.0 watts or lower is recommended in all data modes. The KX2 will reduce power, if necessary, to maintain a safe operating temperature." wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 26, 2020, at 10:45 PM, Joan via Elecraft > wrote: > > The KX2 will automatically fold back its power (responding to temperature) to > prevent thermal runaway or damage to its finals > > That being said, it is routinely recommended that when running any 100% duty > cycle mode (e.g. typical digital text modes or FM Phone) one reduces RF > output to 50% of rated output > > 73 de KX2CW > Joan > > Darmok and Jalad at Tanagra, said Piglet. > Shaka, when the walls fell, said Pooh. > >> On Mar 26, 2020, at 18:09, Steve Anness wrote: >> >> This question was posed last October by another on the reflector in regards >> to the KX3 but does not look like there was a response. I had posed the >> question once to Elecraft support and believe my email got lost in the >> fray. When I posted the question to Elecraft support it was a month after >> I received my KX2 and I was running 10 watts with it and it had gotten up >> to 61C which is what prompted the question. >> >> I have been running FT8 at around 5 watts recently and I see it getting up >> to 51C. >> >> At what point should I stop operating and let it cool down? I love my KX2 >> and don't want to damage it. I do know that these are used in fields by >> many so perhaps I am just being paranoid. >> >> 73 de KJ5T >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX2 color option: Army green (olive)?
A bazllion years ago, Zone VI insisted on making a 4x5 field camera bag in white, so it wouldn’t heat up in the sun. https://www.keh.com/shop/large-format-zone-vi-15x11x9-wht-4x5-669764.html wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 16, 2020, at 11:13 AM, Steve KC6ZKT wrote: > > Several of us SOTA operators have asked for a high visibility color > option (orange or green-yellow). I think I would choose the current > charcoal over olive drab. > > On 3/16/20 10:37 AM, Phil Hystad via Elecraft wrote: >> My Elecraft equipment is already olive drab — I favor black olives. >> >> :-} K7PEH >> >> >>> On Mar 16, 2020, at 10:19 AM, Wayne Burdick wrote: >>> >>> One of our customers who has outfitted units with KX2s is hoping we'll >>> provide an Army-green case color option (olive drab). Note: We're not >>> talking about camo -- just a solid color :) >>> >>> To make such an option viable we'd need to know if there's enough demand, >>> both military and otherwise. >>> >>> Please drop me an email if you might be interested, or have an opinion on >>> this possibility. >>> >>> Thanks, >>> >>> Wayne >>> N6KR > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Power Factor
In the late 1980s, HP Labs was having wiring failures and fires in the cubicle wiring. Someone visited from MIT Project Athena and made a side comment about their wiring problems with computers at every desk. For a while, HP Labs had extension cords strung everywhere to reduce the demand on the wiring. Those went away when Steelcase replaced all the cubicle wiring with stuff that could handle the triplen current. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 4, 2020, at 10:44 PM, Jim Brown wrote: > > On 3/4/2020 10:15 PM, Jim Brown wrote: >> Power factor is a quantity associated with mains power (and similar power >> distribution systems). In the old days (when I went through EE), it was, >> indeed, related to the phase angle. > > I meant to add that power factor now includes the triplen harmonics resulting > from non-sinusoidal current with power systems that are mostly electronic > loads. Current flows mostly in short peaks at the positive and negative peaks > of the mains waveform to charge the filter capacitors in the power supply; as > a result, the voltage waveform is rounded off and the current is rich in > harmonics of the mains frequency, 50 or 60 Hz. > > Nearly all power distribution uses 3-phase wiring, and "triplen" harmonics > (those whose number is divisible by 3) add in the neutral, no matter how well > balanced the load between phases. This turned into a major problem roughly 50 > years ago, when a very high fraction of current in these systems was > delivered to electronic loads, everything from fluorescent lights to > computers to anything with an AC to DC power supply. The most dangerous side > effect is that triplen currents in the neutral of 3-phase systems can be > almost twice the current in the phases, which can cause destructive failures > in older systems, where the neutral used conductors and hardware rated for > half the current in the phases! The movie "The Flaming Inferno" is based on > the true story of a massive fire in a high rise that was started by that > neutral current, spread through the building in vertical "riser" spaces, and > that was fueled by the insulation on the cables themselves! Sometime in the > last century, a major TV station almost went off the air because excessive heating of their power distribution was close to catching on fire! I attended an SBE (Society of Broadcast Engineers) meeting led by the consultant who worked with the station engineers on the problem. > > MAJOR changes were made to standards for mains wiring after this event, > including the rating of transformers and neutral hardware to handle the peak > currents and the harmonic content, conduit requirements for the wiring, and > requirements for insulation on the wiring that does not contribute to flame > spread and that does not produce toxic fumes. > > BTW -- the triplen harmonics also appear on equipment ground, and are the > reason why we mostly hear power line noise in the audio as "buzz" (triplen > harmonics of 50/60 Hz) rather than "hum" (pure 50/60 Hz). > > There's a not-too-technical discussion of all of this written for hams in > http://k9yc.com/GroundingAndAudio.pdf > and a more detailed one written for sound and video professionals in > http://k9yc.com/SurgeXPowerGround.pdf > > 73, Jim K9YC > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Excel Test
I got it from somebody else. Before I heard this, I said that PDF is where text goes to die. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 26, 2020, at 6:46 AM, Chris R. NW6V wrote: > > Walter, > > Bravo!. :-) I'm going to steal this line... :-) > > 73 Chris NW6V > > On Tue, 25 Feb 2020 08:09:02 -0800 AM wrote: > >> >> "Turning a PDF back into structured text is like turning hamburger back >> into a cow." >> >> >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Excel Test
Unfortunately, it is very hard for computers to extract the information in a PDF. The text can be pulled out, but the columns and other data organization are lost. I’ve worked on search engines for years, and parsing PDF is a mess. Turning a PDF back into structured text is like turning hamburger back into a cow. If you expect to use the data for anything in the future, save it in a data format. CSV is good, XML (ADIF) is good, JSON can be good, whatever. Extracting a log from a PDF would likely require reading the document and typing in the data. If you want a visual record that cannot be changed, PDF is a good choice. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 25, 2020, at 3:40 AM, David Ferrington, M0XDF > wrote: > > Sorry, was this just about a way to display what was logged, in which case > PDF would be good, or was it about a way to provide a plain text version of > what was logged? > > 73 de David, M0XDF > > >> On 24 Feb 2020, at 20:20, Lyn Norstad wrote: >> >> I use Excel to log two different nets, and routinely export the logs as PDF >> files. >> >> It works very well. >> >> 73 >> Lyn, WØLEN >> >> >> -Original Message- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Ferrington, >> M0XDF >> Sent: Monday, February 24, 2020 12:08 PM >> To: K8TE >> Cc: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] Excel Test >> >> I don’t need to tell you that’s horrid! CSV would be better, surely? >> >> 73 de David, M0XDF (K3 #174, P3 #108) >> -- >> He who asks is a fool for five minutes, but he who does not ask remains a >> fool forever. -Chinese proverb >> >>> On 24 Feb 2020, at 17:59, K8TE wrote: >>> >>> This is a test to determine if pasting from Excel will provide a readable >>> format. I created this message using the "Post New Message" capability at >>> the Elecraft Nabble page. I copied from an Excel worksheet I created this >>> morning by copying and pasting from an RBN result. Per Nabble's >>> instructions, I checked the "Message is in HTML Format" box. If it works, >>> this could be useful for the proposed Elecraft Net logged in Excel, or >>> perhaps other programs.73, Bill, K8TEde dx freqcq/dx snr >>> speed timeEA5WU >>> K8TE14060.5 CW CQ 4 30 wpm 1731z 24 FebCT7ANO K8TE >>> 14060.4 CW CQ 5 31 wpm >>> 1731z 24 FebW4AX K8TE 14060.6 CW CQ 5 30 wpm 1731z 24 >>> FebK3PA K8TE 14060.6 >>> CW CQ 5 30 wpm 1731z 24 FebEA8BFK K8TE 14060.5 CW CQ >>> 6 31 wpm 1732z 24 >>> FebHA7GN K8TE 14060.6 CW CQ 7 30 wpm 1730z 24 FebJ68HZ >>> K8TE 14060.6 CW CQ >>> 9 30 wpm 1731z 24 FebW3LPLK8TE 14060.5 CW CQ 10 31 wpm >>> 1731z 24 FebW1NT >>> K8TE14060.5 CW CQ 11 31 wpm 1730z 24 FebN7TR K8TE >>> 14060.5 CW CQ 12 30 wpm >>> 1731z 24 FebKM3T-2 K8TE 14060.5 CW CQ 14 30 wpm 1730z 24 >>> FebW1NT-6 K8TE >>> 14060.5 CW CQ 14 30 wpm 1730z 24 FebKM3T K8TE 14060.5 >>> CW CQ 15 30 wpm 1730z >>> 24 FebK2DB K8TE 14060.7 CW CQ 16 30 wpm 1730z 24 FebW8WTS >>> K8TE 14060.5 CW >>> CQ 16 30 wpm 1730z 24 FebVE6AOK8TE 14060.7 CW CQ 16 >>> 28 wpm 1730z 24 >>> FebK9LC K8TE 14060.4 CW CQ 16 30 wpm 1730z 24 FebK2PO/7 >>> K8TE 14060.5 CW CQ >>> 18 31 wpm 1730z 24 FebN2QT K8TE 14060.5 CW CQ 18 30 wpm >>> 1730z 24 FebKC0VKN >>> K8TE14060.6 CW CQ 18 30 wpm 1730z 24 FebW4KAZK8TE >>> 14060.5 CW CQ 19 31 >>> wpm 1730z 24 FebCT7AHV K8TE 14060.5 CW CQ 19 30 wpm 1730z >>> 24 FebN9YKEK8TE >>> 14060.5 CW CQ 22 31 wpm 1730z 24 FebW7HR K8TE 14060.7 >>> CW CQ 24 30 wpm 1730z >>> 24 FebW7HR K8TE 14060.5 CW CQ 24 30 wpm 1730z 24 FebK1TTT >>> K8TE 14060.5 CW >>> CQ 24 30 wpm 1730z 24 FebW3UA K8TE 14060.5 CW CQ 26 >>> 30 wpm 1730z 24 FebW3OA >>> K8TE14060.5 CW CQ 28 30 wpm 1731z 24 FebWZ7I K8TE >>> 14060.5 CW CQ 29 30 wpm >>> 1730z 24 FebVE7CCK8TE 14060.5 CW CQ 33 30 wpm 173
Re: [Elecraft] kx3/wsjtx, multiple notches?
Instead of a notch, I’d try low-cut and high-cut to narrow in on the signal. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 24, 2020, at 10:27 AM, Tox wrote: > > Hello, > > Between the kxpa100 and getting a fan dipole just above roofline, I'm > finally able to make ft8 contacts fairly consistently in North America > when my local broadband noise source isn't operating. > > There are times though when one of a couple adjacent stations a mile > or two from me either swing their beam over my dipole, or crank the > knob, and desense my kx3 pretty solidly. > > I'm slowly learning how to tune the skirts and wield the notch, so can > sometimes work the one edge of the ft8 range, but there are also times > both of them are active at the same time, and trying to grab a 400kc > slice in between them to work hasn't panned out so far. > > Is there a way, either in-radio, or with wsjtx, to do *two* > controllable notch filters, so the world doesn't disappear into the > shadow of +18s? > > Thanks, > > Scott > AD6YT > > > > -- > Scott Small > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 I/Q output and band width
You actually have 22 kHz of in-phase signal and 22 kHz of quadrature signal on the stereo output. You can combine those to get 44 kHz of bandwidth. More info here: https://en.wikipedia.org/wiki/In-phase_and_quadrature_components wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Feb 4, 2020, at 2:45 PM, g...@gmx.net wrote: > > Hello, > for a long time I just haven't looked into the details, but now I did > and I'am confused. > When I plug it into a soundcard it appears to show the current station > in the center of the display, to my understanding the center of the > display is the half of the sampling frequency of the sound card. > This ist at least confirmed in the manual pg. 26 (Rev C5). > > When I sample the I/Q signal by myself, the same signal appears at the > lower end of my spectrum. > Now it looks like I'm not getting the full bandwidth sampled? With fs of > 44.1kHz I can only see 22kHz of bandwidth after FFT. > > So, according to many articles I read about FFT, the resulting bandwidth > is always fs/2. So how can we see 44kHz of spectrum on a 44kHz sound > card? I'm confused... > > 73 Gernot DF5RF > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 Shipping Delay
One of the Python developers observed that when the test suite passes, it doesn’t mean that Python is bug-free. It means that the test suite is insufficient. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 16, 2020, at 12:19 PM, Gwen Patton wrote: > > Murphy's Law of Cybernetic Entomology says: "There's always one more bug." > So "bug-free" is impossible. > > Gwen, NG3P > > On Thu, Jan 16, 2020 at 2:50 PM rich hurd WC3T wrote: > >> In the computer programming world, it's "bug free, cheap, or on time." :) >> >> >> On Thu, Jan 16, 2020 at 2:25 PM Fred Jensen wrote: >> >>> "Good, Fast, Cheap"** ... choose two. >>> >>> 73, >>> Fred ["Skip"] K6DGW >>> Sparks NV DM09dn >>> Washoe County >>> >>> **Said to a Marine BG. He chose Good & Cheap. We declined to bid >>> >>> On 1/15/2020 8:18 PM, Terry Brown wrote: >>>> I am one of those far down the list in the first shipping group. When >> I >>> read the notice from Eric and Wayne, about the new shipment dates for the >>> K4, I was reminded of a comment from my builder a year and a half ago >> when >>> our new house was about 4 months behind schedule. >>>> >>>> He said, we could have finished your house on time but it would have >>> been finished by subcontractors who don’t provide the quality we insist >>> on. Besides, and this is the important part regarding the K4, he said, >> “ I >>> know you are frustrated, but the day you move in and can begin to enjoy >>> the quality of your home as long as you live here, the delay won’t mean >>> anything.” >>>> >>>> He was absolutely right. When I walk around my new home and look at >>> how well it’s made and the incredible quality of the finish work, the >> delay >>> is meaningless. We all who are anxiously awaiting the K4, will feel the >>> same way once it arrives at our homes.Besides, it will be a better >> more >>> refined radio in May than it would have been if shipped now. >>>> >>>> 73, >>>> >>>> Terry, N7TB >>>> >>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to r...@wc3t.us >> >> >> >> -- >> 72, >> Rich Hurd / WC3T / DMR: 3142737 >> Northampton County RACES, EPA-ARRL Public Information Officer for Scouting >> Latitude: 40.761621 Longitude: -75.288988 (40°45.68' N 75°17.33' W) Grid: >> *FN20is* >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to ard...@gmail.com > > > > -- > > -+-+-+-+- > Jenny Everywhere's Infinite: Quark Time > http://quarktime.net > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: Speaker Wire Recommendations?
I missed that “the audio system” was hi-fi instead of communications audio. wunder Walter Underwood wun...@wunderwood.org http://observer.wunderwood.org/ (my blog) > On Jan 10, 2020, at 3:35 PM, Fred Jensen wrote: > > Hmmm ... I've always thought 70V systems were designed for PA usage where BW > is somewhat limited. Something about the transformers saturating on the hi > power in the extreme bass of quality Hi-Fi/Stereo/HT systems? Not a > professional however, easily could be wrong. > > 73, > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > On 1/10/2020 11:08 AM, Walter Underwood wrote: >> If it is a long run, you might use a 70.7 V system with Cat 5 cable. Put >> transformers on each end to run higher voltage (lower current) on the wire >> and use cheap, good twisted pair. >> >> https://en.wikipedia.org/wiki/Constant-voltage_speaker_system >> >> Another approach would be to use line-level over Cat 5, then put an audio >> amplifier at the speaker. I use a dual 15 W amp that runs off of 9 to 18 V. >> >> https://smile.amazon.com/gp/product/B00C4MT274/ >> >> Amazon shows the exact model at not available, but there are plenty of >> similar alternatives. >> >> https://smile.amazon.com/Amplifier-DROK-Channel-Digital-Speakers/dp/B07PYGCVWJ/ >> https://smile.amazon.com/dp/B075JDPTKM/ >> >> wunder >> K6WRU >> Walter Underwood >> CM87wj >> http://observer.wunderwood.org/ (my blog) >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: Speaker Wire Recommendations?
If it is a long run, you might use a 70.7 V system with Cat 5 cable. Put transformers on each end to run higher voltage (lower current) on the wire and use cheap, good twisted pair. https://en.wikipedia.org/wiki/Constant-voltage_speaker_system Another approach would be to use line-level over Cat 5, then put an audio amplifier at the speaker. I use a dual 15 W amp that runs off of 9 to 18 V. https://smile.amazon.com/gp/product/B00C4MT274/ Amazon shows the exact model at not available, but there are plenty of similar alternatives. https://smile.amazon.com/Amplifier-DROK-Channel-Digital-Speakers/dp/B07PYGCVWJ/ https://smile.amazon.com/dp/B075JDPTKM/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 10, 2020, at 6:02 AM, Randy Farmer wrote: > > If the present speaker wire is nothing but some kind of parallel conductor > zip cord, you have a good chance of fixing the problem by replacing it with a > twisted pair geometry cable (no shield or ferrites required). I've used > Audioquest FLX-DB 14/2 with good success with a hi-fi system located > literally underneath my antennas on the roof. You can get it at Crutchfield, > or probably many other outlets, at a fair price. > > 73... > Randy, W8FN > > On 1/10/2020 2:09 AM, Clay Autery wrote: >> OK... so I am knee deep in assembling and installing a subRX, et al., but >> got reminded by the XYL that I STILL have not addressed the signal bleed >> into the audio system via the long runs of parallel conductor speaker wires >> in the HT setup. >> In order to maintain a high "SAF" (Spouse Acceptance Factor), I need to deal >> with this issue WHILE I am in the attic re-configuring the network and >> routing various shack related wiring. >> >> I cannot imagine a stellar group of operators as are gathered here have not >> had to deal with this before.I am hoping that replacing the >> speaker wire with either simple twisted pair (or shielded, twisted pair, >> w/shield properly terminated) will mitigate the hits the HT system is taking. >> >> *Q: Do any of y'all have recommendations for a particular wire stock for >> use in this application?* Small system... only about 50W per channel on the >> 5 main speakers, so they don't have to be monster-sized conductors. I >> considered using CAT-5(+) wire and bonding all 4 pair to a single loop, but >> I don't think a single run would be enough copper (?), and I don't want to >> make multiple runs per driver. >> >> *Any ideas?* >> >> 73, >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 with KX3 Companion application
From the website for KX3 Companion: "It connects to your KX3 by using the USB Serial cable that comes with the radio. You’ll also need an inexpensive OTG Cable adapter to connect the serial USB to your mobile device. You can find them for a very few dollars. No other cables are needed!” https://kx3companion.com I don’t know any other details. I don’t use that app and I don’t have any Android devices. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 8, 2020, at 12:36 PM, Aubrey Mason wrote: > > As someone who just bought a KX3 - I am ignorant of how they connect to other > devices... > > I recently purchased a KX3 Companion app for my tablet to use as a waterfall > display and I'm having difficulty finding cables to connect the two together. > > Has anyone else used the KX3 Companion app with the KX3 and how did you > connect them? > > > Aubrey Mason > WA6DMI > San Antonio > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Upgrading the Shack
I don’t see how the delivery companies are keeping up. Parcel volume doubled in four years and I expect it has been going at that rate for a decade or more. I’m not at all surprised that they have problems. This article says that carriers shipped 2,760 parcels per second in 2018 worldwide. https://www.supplychaindive.com/news/parcels-per-capita-revenue-e-commerce/564680/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 25, 2019, at 2:19 PM, Nr4c wrote: > > Is this “white truck” vs “brown truck” match ever going to end? There many > horror stories abound on both sides. But none really “prove” anything. Both > have their ups and downs. > > It’s Christmas, give it a break. > > Sent from my iPhone > ...nr4c. bill > > >> On Dec 25, 2019, at 2:03 PM, Tox wrote: >> >> Ha! >> >> I have vivid memories of a $100k rackmount computer UPS dropped (on a >> pallet) from high enough the computer ended up 2" shorter and had to be >> scrapped by the vendor. >> >>> On Wed, Dec 25, 2019, 10:35 AM richard gilley >>> wrote: >>> >>> When my Concept 2 rower was dropped off damaged; I was told by UPS that if >>> a heavy item is not shipped Freight it will be damaged. The why is, >>> regular shipping is handled by hand thus gets damaged, freight is by pallet >>> and fork lift. >>> AD1G >>> >>>>> On Dec 25, 2019, at 11:58, Mike VE3YF wrote: >>>> >>>> Hi Joe: >>>> >>>> I think all the courier services have gone downhill. They have us where >>> they want and not much we can really do. >>>> >>>> Merry Christmas Joe. >>>> >>>> -- >>>> >>>> *73 De Mike* >>>> *VE3YF >>>> >>>> _/http://www.ve3yf.com/_* >>>> >>>> __ >>>> Elecraft mailing list >>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>>> Help: http://mailman.qth.net/mmfaq.htm >>>> Post: mailto:Elecraft@mailman.qth.net >>>> >>>> This list hosted by: http://www.qsl.net >>>> Please help support this email list: http://www.qsl.net/donate.html >>>> Message delivered to richgilley...@gmail.com >>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to scott.sm...@gmail.com >>> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to n...@widomaker.com > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Reaching Across the Chronological Divide
Interesting that nobody has yet mentioned Scouting and Jamboree on the Air (JOTA). Here is an article about a troop using amateur radio to coordinate dispersed camping groups and train for em-comm. https://blog.scoutingmagazine.org/2019/12/24/assistant-scoutmasters-help-scouts-get-trained-to-be-amateur-radio-operators/ A troop in our area uses radios to allow groups of older youth to hike in separate groups. The fast group (always the youth, oddly) checks in every 15 minutes. If they can’t make contact, they stop until they can. With a license, they can switch from FRS/GMRS to amateur bands and hike with a bigger gap. JOTA is on the third full weekend of October every year. This year, we had over 9000 Scouts participate in the US. https://k2bsa.net/jota-usa-reports/ From running a JOTA station a couple of times, I believe that prospective hams have just as wide a range of interests as active hams. We need a shotgun approach with each pellet (metaphor falling apart here) being someone who is excited about that activity. You don’t have to be an expert—I ran the “send your name in Morse Code” station and I’m not a CW operator—but you do need to represent how that activity could be exciting. Hands on, do everything hands on. No butts in seats for PowerPoint. Anybody ever say “I think I’ll go home and watch a nice PowerPoint preso tonight”? Here are some photos from our JOTA station this year. I’m the guy with the white hair. Oh, that doesn’t help. White hair and beard. Note the empty log sheet in front of the KX-line. HF was pretty dead. Must do digital modes next year. https://www.flickr.com/photos/walter_underwood/albums/72157711437854946 wunder K6WRU Walter Underwood Radio Scouting Chair, Pacific Skyline Council http://observer.wunderwood.org/ (my blog) https://www.linkedin.com/in/walterunderwood/ > On Dec 23, 2019, at 9:59 PM, donov...@starpower.net wrote: > > Eric, > > > If you've grown tired of the usual awards, there's the "Alphabet Sandwich" > Call Letter Award. See page 4: > > > https://ftp.unpad.ac.id/orari/orari-diklat/pemula/organisasi/internasional/REG%203/JAPAN.pdf > > > > 73 > Frank > W3LPL > > - Original Message - > > From: "Eric J" > To: elecraft@mailman.qth.net > Sent: Monday, December 23, 2019 6:56:22 PM > Subject: Re: [Elecraft] Reaching Across the Chronological Divide > > I mean this sincerely. I'm NOT in grumpy-old-man mode, though I can do that > very well. The majority of QSOs with new people are about as interesting, > enduring and deep as a short chat in the checkout line at Safeway. Many > aren't even that interesting. PSK ops just throw on a brag tape and walk > away. It's a pleasant few minutes, but it rarely leads to anything more. It > does happen, but who in their right mind would spend thousands of dollars and > hours on the outside chance it does? The opportunity for superficial chit > chat with strangers was NEVER on my mind at 14 when I got interested in ham > radio so it's a bit much to expect teenagers today to care about that. > > Ham radio has always been chock full of quick award-qualifying or contest > contacts. Worked All Continents, countries, states, provinces, counties, > grids, lighthouses, summits, guys named Fred. Go back as far as you want in > QST and it's full of honor rolls, contest results...and SKs. It's nothing new > to this period in ham radio. But ham radio has also been full of interesting > challenges too. It's never been a very homogeneous hobby. I have no > predictions except things are rapidly changing and that will continue in > whatever direction those entering the hobby take it. The Baofeng Techs will > change it as much as us Heathkit Kids did. Change is good. > > Eric KE6US > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to donov...@starpower.net > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Awards
An “NU” station, KB6NU, collects cards from stations that spell words, like x#DAD. https://www.kb6nu.com/category/qsls/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 24, 2019, at 8:33 AM, Carl Yaffey wrote: > > I’m pretty sure I’m the ONLY ham who collects cards from stations with NU in > their calls. > > Yeah, off topic. Sorry. Hi hi > > 73 > > > Carl Yaffey K8NU > cyaffey at gmail.com > 614 268 6353, Columbus OH > http://www.carl-yaffey.com > http://www.grassahol.com > http://www.bluesswing.com > Https://www.columbusfolkmusicsociety.org > http://www.timbrewolves.carl-yaffey.com > http://www.columbusshotokankarate.com > > > > > > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Linux KX3 memory editor
There is an Elecraft Memory Editor for K3, K3S, KX2, and KX3. It is Windows-only. https://elecraft.com/pages/elecraft-frequency-memory-editor-software DL2RUM wrote a Mac-only memory editor. https://dl2rum.de/rumsoft/Elecraft.html I’ve heard that the Elecraft command language is based on the Kenwood commands, so a program for Kenwood radios might work. The commands are documented in the programming manuals. https://elecraft.com/pages/programmers-reference-manuals wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 19, 2019, at 9:39 AM, Greg Troxel wrote: > > Thorsten Fricke writes: > >> Am 17.12.19 um 21:44 schrieb Wayne Chandler: >>> I recently bought KX3 shack in a pack, very happy I did. >>> >>> I use Linux and CQRLOG. I don't use Windows or Wine, no exceptions. >>> I'm looking for software to read, edit, save frequency memories using >>> Linux only. No Windows or Wine. Any recommendations? >> >> Can't this be done with the KX3 Utility from Elecraft directly? At least >> for my KX2 there is a native Linux version available for download. As I >> realized yesterday, even for 64bit. > > Last I knew, the KX3 Utility at least on Mac did not support editing > memories, and I assumed the Linux version didn't either. > > It also seems that there is no specification of the memory access > protocol used by the memory editor, although it seems highly likely to > be straightforward. I would be nice for Elecraft to publish that, so > it could end up in e.g. chirp. > > https://github.com/ik5pvx/k3mem > > > > 73 de n1dam > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Linux KX3 memory editor
You might see if you can get the Chirp support for the K3 and KX3 started. It has been stalled for seven years. https://chirp.danplanet.com/issues/248 I think Wizkers can load and save memories, though I haven’t tried it. http://www.wizkers.io/wizkersradio If you want to do some Python programming, you could start with one of these apps. http://forum.wizkers.io/t/swr-sweep-with-wizkers-and-kx3/43 https://github.com/ulthiel/KX3tools wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 17, 2019, at 12:44 PM, Wayne Chandler wrote: > > I recently bought KX3 shack in a pack, very happy I did. > > I use Linux and CQRLOG. I don't use Windows or Wine, no exceptions. > I'm looking for software to read, edit, save frequency memories using > Linux only. No Windows or Wine. Any recommendations? > > Thanks, > > Wayne > -- > Wayne Chandler > K7TZH > 0xB92CF68F > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: DSP Bandwidth Limit
> On Dec 13, 2019, at 12:30 PM, Joe Subich, W4TV wrote: > > A 5 KHz *audio* bandwidth would be equivalent to a 10 Hz RF (IF) > bandwidth. I expect you mean a 10 kHz RF bandwidth, not 10 Hz. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] AX1 (and AXE1) Report
Which mode? wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Dec 9, 2019, at 6:30 PM, VE2PID wrote: > > Hi folks ... Today I made my 100th QSO using the AXE1. So far (40 and 20 > meters combined) and with 5 or 10 Watts (KX2-KX3-AXE1-AX1), the average > distance of contacts is 1581 km with a maximum of 5635 km. Very nice antenna > for portable operations. ... > 73, de Pierre VE2PID > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4: savable profiles?
Savable and shareable would be excellent. Split the options from the calibration parameters. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 27, 2019, at 5:06 PM, Wayne Burdick wrote: > > >> stephen shearer wrote: >> >> Wayne, HAVE a great Thanksgiving... > > Thanks! Ditto to you & all. > > >> I may not have been clear. >> I am tired of W10... > > Me too, and I don't even use it :) > > >> I do like the idea of initialization files for different usage (contest, DX, >> casual), if different. >> One click to re-set all the settings, although I always just set the KX3 and >> operated... >> Although, it would be nice to be able to save all the settings (mike, AF, >> Power, etc) for my FT8 stuff and a different set of settings for SSB... > > Definitely. That is already in the works. > > 73, > Wayne > N6KR > > >> >> 73, steve WB3LGC > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Ris: Elecraft web site off? TO DON WILHELM AND ERIC SCHWARTZ
This site is a handy way to check if a site is down for everyone or just for you. https://downforeveryoneorjustme.com/elecraft.com wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 25, 2019, at 5:53 AM, IK6QON Francesco wrote: > > Same story here in L'Aquila. > > > Il giorno lun 25 nov 2019 alle ore 14:31 IK4EWX ha > scritto: > >> Don, and all the friends that answered, it is really a strange thing. >> Other italian hams friend of mine tried to connect Elecraft web site and >> all >> were unable to connect it. >> We have different internet providers, we all are unable to connect it. >> I even changed the DNS (8.8.8.8...)on pc, but this not the problem. >> Don, you worked with Elecraft, can you say this thing to Elecraft people? >> Thanks es 73, >> Ian IK4EWX >> >> >> >> -- >> Sent from: http://elecraft.365791.n2.nabble.com/ >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to ik6...@gmail.com >> > > > -- > 73's Francesco *IK6QON* > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Using dynamic mic on KX-3?
> On Nov 9, 2019, at 3:56 PM, Jim Rhodes wrote: > > Set the mic gain and compression as the manual says. Or set the mic gain and compression for your voice. Also set TX EQ. The manual is a great start, but I collected some other ideas from this list and wrote a blog article. For example, you can use the DVR to listen to the settings. That allows you to hear your voice as other operators will hear it, without bone conduction. https://observer.wunderwood.org/2015/09/09/transmit-audio-and-compression-with-the-elecraft-kx3/ wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Using dynamic mic on KX-3?
Dang. Replace "should leave MIC BTN to PTT” with "should set MIC BTN to PTT”. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 9, 2019, at 3:42 PM, Walter Underwood wrote: > > The Elecraft Heil Proset uses an electret mic element, so it needs bias. > Yours uses a dynamic element, so it does not need bias. > > Your adapter from DX Engineering brings out the PTT contacts separately, so > you should leave MIC BTN to PTT. > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > >> On Nov 9, 2019, at 3:13 PM, Kevin Zembower via Elecraft >> wrote: >> >> Hello, new subscriber here. Thanks for setting up this list. >> >> I'm trying to connect a Heil Pro Set Elite headphones and mic to a KX-3. I'm >> confused by what I'm thinking is conflicting advice. The Heil mic has a >> dynamic element, while the KX-3 is normally used with the MH-3 mic with an >> electret element requiring bias voltage. I'm using the HLN-AD-1-KX3 adapter >> from DXEngineering to connect them. >> >> With regard to RTFM: I found the section on page 38 regarding MIC BIAS and >> MIC BTN. I understand that I should set MIC BIAS to OFF for the Heil >> headset. I think I should also set the MIC BTN to PTT, because I have a foot >> pedal connected to the adapter. >> >> However, I'm confused by the flyer at >> https://ftp.elecraft.com/KX3/Manuals%20Downloads/E740174%20Proset%20for%20the%20KX3%20Rev%20A.pdf >> which seems to indicate that MIC BIAS should be ON, and MIC BTN OFF to >> disable all PTT switches. This indicates that the transmitter should be >> triggered only by VOX or the XMIT front panel switch. >> >> And, also confusing, I found the email thread at >> http://elecraft.365791.n2.nabble.com/Microphone-Setup-tp7609912.html which >> is for the K3. I wasn't sure if this advice for the K3 could also be applied >> to the KX-3. In particular, the note at >> http://elecraft.365791.n2.nabble.com/Microphone-Setup-tp7609912p7609921.html >> uses a MIC SEL menu option, which doesn't seem to be available on the KX-3. >> It does have lots of detailed information about settings for TX EQ which I'd >> like to use if applicable. >> >> I only have the opportunity to use the KX-3 at our club shack, about once a >> week, so I can't just turn to it and experiment. I'm also worried about >> causing permanent damage to either the radio or the headset by just trying >> things out. >> >> Any advice to clear up my confusion? Thanks for any help and guidance. >> >> -Kevin >> KC3KZ >> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to wun...@wunderwood.org > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Using dynamic mic on KX-3?
The Elecraft Heil Proset uses an electret mic element, so it needs bias. Yours uses a dynamic element, so it does not need bias. Your adapter from DX Engineering brings out the PTT contacts separately, so you should leave MIC BTN to PTT. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 9, 2019, at 3:13 PM, Kevin Zembower via Elecraft > wrote: > > Hello, new subscriber here. Thanks for setting up this list. > > I'm trying to connect a Heil Pro Set Elite headphones and mic to a KX-3. I'm > confused by what I'm thinking is conflicting advice. The Heil mic has a > dynamic element, while the KX-3 is normally used with the MH-3 mic with an > electret element requiring bias voltage. I'm using the HLN-AD-1-KX3 adapter > from DXEngineering to connect them. > > With regard to RTFM: I found the section on page 38 regarding MIC BIAS and > MIC BTN. I understand that I should set MIC BIAS to OFF for the Heil headset. > I think I should also set the MIC BTN to PTT, because I have a foot pedal > connected to the adapter. > > However, I'm confused by the flyer at > https://ftp.elecraft.com/KX3/Manuals%20Downloads/E740174%20Proset%20for%20the%20KX3%20Rev%20A.pdf > which seems to indicate that MIC BIAS should be ON, and MIC BTN OFF to > disable all PTT switches. This indicates that the transmitter should be > triggered only by VOX or the XMIT front panel switch. > > And, also confusing, I found the email thread at > http://elecraft.365791.n2.nabble.com/Microphone-Setup-tp7609912.html which is > for the K3. I wasn't sure if this advice for the K3 could also be applied to > the KX-3. In particular, the note at > http://elecraft.365791.n2.nabble.com/Microphone-Setup-tp7609912p7609921.html > uses a MIC SEL menu option, which doesn't seem to be available on the KX-3. > It does have lots of detailed information about settings for TX EQ which I'd > like to use if applicable. > > I only have the opportunity to use the KX-3 at our club shack, about once a > week, so I can't just turn to it and experiment. I'm also worried about > causing permanent damage to either the radio or the headset by just trying > things out. > > Any advice to clear up my confusion? Thanks for any help and guidance. > > -Kevin > KC3KZ > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] (OT) Ca Fires
The positive part of a power shutoff is the elimination of nearby RFI. Run from battery and you can hear the world. Unfortunately, some people have lost nearly everything. A good friend of ours lost his house in the Tubbs Fire (Santa Rosa), has moved into gtheir newly rebuilt house, and had to evacuate last week. This time, they had enough warning and a pre-organized list. He wrote an amazing graphic memoir about it. If you’d like to get a feel for how that impacted people, I highly recommend “A Fire Story” by Brian Fies. https://smile.amazon.com/Fire-Story-Brian-Fies/dp/1419735853 Our local public radio station produced a video with the first part of the story and narration by Brian. https://www.kqed.org/arts/13813960/watch-a-santa-rosa-cartoonists-a-fire-story-come-to-life wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Nov 2, 2019, at 9:05 PM, Lynn W. Taylor, WB6UUT > wrote: > > I've lived in California for a few decades. > > I've evacuated three times due to wildfires, all of them coming closer than > I'd like. > > I have never lost a single thing due to fire -- just some sleepless nights. > > The power situation (especially in PG territory) is a different story, but > one that's manageable. > > 73 -- Lynn > > On 11/2/2019 6:35 PM, Doug Renwick wrote: >> The big question is 'how much longer can Elecraft survive in California and >> have to move elsewhere". >> Doug > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
