Re: [Elecraft] KBPF3A switching frequencies and performance
Hi Russ, Your response made *very* curious so I checked out my own K3S. I can confirm the two switchover frequencies you mention (1700 and 3300kHz), but observe at most a couple of dB change when crossing the boundaries. I use an external panadapter (LP-PAN/NaP3 connected to IF-OUT) so I can easily see the same stations and noise while tuning across the boundaries. On the 1700kHz boundary the signals are a couple, maybe 3dB stronger when below 1700kHz. So it sounds to me that the filters in your KBPF3A are not being switched in when it is supposed to be used. The KBPF3 needs to be enabled (set to "nor") in the configuration menu. Have you checked that? Hmm, I neglected to carefully read the last part of your post. It sounds like your KBPF3A might be working above 4210kHz so may be just the 2 lowest bands are defective. If you look at the schematic you see that those two bands use the same filter but with some components switched in and out by another relay (K2). So that could narrow the problem down to one relay (K1) not operating. Is this a *new* problem or has it been like this since you got the K3 or installed the KBPF3A? Knut - AB2TC Elecraft mailing list wrote > Hi Ben: > You had me curious with your request. I started to check my KBPF3 > (modified to the "A") and noticed something that now bothers me. I tried > going down from 160M and it appears that the switch over to the AM > broadcast band occurs precisely at 1700,000 Kc. When I tune to 1.69 > the relays click. But the anomaly(?) I am seeing at the switchover point > is a big drop in the signal level. At my QTH during the daytime the > nominal noise level at 1700.000 Kc is about S7. When I switch to 1.69 > the noise level drops to S2. At the high end the switchover occurs at > 2109.999+ with a drop in the noise level from S9+10 to S3. I don't use > the K3 for listening to AMBCB but only in the case of checking my 160M > receiving loops with some stations high in the AM Band. I checked on 80M > and got similar results. At the low side the switch occurred at 3299.999 > with a drop in the noise level from S5 to S2. On the high side the > switchover occurred at 4209.999+ but here the noise level increased from > S4 to S6. I don't know if this helps you any on at least these 2 bands. > If I get the time I'll try to check the rest. Now I'm bothered by the > changes in signal levels at the switchover points (ignorance is bliss). > I wonder if anyone else has ever noticed this or do I have an issue with > my KBPF3? > > Russ, N3CO > On Friday, April 16, 2021, 12:39:28 PM EDT, w4sc > w4sc@ > wrote: > > Looking for details of switch over frequencies and expected performance > of the KBPF3A in its various bands, > > There is improvement in the BCB and below 500KHz with the KBPF3A enabled, > however the other SW BCB bands I have tried are lacking. > > Has anyone measured the performance of the KBPF3A? > > Ben W4SC > > 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@.qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > erusst@ > > > __ > 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 arch...@mail-archive.com
Re: [Elecraft] KBPF3A switching frequencies and performance
Hi Ben, Others with more knowledge may chime in, but here is what I know: The crossover frequencies you can find in the K3S schematic file. Here is a link to it: https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740323%20K3s%20Schematic%20Files.pdf It is the first page in the "options" segment. You can search for "KBPF3A" to find it (the file is *big*). I have not been able to find any real specifications for it. The installation manual has no specs. I also don't know if either ARRL or Sherwood has collected any data outside of the regular ham bands. In principle the K3(S) equipped with this filter should have nearly identical sensitivity anywhere from 0.1 to 30MHz. Note: the KBPF3 version has L1 installed which limits the low end to 0.5MHz. If you have an unmodified early K3 and want to use it below 0.5MHz you need to add add a bypass capacitor as described in the installation manual. Without that the bottom end is very noisy from power supply noise. I know many people are fascinated by Non-Directional-Beacons (NDBs) which are generally in that low frequency range. I have it in my K3S and find plenty of sensitivity anywhere in the range supported (0.1-29.7MHz). I don't do much SWLing anymore since the number of English language SW transmitters have dwindled over the past 10 years. It's all Internet radio these days. Are you sure you have good antennas for the bands where you think sensitivity is low? I certainly have no problem using a 102' G5RV anywhere from 0.5 to 29.7MHz for reception. I leave the tuner in bypass. Knut - AB2TC w4sc-2 wrote > Looking for details of switch over frequencies and expected performance of > the KBPF3A in its various bands, > > There is improvement in the BCB and below 500KHz with the KBPF3A enabled, > however the other SW BCB bands I have tried are lacking. > > Has anyone measured the performance of the KBPF3A? > > Ben W4SC > > 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@.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 arch...@mail-archive.com
Re: [Elecraft] K3S TX current
Hi Randy, Does your K3 #3260 have the newer MOSFET PA? I believe the K3 switched the PA from bipolar to the newer MOSFET design at some point (mine is #82!). I agree with you that the 20/30m LPF ought to be a prime suspect. Everything else is common and 14MHz should be very close to the center of the total frequency range of the transmitter. My K3S has not had any reliability problems either, but it sees fairly light duty with SSB only and no heavy duty "run mode" contest use. BTW, I checked the current draw on 30m (on the K3S) which *shares the same LP filter*. It is an average 17.5A. But 30m is lower in frequency and thus farther away from the filter cutoff. 40m, 15m and 10m LP filters are also shared with a lower frequency band, but do not cause an elevated current draw. Knut - AB2TC Randy Farmer-2 wrote > Interesting. My K3S (10175) and K3 (3260) exhibit the exact same > behavior. My K3S had a problem with low power stability on 80 meters > that resulted in field replacement of the 100W PA module, but the 20 > meter current draw didn't change. My working hypothesis is tolerance > stack-up in the 20 meter LPF, but that's just a supposition. Both radios > have been used for fairly serious contest duty, the K3 since 2009 and > the K3S since 2016, with no reliability problems. > > 73... > Randy, W8FN > > On 9/5/2020 10:20 PM, ab2tc wrote: > -- 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 arch...@mail-archive.com
[Elecraft] K3S TX current
Hi, I have recently made a discovery during a routine checkup that my K3S draws *much* more TX current on 20 m than any of the other bands. Using Data A FSKD mode at the 100W level it draws about 22A versus 16-18 A on all other bands. DC voltage from the Powerwerx SS-30DV is 14.2V as measured at the binding posts. The K3S voltmeter indicates 14.2V in receive and 13.7V in transmit mode. Current is measured with the K3S built-in ammeter (~1A in receive). Power output is 100-102W as measured with an LP-100A on all bands 40m - 10m. TX IMD is not noticeably affected as measured using the built-in 2-tone generator. I measure maybe 33dB (5th order worst case) below PEP on 40m slowly worsening to 30dB on 10m, all within acceptable limits for a solid state 12VDC powered transmitter. What's up with this? I don't know how long this has been been a "problem" as this is not something I routinely monitor. My much older K3 (with the old bipolar PA) does *not* exhibit this behavior. Is this indicative of a problem with the 20m low-pass filter perhaps? All measurements are done with a Ridge Electronics dummy load. All RF connections are tight and the LP-100A indicates 1.01 SWR on this dummy load in all cases. BTW my serial # is 10480, which is an early serial #. It was back to Elecraft twice in its first year for fixes to the transmit signal path to improve TX IMD. Knut - AB2TC PS. I am not worried about the electricity bill, but whether this is indicative of a potential future serious failure. -- 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 arch...@mail-archive.com
Re: [Elecraft] OT: RF interference from grow lights (maybe).
Hi Ralph and all, Thanks for your response and I did receive several private E-mails as well. It sounds like a phone call to the power company should be my next move. If I just could find a way to get to a live person without going through a million automated responses and interminable waits! Loose connectors and clamps can apparently cause many different types of interference so can not be ruled out in my case either. I have had several cases like that over the years and they sounded and look quite different from my current interference. But it sounds like nothing should be ruled out. Thanks again, all. AB2TC - Knut RALPH TURK wrote > Hi > I had a similar situation here in Tucson AZ My spectrum analyzer,a Tek > 492 showed groups of carrier like indications 10-20 db above the noise > floor. First think I thought "Grow Lights" I was told that the osculator > in a grow light is about 2.3 Mhz. The interference looked like it was > every 2.3Mhz up the band. Levels were all over the place. Called the > local Power Co and after lots of pleading they finally sent a tech to > check it out. He connected up to my dipole antenna and looked at the > pattern and concluded it was a ground connection proble. Got a crew out > the next week and traced it to a pole out about 2000ft from me. The > problem was radiating > from the HV line for about 2 miles. Fixed the ground and problem > solved. I had traced to one of three poles using a portable radio tuned > the my main problem freq of about 5.2 Mhz and was able to hear the > problem. The main problem was a loose ground clamp up on the pole. The > power company also used an acoustic parabolic mike which pin-pointed the > exact connector. New connector problem solved > Ralph, W7HSG/AFA9RT > >> On 08/20/2020 7:07 PM ab2tc > ab2tc@ > wrote: >> > -- 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 arch...@mail-archive.com
[Elecraft] OT: RF interference from grow lights.
Hello all, https://www.edn.com/how-cops-are-finding-grow-ops-with-am-radios/ The above is a link to an article in the EDN magazine (a technical journal primarily aimed at EEs). The article is more than five years old, but maybe it is only recently this type of interference has started to show up in upstate New York. I have one of these noise sources somewhere in my neighborhood (it’s not that easy to pinpoint due to the low frequency). I know this is OT and maybe somewhat controversial, but this type of strong interference is of great concern to the amateur radio community. I am not after anybody in my neighborhood getting arrested, but I very much want to see the interference stop. Even if the operation is legal, the emission is definitely way outside FCC part 15 limits. Quote from the article: “..conducted emission data clearly shows peaks as high as 100+ dBuV (50 dB over the limit) in the range 6 to 8 MHz, with lower peaks at 14, 18, and 21 MHz.” My interference is primarily in the 7MHz band. 14 MHz is virtually free of it. See here for a screenshot: http://www.ab2tc.com/growlights.png There are three peaks, approximately 49 to 50kHz apart. The center one is centered under the cross hair cursor. As you can see, the band is starting to come to life at about 2:30 in the afternoon. The interference is on 24/7 as far as I can tell. Does anybody have any experiences like this and/or any suggestions what to do? If you want to keep this confidential, E-mail me privately. My E-mail address is OK on qrz.com. AB2TC – Knut PS. I have previously reported power line noise to the electrical company and have had positive responses (fixes) from them. I suspect that this kind of interference is not easily detectable on their UHF based sniffers; besides I am not sure if conducted interference from residences lies under their jurisdiction (there are only residences here for many blocks). -- 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 arch...@mail-archive.com
Re: [Elecraft] [OT] contest ranking - is this a scam?
Hi Robert and all, All I know about it is that I got one like that, too, and fairly quickly deleted it. It may not be an outright scam, but it certainly didn't interest me (I am a casual contester participating most years in the major and some not so major contests). I am also not sure if an *increase* in ranking means a move toward the top or the bottom. AB2TC - Knut PS. Google does not recognize "World Amateur Radio Contesting Association". Elecraft mailing list wrote > I recently received an email from "World Amateur Radio Contesting > Association" informing me that my world ranking [in contests] had just > increased 500 or so places. This sure sounds like a scam to me, but > thought I'd check around before trashing it. Anyone know anything about > this one? Thanks > > ...robert > -- > Robert G Strickland, PhD ABPH - KE2WY > rcrgs@.net > 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@.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 arch...@mail-archive.com
Re: [Elecraft] K3s noise figure spec
Hi, Here is a quote of my response to the exact same question in 2017: "Hi, According to the ARRL review in November, 2dB! Deaf no more. AB2TC - Knut" That was from this thread: https://marc.info/?l=elecraft=149365913804929=2 There was a fairly long follow up discussion that was quite informative (e.g. the chip used is capable of much better performance in a manufacturer's test circuit, but in a practical amplifier will do slightly worse). AB2TC - Knut stengrevics wrote > Does anyone know what the preamp 2 noise figure is on 6 meters? I have > not been able to find it in the owner's manual or in Fred's book. > > Thanks, > > John > WA1EAZ Dave Sublette-2 wrote > Does anybody KNOW what the noise figure is for the 50MHz preamp on the > K3s? It isn't listed in the specifications. > > I need to know in order to make system noise figure calculations. My > feedline is going to be long (low loss, but long) and I'm trying to > determine if I will need a preamp mounted at the antenna. > > Thanks, > > Dave, K4TO > __ > 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 arch...@mail-archive.com
Re: [Elecraft] URL???
Hi Kevin, I am not sure what the problem is, but the link to "catalog.data.gov/dataset/ionospheric-digital-database" in your original post works fine here. Interesting information as always from NOAA. I don't think there is any problem sending URLs (links) to the reflector. I can't comment on how the reflector responds (or not) to E-mail sent to it as I always use other means to communicate with it. I apologize if Nabble has added ads to this response. If it has, I will abandon Nabble and find other means to respond to reflector messages. AB2TC - Knut 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. ;-) > > 73, > David - N5DCH > > > >> On Jun 26, 2020, at 7:23 PM, kevinr > kevinr@ > wrote: >> >> Is is illegal to send a URL to the Elecraft Reflector? >> >> I have tried three times thus far to send one but the email never >> appears. >> >> catalog dot data dot gov slant dataset slant ionospheric-digital-database >> >> Replace each space dot space with a single . >> >> Replace each space slant space with a single / >> >> Hopefully this encrypted form of URL will pass the censor. >> >>Kevin. KD5ONS >> >> >> __ >> 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 > david.n5dch@ > > __ > 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 arch...@mail-archive.com
Re: [Elecraft] LP-PAN2 for sale
Hello again, LP-PAN2 has been sold. AB2TC - Knut ab2tc wrote > Hi all, > > LP-PAN2 with K3 crystal (serial# 02777) for sale, asking $150 shipped > Priority Mail. Power cable included. Includes audio cable suitable for > sound > card with 3.5mm TRS socket for audio, such as Asus U5, U7 and possibly > others. Sorry, no spare sound card available here. The audio cable is the > one once offered for sale by TelePost. It's a very neat cable solution. > Paypal preferred. > > Please contact me off line. I am good on qrz.com. > > AB2TC - Knut > > > > > -- > 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 > 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 arch...@mail-archive.com
[Elecraft] LP-PAN2 for sale
Hi all, LP-PAN2 with K3 crystal (serial# 02777) for sale, asking $150 shipped Priority Mail. Power cable included. Includes audio cable suitable for sound card with 3.5mm TRS socket for audio, such as Asus U5, U7 and possibly others. Sorry, no spare sound card available here. The audio cable is the one once offered for sale by TelePost. It's a very neat cable solution. Paypal preferred. Please contact me off line. I am good on qrz.com. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] KATxxx Remote Tuner
Hi, I know nothing about BC transmitters and antennas but in our world of amateur radio solid state transmitters it is imperative that the transmission line presents a load close to 50 ohms resistive to the transmitter. The transmitter doesn't care how this is accomplished as long as it sees a good match to 50 ohms. The simplest, of course, it to have a resonant antenna (close to 50 ohms resistive - resonance is no guarantee of a 50 ohm load) and a good low loss 50 ohm coax transmission line. If the antenna is far from 50 ohm resistive, a tuner (more correctly called a matching network) is required somewhere between the antenna and the transmitter. If the actual loss of the transmission line under the mismatched condition is not too high, it's perfectly OK to have the tuner close to the transmitter. If these conditions are not satisfied, the tuner is best located close to the antenna feed point with the extra cost and effort that involves. AB2TC - Knut W2xj wrote > You can get an AT-615B from Array Solutions now and do this. I put 10 in a > club station for our various wire arrays. They do everything you need. > > BTW I disagree about this 50 Ohm antenna thing. In my world of commercial > high powered broadcasting 30 MHz and under, there are almost never > resonant, matched 50 ohm arrays. > > Sent from my iPad > >> On Apr 19, 2020, at 8:41 AM, Richard Thorne > rthorne@ > wrote: >> > -- 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 arch...@mail-archive.com
Re: [Elecraft] KX2 sluggish/intermittent VFO display
Hi, This doesn't sound like an encoder problem to me. Encoders have no memory, so if the radio eventually responds to the encoder pulses and displays the correct frequency after a delay, that delay must have occurred in the microcontroller itself or possibly in the display module if it is an "intelligent" one. To me it sounds if the KX2 microcontroller occasionally gets overloaded and sluggish in responding to inputs. Do you have anything connected to any ports, such as serial port, AUX port, etc.? Pardon my ignorance on the KX2 here but most Elecraft radios, even the smaller ones, have ports like these. I have seen in the past (maybe not with an Elecraft product) radio brought to its knees from hyperactivity on a serial port. Disconnect everything that is not essential to local (sitting in front of) radio operation and see if the problem goes away. AB2TC - Knut Lyle Johnson wrote > All encoders in the KX2 are soldered you the control panel board. > > 73, > > Lyle KK7P > > Sent from my iPhone > >> On Apr 19, 2020, at 3:57 AM, Heinz Baertschi > heinz.baertschi@ > wrote: >> >> >> Thanks Tom, interesting to know. >> >> *When troubleshooting it would still be of great help to know how the KX2 >> encoder is connected to the main bord - plugged in or soldered?* >> >> 73, >> Heinz HB9BCB >> >> >> >> Tommy wrote >>> I have seen the same on my KX2, while dialing it seems to freeze at >>> times for a second or so at a time. Even after being on only a few >>> minutes. Kind of annoying but not too worrying to me. At least for now. >>> Serial # 01927 >>> >>> 73 de Tom KB2SMS >>> >>> >>>> On 4/18/20 10:44 AM, Heinz Baertschi wrote: > -- 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 arch...@mail-archive.com
Re: [Elecraft] KATxxx Remote Tuner
Hi Rich, I totally agree with your last statement about the tuner placement. I can't answer for Eric and Wayne and I am sure they will chime in in due time. I haven't heard of any plans to introduce a weatherproofed version of any of their tuners. But the KAT500 is very easy to remote control and weatherproofing it with a suitable enclosure is not rocket science either. I have been doing this for about as long as the KAT500 has been in existence. My tuner is at the end of a 100' buried LMR400DB cable and the only other cable is 120V power. Communications is WiFI using a WiFi serial server from Lantronix. Then I just use the KAT500 utility for controlling it. There is a few pictures of the installation here: http://ab2tc.com/ I have more pictures and other information, screenshots etc, if you contact me via E-mail. My E-mail address is OK on qrz.com and it is easily guessable anyway, hi. You're mentioning controlling it via the coax. I am sure that using your coax for a MoCa link is possible but it may be more trouble than it is worth. I don't think MoCa bridges capable of withstanding 100's of watts of RF are commercially available. While MoCa doesn't intentionally use HF there might be lots of noise there interfering with your reception. AB2TC - Knut Richard Thorne-4 wrote > Eric/Wayne, > > Has there been any work done for a potential dedicated remote antenna > tuner? > > A remote tuner that could handle 500 or 1500 watts to match up with amps > power wise (Or just a barefoot K3/K4). Maybe a black box between the LAN > on the K4 or ACC on the K3 so control signals could be sent to the tuner > via the coax. > > I’m a firm believer in 50 ohm matched antennas, but if a tuner is required > it needs to be at the feed point. > > Rich - N5ZC > Sent from my iPad > __ > 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 arch...@mail-archive.com
Re: [Elecraft] K3s 400 Hz filter differences...
Hi Clay, I have a 5-pole filter with -0.85kHz offset according to the label on it. It's yours for the asking if it's any good to you. It was working when I removed it a number of years ago. AB2TC - Knut Clay Autery-2 wrote > The 400Hz filter on my Main RX is an Elecraft (by INRAD) 8-pole filter > in a Faraday cage and no offset. > The 400Hz filter I just received for my SubRX is an Elecraft (by > Vibroplex?) that is a 6-pole filter with no Farady cage AND it has a > -0.71 kHz offset. > > I called support when I saw the obvious differences, and they said, > > -- 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 arch...@mail-archive.com
Re: [Elecraft] K3 problem "ERR DLL"
Hi, Are you sure that message wasn't "ERR PLL"? Do you have the older synth? It has a PLL (phase locked loop) in it so that error message might make sense. AB2TC - Knut Ryszard Tymkiewicz wrote > Bill..the message was on K3 screen and not any PC was connected... > > 73 Rys > > W dniu 2020-01-05 o 00:37, Nr4c pisze: >> ZDLL error sounds more like a Windows thing then a radio error. >> >> Sent from my iPhone >> ...nr4c. bill >> > > __ -- 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 arch...@mail-archive.com
Re: [Elecraft] Ris: Elecraft web site off?
Hi, It works fine here in upstate NY. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] KPA500 SWR Calibration
Hi all, I am not familiar with the term "Breune" as applied to SWR bridges or directional couplers, so I Googled it. As I suspected, it applies to the single transformer design where the RF voltage is sampled by a capacitive divider. While these can be made to work adequately well when properly adjusted, the need for adjustment is a definite disadvantage. As long as the two transformers in the two transformer design are well matched (ideally identical) there is no need for any (balance or null) adjustment in this design. I am happy to see that all of the Elecraft equipment I have seen use the the two transformer design. AB2TC - Knut AJ8MH-Radio.Joe.Hutchens wrote > I know I've seen an explanation somewhere, but it's common to have > different readings between the tuner, amp and rig when connected to an > antenna. Readings seem to even out when connected to a dummy load...at > least in my case. 20 meters is my worst, and the amp will kick out at > times. > > On 11/17/2019 2:19 PM, Bob McGraw K4TAX wrote: >> Jack, et.al. >> >> Thanks, Yes I see from the circuit it is not a Breune. I have >> calibrated the indications for power and all is well in that regard. >> I just see a higher SWR that actually exists. That under certain >> conditions causes the amp to fault. I'll figure a work-a-round and >> be able to deal with it. >> >> 73 >> >> Bob, K4TAX >> >> >> On 11/17/2019 10:12 AM, Jack Brindle wrote: >>> Bob; >>> >>> The KPA500 does not use a Breune style bridge, but rather a true >>> directional coupler. It does not need to be nulled; there is no >>> adjustment. >>> >>> There is an adjustment for the power; see the PWR ADJ setting in the >>> manual. >>> >>> 73! >>> Jack, W6FB >>> > -- 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 arch...@mail-archive.com
Re: [Elecraft] K4 soundcard/CODEC
Hi all, What doesn't work correctly with Windows in the current K3S' soundcard/CODEC? AB2TC - Knut Nolan Kienitz wrote > Wayne, > > Any possibility of a future "enhanced" soundcard/CODEC that might better > accommodate Windoze for the K3? > > The current KIO3B is great, but just thinking out of the box for an > enhanced > version. > > 73, > > Nolan Kienitz > KI5IO > > > > - > 73 - Nolan Kienitz, KI5IO > - > -- 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 arch...@mail-archive.com
Re: [Elecraft] K4 and Predistortion
Hi Roger, You wrote "With the radios receiverwise reaching the physical limits it now is time to pull up the transmitter side to the state of the art as well. Regarding transmit IMD we are still in the 70s or 80s and sometimes even worse than that therefore no progress has been made the last 40 to 50 years!" I couldn't agree with you more ! BTW, there is now a new K4 group on groups.io, which is promising since the K3 group is now inundated with K4 stuff. AB2TC - Knut Roger-3 wrote > As there is a lot of buzz going around with the announced K4 and I have > seen > 1 or 2 messages on this reflector that referred to "Predistortion" I > wonder > if there is any further detail on that. I probably fall out of the regular > scheme as I couldn´t care less about the ability for remote control and > another 10 USB ports rather than predistortion. FLEX is using the customer > request for more remote control possibilities and more USB ports to hold > their 5 or 6 years ago announced predistortion on standby - at least that > is > what they say. With the radios receiverwise reaching the physical limits > it > now is time to pull up the transmitter side to the state of the art as > well. > Regarding transmit IMD we are still in the 70s or 80s and sometimes even > worse than that therefore no progress has been made the last 40 to 50 > years! > > So is there any deadline (vague or not) when predistortion will be > implemented? > > 73s Roger, DL5RBW > > __ > 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 -- 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
Re: [Elecraft] KX3
Hi, Chose instead the U5. It is slightly less money and is just lacking a bunch of fancy audio features that have no use in a panadapter. Also all the cables come out on one side which makes for neater cabling. I believe Asus has overcome its early failure problem(s). I have had mine for at least two years and no failures have been posted her for a long time. AB2TC - Knut Mark Goldberg wrote > The I/Q feeds through the PX3. You need to take the I/Q out of the PX3 and > send it to a high quality sound card, usually a USB sound card. > > If you want wideband, choose a 192 kHz card from here: > > http://www.telepostinc.com/soundcards.html > > I use a U7. > > The rig control also feeds through the PX3 and the amp to USB on your > computer. > > 73, > > Mark > > > > > On Sun, Apr 21, 2019 at 11:15 AM Tomy Ivan via Elecraft < > -- 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
Re: [Elecraft] OT (maybe): Bouvet expedition safely back
Hi again, Sorry again, I forgot to include the link to captain's message: https://bouvetoya.org/the-official-statement-of-atlantic-tunas-captain/ ABT2TC - Knut ab2tc wrote > Hi all, > > The 3Y0I expedition ship is safely back in Cape Town, thank God. I > apologize > for the OT (maybe) posting and promise I will not post any further on > the subject unless something dramatically changes (such a them setting > sail > for a second foolish attempt at Bouvet this season). > > AB2T - Knut > > > > -- > 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 -- 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
[Elecraft] OT (maybe): Bouvet expedition safely back
Hi all, The 3Y0I expedition ship is safely back in Cape Town, thank God. I apologize for the OT (maybe) posting and promise I will not post post any further on the subject unless something dramatically changes (such a them setting sail for a second foolish attempt at Bouvet this season). AB2T - Knut -- 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
Re: [Elecraft] Test
Hi Bert, Well, this one is, so you must have found a solution. AB2TC - Knut Bert Craig wrote > Test - My messages have not been appearing on the reflector. > > Bert, WA2SI > __ > 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 -- 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
Re: [Elecraft] DXCC, Remoting and Moving Around
Hi, The following snippet is from a recent posting by Ted, KN1CBR: "So what should the rules be? The WAS rule, I believe, says within a 50 mile radius. I am one QSL short of 5BWAS because NE on 10 from my side of the Continental Divide in CO has eluded me for more than a decade. I could drive to the CO/NE state line with a KX3 in the car but that would be a rule violation, so I haven't. Should there be a radius limit for DXCC as well?" Adopting the 50 mile radius for DXCC as well as WAS seems a very reasonable idea. It seems to be manageable for WAS so why wouldn't it be for DXCC, too. I wasn't aware of the 50 mile radius for WAS. I have multiband WAS all done from one location. AB2TC - Knut -- 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
Re: [Elecraft] Bouvet
Hi Rick and all, Clearly, operating your own home station from a remote location is not a problem at all, morally or legally. Operating a remote "superstation", even if domestic, from your home location (or other place) in order to add DXCC credits to your home call clearly is. So you are saying that's as long as the "superstation" is domestic, it's OK. Rules need to be changed. See Eric, I didn't end the sentence with "period". I am learning. AB2TC - Knut Rick WA6NHC-2 wrote > While the ARRL has accepted remotes as 'legal' for DXCC credit (a > dubious decision) IF the user is within the same entity as the rest of > the DXCC entries on the application, it then becomes a moral issue. > It's faster than driving around the entity for better propagation, also > entirely 'legit'; or owning several stations scattered about (also legal > for DXCC and brings up the argument of 'buying' the DXCC, ignored for > the moment). > > Ultimately, all operators must live with the moral choices they've > made... no one else can shame or praise them as much as they do to > themselves; presuming that each is honest to ones self. > > I can say with certainty that every entry in my log was made with my > radio, using my antenna(s) that I put up personally (sometimes with > assistance in this arena). Since I don't really compete against others > and my fiercest competition, is me. That is the (moral) choice one must > use; to be true to self. I refer to any DXCC standings, simply to see > how I'm doing in the overall 'game'. Using my station remotely while > traveling, doesn't affect that; it's still MY station. > > In fairness, not everyone can have a station these days (HOA, budget, > space) so there is a place for a remote station... I'm not belittling > that. But HOW it's used, is again, a moral choice. For me, having a > selection of rented stations about, just to use the best propagation, > violates my ethics. Choose wisely, you have to live with yourself. > > 73 > Rick NHC > > On 3/23/2019 3:05 PM, Don Wilhelm wrote: >> Knut, >> >> If I recall, the DXCC credit is for the location of the transmitting >> station, so if you are operating remotely, it would be the location of >> the station you are remoting into, not your control location. >> >> 73, >> Don W3FPR >> > -- 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
Re: [Elecraft] Bouvet
Hi Elecrafters, His site asks the question "is this legal?" Presumably, as far as FCC is concerned it is. But if I work Bouvet using this remote, can I really claim DXCC credit for myself for it? It would seem exceptionally unfair. Doesn't ARRL have a rule for as how far you can move from place to place and still claim accumulated DXCC credits? I find this highly troubling. I would never use this. I want my DXCC to be real (well over 200 credits from 100W (K3 of course) and a dipole at a single location). AB2TC - Knut PS. I fixed the typo in the subject line. PS. Is this expedition for real? They are heading into stormy fall weather and expect to stay on the island for more than two weeks. Do they have any helicopters? I thought the Norwegian government forbade beach landings due to the disruption if wildlife. Keith Lamonica-2 wrote > W7DXX remote is ready for Bouvet with a brand new KPA1500. (www.w7dxx.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 -- 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
[Elecraft] Possible OT: Bouvet Island again
Hi all, The 3Y0I expedition is now finally under way. I started my search for information here: https://dx-world.net/3y0i-bouvet-island/ I looked at the official web site, the Facebook page and the tracking page. Alas, I can not find much information. No equipment list, no operator list, no band plans, etc. etc. Am I missing something or are these folks extremely secretive? AB2TC - Knut PS. I am guessing if they have any Elecraft equipment we would have heard about it here. -- 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
Re: [Elecraft] Elecraft CW Net Report (OT now)
Hi Kevin, I always read the CW Net report with great interest. I think of it as the "Oregon weather report" But WOW, this is the first time I have seen any message sign off with the lyrics to one of Puccini's most famous tenor arias. Is there is a connection to the subject line here or is this perhaps the whim of your Email client? Often they sign off with some famous quote by famous people like Einstein or Churchill, etc. AB2TC - Knut kev...@coho.net wrote > Good Afternoon, > > Things got very busy for me so this moldered in my files for a few > days. However, Sunday's propagation was not special nor good. Very > weak signals, deepish QSB, and a steady, windy sound. Even on forty > meters the normal crowd was thinned. Hopefully the sun will be more > cooperative over the next year as it prepares for cycle 25. > > > On 14049.5 kHz at 2200z: > > K6XK - Roy - IA > > K4JPN - Steve - GA > > > On 7046.5 kHz at z: > > K0DTJ - Brian - CA > > K6XK - Roy - IA > > W6JHB - Jim - CA > > K6PJV - Dale - CA > > > Until next week 73, > > Kevin. KD5ONS > > > Nessun dorma! Nessun dorma! > Tu pure, o Principessa, > nella tua fredda stanza, > guardi le stelle > che tremano d'amore, e di speranza! > > Ma il mio mistero è chiuso in me; > il nome mio nessun saprà! > No, No! Sulla tua bocca > lo dirò quando la luce splenderà! > > ... > > Dilegua, o notte! > Tramontate, stelle! > Tramontate, stelle! > All'alba vincerò! > Vincerò! Vincerò! > > _ > > __ > 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 -- 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
Re: [Elecraft] OT: Metric system
Hi again, Hopefully Eric will find it in his heart to let this thread continue. Yes, we are. Booze and wine are now sold by the liter. Curiously beer is generally not. In my opinion gas stations should be the next in line to convert. I am sure modern pumps could easily be reprogrammed to display liters instead of gallons. To the uneducated the price per liter would look like a bargain. Wow, less than a dollar! I don't think super markets would encounter a huge cost converting from lbs to kilos either. Probably the road signage would be the biggest cost problem. AB2TC - Knut k6dgw wrote > Yep, we're going metric ... inch by inch. > > 73, > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > > > > > > > > On 2/25/2019 2:12 PM, Jim Rhodes wrote: >> Well we first authorized use of the metric system in 1866, we are working >> on getting around to it. Don't rush us! >> >> > > __ > 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 -- 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
Re: [Elecraft] OT: Metric system
Hi all, I am sorry, Eric, but I want add another comment to this. I was raised and educated in Norway which I believe is one of the original signatories to the metric system. I have come to deal with the non-metric units common here since I moved here and I don't find it a big problem. But I have to correct what I believe is a misconception (that the US hasn't adopted the metric system). NIST, the federal organization responsible for metrology in the USA is *totally* committed to the SI system which is the current formal definition of the "metric" system. I think what sets the US apart from most other nations is that SI units are not mandatory in commerce. The US units of ounces, gallons, Fahrenheit, inches, feet and miles are defined by NIST as derivatives of their SI base units, and are obviously allowed in commerce. So, should the US commit itself to mandate the use of SI units for all commerce and signage? I don't know. It would be costly for sure. AB2TC - Knut Mike Markowski-2 wrote > Just for correctness, it's not 2 African countries but Liberia and > Myanmar. > I can only guess that there is no economic incentive for the US to switch. > Money talks, as they say... > > 73, > Mike ab3ap > > > On Sun, Feb 24, 2019, 6:17 PM Ken G Kopp > kengkopp@ > wrote: > >> Sadly, only -three- nations remain non-metric. The U.S. and two African >> countries. Shameful! >> >> 73 ! >> >> K0PP >> __ >> 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 >> > __ > 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 -- 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
Re: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching
Hi, It doesn't "compound". A 10Hz drift at the antenna output of the K3, will be reflected as a 10Hz drift at the output of any transverter, be it VHF, UHF or microwave. At the higher frequencies even a transverter with an OCXO its drift would probably dominate. AB2TC - Knut Wes Stewart-2 wrote > You should be subscribed to Timenuts. > > But clearly one of us is confused. If you're using an OCXO in your > transverter > and up converting the K3, how does K3 drift/inaccuracy "compound" at UHF? > > Can you read that watch to 50 ms? What are you going to do when WWVB goes > QRT? > > Wes N7WS > > On 1/23/2019 12:26 PM, Dave New, N8SBE wrote: >> >> Wes, >> >> Yes. I'm a stickler for accuracy. It always bothered me that the > -- 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 arch...@mail-archive.com
Re: [Elecraft] Auto-spot, tuning aids, and the arcane history of CW pitch-matching
Hi all, Agreed; the problem can easily be solved in analog radios without frequency synthesis by offsetting the BFO frequency by those 700Hz or so in transmit. In down conversion machines with a single IF in the 8-9MHz range that could easily be done by pulling the BFO crystal. The Drake TR4 undoubtedly worked this way. I bought my first transceiver in 1969 (I think), a Yaesu FT-200, I think it was called in the US. In Europe it was sold as Sommerkamp FT-250. As the Drake TR4 it was down conversion with a single 9MHz IF and worked CW by pulling the BFO crystal into the passband of the 9MHz crystal filter on transmit. Another technical solution, which was used in the Collins KWM2 (and probably KWM1) was to keep the balanced (de)modulator balanced and inject an audio tone into it on transmit. Clearly the spectral purity of the CW signal would be less than ideal in this case, but I am not sure if FCC type approval was needed in those days. Nor am I sure what the the FCC spec for "inband" (read close in) spurs would be. AB2TC - Knut n0uk wrote > The transceive problem didn't seem to exist on any older non-synthesized > transceiver that I have used, including FT-101 series, TS-520/820 and > later, KW Electronics KW-2000E. these were all '70s era transceivers. > > > > -- > 73 Chris Cox, N0UK, G4JEC > chrisc@ > > _ > -- 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 arch...@mail-archive.com
Re: [Elecraft] KPA500 & Drake TR7
Hi again, I totally mangled the 2nd statement. Corrected below. Knut ab2tc wrote > Hi again, > > True, but the TR7 is all solid state, including the finals. See here: > > http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-01.htm > > According to that article Drake claims 130-150W output for 80 and 40m and > 90-100W on the higher bands. > > Boy, is that transceiver ever jam-packed! Wonder how it does cooling-wise. > > AB2TC - Knut > -- 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 arch...@mail-archive.com
Re: [Elecraft] KPA500 & Drake TR7
Hi again, True, but the TR7 is all solid state, including the finals. See here: http://www.wb4hfn.com/DRAKE/DrakeArticles/InsideTheTR7/Inside_The_TR7-01.htm According to that article Drake claims 130-150W output for bands at above 20m and 60-100W on 80-15m. Boy, is that transceiver ever jam-packed! Wonder how it does cooling-wise. AB2TC - Knut K9MA wrote > On 1/13/2019 12:35, ab2tc wrote: >> With typical efficiencies seen in solid state PAs it is probably rated at >> no >> more than 100W output, > > Actually, tube amplifiers can be quite a bit more efficient than solid > state ones. The theoretical limit for class B is around 70 percent, a > practical limit probably around 60. So, the TR7 might put out 150 W. > > 73, > > Scott K9MA > > -- > Scott K9MA > k9ma@ > > -- 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 arch...@mail-archive.com
Re: [Elecraft] KPA500 & Drake TR7
Hi Marcel and Don, The TR7 is rated at 250W *input*. See here: https://www.universal-radio.com/catalog/hamhf/tr7.html With typical efficiencies seen in solid state PAs it is probably rated at no more than 100W output, so the KPA500 should give you noticeably more power. Anyway, Don's suggestion to use a constant (but variable) negative voltage applied to the ALC input of the TR7 should work. Make sure that it is well filtered, as any noise or hum will (AM) modulate the RF signal. AB2TC - Knut Don Wilhelm wrote > Marcel, > > Can you add a "Power Control" to the TR7? > It may be as easy as applying a constant negative voltage to the ALC > input. That constant ALC voltage will not cause the problems > encountered when using the dynamic ALC voltage that is applied from the > amplifier. > > 73, > Don W3FPR > > On 1/12/2019 12:59 PM, Marcel Jorba via Elecraft wrote: >> Greetings from Barcelona >> I have here a K3-KPA500 setup that runs great >> I also have a TR7 and I am thinking about using it together with the >> KPA500 The obvious problem: The TR7 delivers a lot of watts (200 pep). >> Is it an idea to discard? Or is there any reasonable approach to? ALC >> control is not a good idea I think >> As an alternative (500-1000 W), is there any small (in size) linear to >> consider? I don't want to go back to the big tube linears. The KPA500 is >> great for what I want to have here. >> 73s de Marcel - EA3IN > -- 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 arch...@mail-archive.com
Re: [Elecraft] New tuning knob for the KX2
Hi all, Tactile feedback from the VFO knob? Absolutely no, no, no!! The VFO knob should feel like the old analog VFO and with 10Hz step size it does. No changes please!! AB2TC - Knut Bill Frantz wrote > What I would really like for fine adjustment, e.g. one step when > tuning weak RTTY, is tactile feedback from the knob. A slight > bump for each time the VFO changes by one tuning unit. Note that > in today's radios, tuning is not continuous, it is digital, and > knowing when you have moved the VFO is useful. > > I use the M memories for switching between CW, Data A, RTTY, and > SSB. No memories left. (I consider a good day on the air is one > where I have digital, CW, and voice QSOs.) > > 73 Bill AE6JV > > On 1/8/19 at 11:22 AM, > donwilh@ > (Don Wilhelm) wrote: >> -- 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 arch...@mail-archive.com
Re: [Elecraft] K3 power amp 2SC2782
Hi Wes, Agreed. In my view FETs are a mistake at the 14V level. The old K3 bipolar PA is much better (but still not good). Knut - AB2TC Wes Stewart-2 wrote > I have not observed a low power issue in my K3. OTOH, in my experience > the K3S > PA has been a huge disappointment. One reason for buying a K3S was a hope > that > the TX IMD would be improved with FETs. This would no doubt have been > true if > Elecraft designed the radio for 50 VDC. > > Wes N7WS > > On 1/5/2019 3:16 PM, K9MA wrote: >> I've always felt that the KPA3 in my K3 was marginal. For example, I've >> never > -- 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 arch...@mail-archive.com
Re: [Elecraft] K3 power amp 2SC2782
Hi again, One thought: What is your firmware version? I now remember that there was one version that had a problem delivering full power on 15m only. This has long been fixed. Make sure you have the latest. AB2TC - Knut ab2tc wrote > Hi, > > How are you measuring your actual output and in which mode are you testing > it? I have a K3S and a K3 souped up to near K3S but still with the > original > -- 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 arch...@mail-archive.com
Re: [Elecraft] K3 power amp 2SC2782
Hi, How are you measuring your actual output and in which mode are you testing it? I have a K3S and a K3 souped up to near K3S but still with the original transmitter chain. I have no problem achieving 100W with either one of them into a factory calibrated LP100A, testing it in FM mode. Overall I think the original KPA3 with bipolars is at least as good a transmitter as the new FET-based KPA3A. The transmitter chain in the K3S has been "recalled" twice in order to improve the 3rd order IMD. The original KPA3 has remained unmodified as far as I know. Heve you done the wattmeter calibration based on a wattmeter you trust, such as the LP100A (by Telepost.inc) and have you done the TX gain calibration? A properly functioning K3 or K3S should have no problem achieving 100W provided the power supply is making 13.8V or more *at the transceiver*. AB2TC - Knut K9MA wrote > I've always felt that the KPA3 in my K3 was marginal. For example, I've > never been able to get more than about 80 W out of it on 15 meters. (And > that's at about 14.5 V) Is the KPA3A any better? > > 73, > Scott K9MA > > On 1/5/2019 15:23, Robert Friess wrote: >> Hank, > -- 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 arch...@mail-archive.com
Re: [Elecraft] Phantom signals
Hi again, But if they are fixed (not following the tuning of the K3) you should be able to tune to them and hear them in your K3 without any computers or SDRs running. So Don's advice to turn everything except the K3 off seems sound to me. AB2TC - Knut Don Wilhelm wrote > Pete, > > Any chance you can borrow a P3 to see if those spurs are present both > with and without the computer? > That would be a good test if you can manage it. > > The other thing that may help is to bond the K3 to the other gear, > following the paths of the IF out coax and also the audio cables. Bond > from box to box rather than trying to "ground" everything to a single > point (which may cause additional noise pickup. Use the information on > that subject from Jim Brown K9YC. > If everything else other than the K3 is plastic cased, bond to BNC > connector shells and/or computer I/O connector jackscrews. > > 73, > Don W3FPR > > On 11/27/2018 9:44 PM, N4ZR wrote: >> >> Trouble is, my computer supplies N1MM+, including its spectrum >> display. Catch 22 >> >> > -- 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 arch...@mail-archive.com
Re: [Elecraft] Phantom signals
Hi, Absolutely no sign of any of these spurs here with my K3S. Since they are at constant frequencies they must be coming in through the K3 front end (*not* at the IF level). So either your K3 front end is generating them (which it shouldn't) or they are present in your environment. Again, since they are at constant frequencies, the P3 or any other SDR connected to the K3 IF output should not be the culprit. Send me an E-mail and I will give you spectral plots collected with LP-PAN/NAP3 with K3 connected to a well shielded dummy load. AB2TC tomb18 wrote > This is pretty common. One thing that can help is to wrap your USB cable > through an ft241 31 to rid. About 6 turns gets rig of lots of picked up > garbage. 73 Tom > > > Sent from my Samsung Galaxy smartphone. > Original message From: Fred Jensen > k6dgw@ > Date: 2018-11-26 6:14 PM (GMT-05:00) To: > elecraft@.qth > Subject: Re: [Elecraft] Phantom signals > I have a clean carrier at 7039.6, about S4, but nothing on 20. It's > pretty hard to build a double conversion superhet that doesn't have a > few weak spurs. > > 73, > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > On 11/26/2018 2:20 PM, N4ZR wrote: >> I recently started using N1MM+'s spectrum display with my K3, and it >> made me notice that I have some phantom signals on the display. >> Specifically, there are steady carriers at 14039.6 and 28039.6. Each >> of these carriers has "sidebands" spaced 1 KHZ apart on either side. >> There is a slight AC roughness to the tones as heard in CW mode, >> particularly on 20M. On 7039.6 and 21039.6 a single carrier is >> audible, much weaker than on 20 or 10 meters. >> >> Disconnecting the antenna from the K3 does not affect these signals, >> nor does disconnecting my Airspy HF+ from the IF Out jack. >> >> Any idea what these might be? Because they are discrete frequencies >> and relatively weak, they aren't particularly an operational problem, but >> >> 73, Pete N4ZR >> Check out the Reverse Beacon Network >> at http://reversebeacon.net;, now >> spotting RTTY activity worldwide. >> For spots, please use your favorite >> "retail" DX cluster. > > __ > 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 > tomb18@ > __ > 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 arch...@mail-archive.com
Re: [Elecraft] (OT maybe) 3Y0I Bouvet using K3's?
Hi David, Best of luck with getting up a good receiving antenna for the expedition. Is that one for 20m which is probably the most likely the best chance for getting this ATNO? When the Peter I Island (in the same general area) expedition was out there, I could hear nothing but a whisper from them (and as the saying goes, if you can't hear'em you can't work'em, and sure enough I didn't), but I do have better antennas now for points south. I kind of reckon that if I can't hear them with my regular transmitting antennas, they won't hear me with my 100W on the same antennas either. So I have never bothered with erecting special receiving antennas. I don't have the acreage for it either. But I am crossing my fingers that this DX-pedition will succeed (and be heard up here with no exceptional receiving antennas). AB2TC - Knut David Olean wrote > Darn! I better get going on a new beverage for 140 degrees or so. I have > one at 180 and another at 100 degrees, but neither is optimum. I had a > temporary one last season for the aborted Bouvet DxPedition, but I took > it down as it was in the way for mowing my field. It was only 4 ft off > the ground. I could find no date when they were to be QRV, but if they > are in ZS Africa it must be really soon. Ground has not frozen yet. > > Dave K1WHS > > > On 11/17/2018 8:16 PM, ab2tc wrote: -- 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 arch...@mail-archive.com
Re: [Elecraft] (OT maybe) 3Y0I Bouvet using K3's?
Hi again, Wow! I wonder why the secrecy? I understand this is a low budget expedition, but logging on to the Internet while they are still in Cape Town can't be that expensive. On the equipment question, I am guessing they are not sponsored by Elecraft. Maybe they are using their own personal rigs. In a previous message in this thread it was suggested that at least one of the team members had acquired a 2nd hand K3(?). AB2TC - Knut John Harper wrote > It has been implied that their official announcement will be the first CQ > from 3Y. Also, the trip from ZS to 3Y will take 12 days according to their > team leader. I'd bet that they have already left and are en route. > > John AE5X > https://ae5x.blogspot.com > _ > -- 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 arch...@mail-archive.com
Re: [Elecraft] (OT maybe) 3Y0I Bouvet using K3's?
Hi all, This DX-pedition must be one of the best kept secrets in town. I was able to find their web site: https://bouvetoya.org/ But concrete plans are still very elusive. Apparently the team has arrived in South Africa and they have a ship on hand. No date has been set for their sailing as far as I can see. The team members are now known. There are no Norwegian team members which is a shame for a team whose members proudly wear the Norwegian flag on their T-shirts. Nothing is known about their equipment. It is not even clear if they have any corporate sponsors. But welcome they are. Hopefully their plans will firm up soon. I will have to inspect my South facing 20m Delta loop which will surely be needed. South is my worst direction as I am living on a North facing hill. Bouvet is an ATNO for me. AB2TC - Knut (native of Norway) John Harper wrote > Anyone know if the upcoming (later this month?) Bouvet team is using > Elecraft gear? > > John AE5X > https://ae5x.blogspot.com > -- 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 arch...@mail-archive.com
Re: [Elecraft] KAT500 as a remote-controlled tuner
Hello again, again On advice from Raymond Sills I try again: ab2tc - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] KAT500 as a remote-controlled tuner
Hello again, I am not sure why my link doesn't show as such (underlined) ; I try again: ab2tc.com ab2tc - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] KAT500 as a remote-controlled tuner
Hi all, I am more than happy to chime in. Since I do not run power, I have it easy. No amplifier control to worry about. I do not attempt to extend the aux cable to the remote site either. It is entirely controlled using the KAT500 utility over the serial port which is remoted over a Wifi to serial bridge, a Lantronix Wibox. I forget what the model number is. A "wibox" Google search should reveal the model number. You can view a couple of pictures of the installation here: ab2tc.com AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] Avoiding costly lightning damage to your radios gear
Hi, It's a dead short circuit for DC and low frequencies thanks to the SWR bridge (it has a voltage transformer directly across the antenna terminals). There seems to be different opinions on what is meant by "static". To me it means a slowly varying DC voltage caused by static buildup in the clouds during or before thunderstorms. The K3(S) is perfectly protected against these. Some people include the transients that are caused by actual lightning strikes nearby in the definition of "static". The K3(S) is not protected against these as they have very strong high frequency content. For these extra protection is needed as discussed several places in this thread. I have a number of Alpha-Delta switches in my antenna system and they have gas discharge tubes, but frankly I have no idea how effective they are. AB2TC - Knut wayne burdick wrote >> On Oct 30, 2018, at 12:50 PM, Fred Jensen > k6dgw@ > wrote: >> >> Does my K3 have a static bleed across the antenna terminal(s)? > > Yes. > > Wayne > N6KR > -- 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 arch...@mail-archive.com
Re: [Elecraft] Picture of 3 by 5 card solution for K Pod cheat sheet
Hi Don, This is sent via Nabble. You'll see your posting below as a quote. The Quote button is very visible above the text area to the left. The quote is easy to trim. I find Nabble very convenient for responding to messages. AB2TC - Knut Don Wilhelm wrote > Because many read the posts on Nabble and it is difficult to add a bit > of information to indicate what they are referring to. Those posters > might just as well talk into the wind, without context for reference, > the subject line is not sufficient. > Same with call signs shown in your email address. > To help everyone else, please sign you emails. > > 73, > Don W3FPR > > On 8/30/2018 10:43 AM, W2xj wrote: > -- 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 arch...@mail-archive.com
Re: [Elecraft] K3s audio on the USB cable vs line out audio
Hi Bill, For all practical purposes the choice will make no difference to the audio quality. Either option will certainly be vastly better than picking up the K3 audio with a microphone. The USB option is just a bit more convenient since you can can combine audio and rig control in one cable. AB2TC - Knut Bill DeVore wrote > I'm trying to mix my K3s sidetone audio with Skypes audio out by using a > software mixer called VoiceMeeter. This will eliminate the mic on my Skype > camera trying to pickup the audio coming from the K3's speaker and > hopefully eliminate most of the audio artifacts. Does it matter where I > pick off the audio? The Elecraft manual seems to indicate the USB cable is > a better choice but wonder if line out will work as well > > Bill - W3PNM > __ > 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 arch...@mail-archive.com
Re: [Elecraft] WWV/WWVH Closure
Hi, Just copy and paste the entire link. I am in and counted. WWV possibly closing! What a horrible thought! What are we going to do to check our radios' calibration? AB2TC - Knut NK7Z wrote > Mail wrapping cut off the end for you... > > 73s and thanks, > Dave (NK7Z/NNR0DC) > https://www.nk7z.net > ARRL Technical Specialist > > On 08/19/2018 11:08 AM, Clay Autery wrote: >> Error 404 on that link... >> >> __ >> Clay Autery, KY5G >> (318) 518-1389 >> > -- 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 arch...@mail-archive.com
Re: [Elecraft] [K3] SWR - Numerical Indication
Hi again, Oops I accidentally sent the message without the context quote. Get a good dummy load and you will get the indication "1.0 - 1". I have both the K3 (souped up to near K3S) and the K3S and they both do it. You are not confusing this with with 1.1, are you? AB2TC - Knut Dick Dickinson wrote > I've noticed that I'm not showing a reading of less than 1.1:1 SWR on my > antennas per K3 SWR Numerical Readout. K3EZ will record 1.0:1 SWR in band > sweeps. > > Can the K3(S) Numerical Display show 1.0:1 SWR? If so, is there a likely > reason why K3EZ will show 1.0:1 while my K3 will only go as far down as > 1.1:1? > > > Dick - KA5KKT > > -- 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 arch...@mail-archive.com
Re: [Elecraft] [K3] SWR - Numerical Indication
Hi, Get a good dummy load and you will get the indication "1.0 - 1". I have both the K3 (souped up to near K3S) and the K3S and they both do it. You are not confusing this with with 1.1, are you? AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] Survey and summary: Elecraft K3/K3S panadapter solutions
Hi, None of you buddies have heard of LP-PAN and NaP3? No RF splitter needed and NaP3 takes care of all the frequency offsets caused by the bandpass shifting on the K3(S). The latest versions of NaP3 even have cluster spots displayed. AB2TC Knut William Liporace - WC2L wrote > Great information!! The Airspy & N1MM+ Spectrum display is pretty cool. > It is radio independent (K3, FTdx500, etc). The cost is $200. It is > dead easy! My guess the Flex guys used the software included. > > So about 12% of the teams used the Airspy HF+. My guess is that you had > most of them were using N1MM+. I would also like to know who was using > what (radios, software, etc). I have not looked at the web site. If I > remember someone did a list for WRTC 2014. > > I like the Win4K3 suite. For me the missing part is the ability to > include the Airspy HF+. I don't use my P3... It will more than likely go > back into the box. > > Will WC2L > -- 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 arch...@mail-archive.com
Re: [Elecraft] Anyone near an FM station on ~97.1
Hi, Let's do the math. The K3(S) has an IF frequency of 8.215MHz. So when you listen to, say, 21.4, the synth is generating 21.4 + 8.215 = 29.62MHz. Multiply this by 3 and add the 8.25.MHz and you get 97.06MHz! The K3's mixer has a *very* strong response to the 3rd harmonic of the LO since it is essentially a square wave. The responsibility for removing this spur is entirely with the HF filter which evidently does not have enough suppression to totally reject this extremely strong signal. Do you have the tuner in the K3? Turning it on would probably help since it is low pass in nature. An external auto tuner should also help. Your ICOM radio probably is an up conversion radio so would not have this particular problem (responding to odd harmonics of the LO). AB2TC - Knut W9RE wrote > I have had an interference problem on the top part of 15 meters (21380 to > 21450) from an FM station 1 mile from my house whose frequency is 97.1Mhz. > It peaks about S6 and is quite noticeable with only coax connected and no > antenna selected. I have (2) -K3 and it is present on both. I installed > new synth boards in one but the interference is still there. It sounds > like > a very broad FM signal. I had the station engineer do a spectrum search > and > he found no issues. I do not find this interference on an Icom radio. > > > > Has anyone else experienced this and if so have you found any solutions? > I > did a check of just the K3 (a year or so ago) on battery power and no > other > connections and it was still present although much weaker. > > > > Thanks, > > > > Mike W9RE > > > -- 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 arch...@mail-archive.com
Re: [Elecraft] Elecraft earns yet more respect
Hi again, I forgot to mention that lots of other people, maybe most users, do use high power and will be interested to know if there is an arcing risk in their tuners, and what can be done about it. AB2TC - Knut ab2tc wrote > Hi Rick, > > I am curious as to what mods you had performed: > > "It is repaired, UPDATED with all current mods (including moving the wires > that > arced to a different configuration) and is undergoing rigorous testing." > > I am running barefoot so arcing is not likely and I do not have any > immediate plans to get an amp, but I wasn't aware there were any mods done > to it. > > AB2TC - Knut > -- 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 arch...@mail-archive.com
Re: [Elecraft] Elecraft earns yet more respect
Hi Rick, I am curious as to what mods you had performed: "It is repaired, UPDATED with all current mods (including moving the wires that arced to a different configuration) and is undergoing rigorous testing." I am running barefoot so arcing is not likely and I do not have any immediate plans to get an amp, but I wasn't aware there were any mods done to it. AB2TC - Knut Rick WA6NHC-2 wrote > My KAT500 had an arc between two jumpers atop the PC board, in the > middle of the KH1 DXpedition rendering it inoperable. I had to switch to > a manual tuner and switching arrangement (ugh!) while I sent it to > Elecraft. > > Some of the damage was a burned PC board and traces as well as the two > jumper cables. > > I received a phone call this morning from the tech working on it. It is > repaired, UPDATED with all current mods (including moving the wires that > arced to a different configuration) and is undergoing rigorous testing. > It will be shipped in a couple days. > > Total bill to me: ONE hour of shop time. Faced with possible > replacement, this price alone is well worth it but when you add that > it's been updated, priceless. > > I have to retrain it to the antennas; no problem, I saved the > configuration and expected this to happen. I'll run through retraining > anyway. > > > I tell most folks that if they do me right; I'll sing your praises to > high heaven. Do me wrong and I'll make sure there is NO place you can > hide. > > Elecraft: Once again, you've done good. Thank you. THIS is the > business model to follow. > > > Rick WA6NHC > -- 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 arch...@mail-archive.com
[Elecraft] OT: Re: Baker Island - Tnx Elecraft!
Hi, I have a similar experience. Tried several times the first few days and got frustrated. Then last night I figured I'd try one last time before they pack up. Lo and behold, shortly before midnight EDT they started coming out of the fog at 14210 with a fixed QSX of 14225. So I started calling and after about an hour they came back to AB2... One more update to the call and and a response and I was done with an ATNO! Just 100W and a G5RV here. No HOA or antenna restrictions here but there are too many trees to put up a tower. I have several resonant dipoles and a delta loop for 20m but the G5RV is almost always better. AB2TC - Knut Elecraft mailing list wrote > As there are only one or two days left before the KH1 crew packs up and > leaves Baker Island, I thought I’d post this in hopes that other > antenna-restricted hams don’t think they have no shot. I live in a CC / > HOA “no ham antenna” neighborhood. However, I DO have several stealthy > wire antennas strung through the trees in our yard. My 60-6 meter antenna > is an 88 foot long doublet, about 45 feet high, fed with 110 feet of home > brew 600 ohm ladder line. I also have a Hustler 5BTV ground mounted that I > use for diversity receive. My primary station is a K3 / P3 combo, 100 > Watts max. > > I had tried working the DX-petition on several evenings, usually on 20 or > 40 meter CW. The pileups were horrendous. I knew I was duking it out with > guys running mega antennas and a LOT more power than me, so I didn’t have > much hope after the first few evenings. Usually went to bed with a > headache and frustration. Last night was different. > > After an evening of TV with the XYL, I thought I’d give it another try. > Listened on 20 and I could hear them, but just barely at the noise level; > not loud enough to try calling. So I jumped up to 30 meters. Wow - the KH1 > station was great copy at close to S7! And the pileup was once again > monumental. Well, using the P3 I found a nice “hole” where it seemed like > there were no other signals. Took about 15-20 minutes and bingo: W6JHB > 599 K. Yes! In the log for an ATNO! > > My hats off to the great ops at KH1/KH7ZZ and to the Elecraft developers > for the fine rig. Having the K3 and the diversity receive capability > certainly helped offset having to use crummy antennas and “low” power. > > If I could work ‘em, so can you! > > Yeah, I know - being on the west coast helps! :-) > > Jim Bennett / W6JHB > Folsom, CA > __ > 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 arch...@mail-archive.com
Re: [Elecraft] Filters
Hi, You don't have to do any math to do this. Just go to shift/width and change the width one click (either direction.). Then switch back to HiCut/LoCut. To reverse the process, do the same thing again. AB2TC - Knut Joe Subich, W4TV-4 wrote >> One question: On my K3S I cannot set the LO CUT to .35KHz it only >> steps in .10 increments not 0.05 increments is there some CONFIG >> item I need to change? > Temporarily switch to Shift/Width and set Shift to a value that, > when divided by two results in a value of X.X5. Now switch back > to Hi/Lo ... those value will end in X.X5 and step in increments > of X.10. > > 73, > > ... Joe, W4TV > -- 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 arch...@mail-archive.com
Re: [Elecraft] Filters
Hi Bill, For SSB use the LoCut/HiCut mode. Set LoCut for 300Hz and HighCut for 2700Hz initially. That gives you comfortable audio when there is no serious QRM. If QRM from above in frequency bothers you, crank the HiCut down to 2400Hz or even 2100Hz. If you have narrower crystal filters, like 2100Hz or 1800Hz they will switch in automatically. Don't touch the FL button. If you have QRM from below (assuming USB) unfortunately there isn't much you can do. As Don says (in a different thread), cutting the lows much above 300Hz quickly affects intelligibility. Lowering the HiCut also lowers the noise floor of the receiver if you are listening to a signal in the noise. AB2TC - Knut Cady, Fred-2 wrote > Hi Bill, > > Adjust the lo and hi cut filters to make the signal you are listening to > sound good (in the absence or QRM). In a crowded band with QRM on either > side, adjust either the lo or hi cut to reduce or eliminate the > interference. Note that the lo and hi refer to audio frequencies. If an > interfering station has a higher pitch, adjust the hi cut; lower pitch the > lo cut. You shouldn't consider these controls to be set and forget. They > can be changed to meet changing reception conditions. > > Lo and hi cut have no effect on your transmitted signal. > > > Cheers and enjoy the K3. > > Fred KE7X > > > For all KE7X elecraft books, see www.ke7x.comhttp://www.ke7x.com; > > > > > From: > elecraft-bounces@.qth > > elecraft-bounces@.qth > on behalf of Bill < > 1lasportsman@ >> > Sent: Saturday, June 30, 2018 6:07 PM > To: > elecraft@.qth > Subject: [Elecraft] Filters > > I recently purchased a K3 and trying to set up for SSB.I do not do code. > Is there any recommended settings for the shift lo cut and width? > It has the KFL3A-400 and the KFL3A-12.8 8 pole filters installed > I have read the manual and it does not really help me. > Thanks > Bill > W3WGG > > > 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@.qth > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to > fcady@ > __ > 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 arch...@mail-archive.com
Re: [Elecraft] K2: The green glow returns!
Hi, Good job, Wayne. Keep up the good work. The K2 is a very interesting transceiver. I might order one just to have something interesting to do in retirement. I would have to invest in a magnifying lamp and a card holder, though (not a problem). Now if I could just find a way to make my hands steadier. AB2TC - Knut wayne burdick wrote > A few years ago, in a distant land known for its modular seafood > delicacies, one of our vendors decided--without informing us--to stop > producing a critical item used in the Elecraft K2: the LCD backlight. We > got the news when we attempted to re-order early this year. > > Worse, they could never make them again. Both the dusty scrolls upon which > the details were scribed and the monks who toiled in the secret factory > had vanished. We would have to reinvent this particular wheel. > > That task has now been completed; we home-rolled our own backlight from > modern materials. We’re pleased to announce that the new green glow is the > equal of the old. Thus the K2 is reborn, on approximately the 20th > anniversary of its first beta shipments. It’s in stock and ready to > exercise kit-building muscles of all ages. > > Why build a K2? To summarize what our thousands of builders have told us: > > - it’s fun, and the fun can be shared (with one’s progeny, for example) > > - educational (you’ll learn a *lot* about how a radio works) > > - rewarding (it’s still the only high-performance, all-band HF kit > radio) > > Regarding the K2’s performance, you may have read recent enthusiastic > Field Day reports from its owners. This is no coincidence. The K2 was bred > for success at battery-powered field outings, with both ultra-low current > drain (~150 to 200 mA) and high blocking dynamic range (it’s one of very > few low-cost transceivers to hit the magical 135 dB level, allowing > co-located rigs to play fair). The K2 is also an analog superhet design, > with crisp audio and very fast QSK. > > This is a great time to embark on a K2 adventure, given various specials > in honor of summertime and the K2’s reemergence. You can find these > specials on our order page (www.elecraft.com/elecraft_prod_list.htm). Or > give us a call to talk about which K2 package would best suit your needs. > > A K2 can be upgraded at any time by installing your choice of several > option modules. No particular order is required. The most popular options > are the wide-range ATU (KAT2) and SSB module (KSB2). > > If I’ve left any of the K2’s technical or philosophical mysteries to your > imagination, feel free to email me directly. > > 73, > Wayne > N6KR > -- 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 arch...@mail-archive.com
Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island
Hi, Folks, I am working with several people off line to try to find a solution to the problem. Let's not continue the discussion here as it it is sure to annoy a number of people. AB2TC - Knut C - Knut FWIW, as of about 1730Z, there appears to be a widespread Internet outageaffecting Comcast and Spectrum customers, among others: Comcast and Xfinity Facing a Nationwide Outage [Update: Company Confirms] - Slashdot -- 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 arch...@mail-archive.com
Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island
Hello, I tried the link again, but it still does not respond. I wonder if it is a FIOS problem (again). Let's not discuss it here. It's unfortunate because I really detest most of the stuff on the Facebook page. It's as bad as eham.net. There is no moderation, nobody gives their call, and it's mostly people yelling at each other. AB2TC - Knut Eric Swartz - WA6HHQ, Elecraft wrote > Hi Jim, > > The link you posted goes to another of the official baker sites, but it is > not > posting up to the minute status there. > > I just checked it, and the link to > > http://kh7z.net/ > > is working here and has the latest info. > > Updated this morning from that page: > > --- > June 29 1100z Update > June 29, 2018 by kc1cwf > -- 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 arch...@mail-archive.com
Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island
Hi Eric and all, The kh7z.net link doesn't work for me. It seems to reach the site, but then times out trying to connect. Anyway, the message you quoted is also present on the Facebook site. I don't like Facebook but unfortunately that seems to be the choice of current DXpeditions. AB2TC - Knut Eric Swartz - WA6HHQ, Elecraft wrote > Also look at: http://kh7z.net/ > This appears to have the most real time official info. > > They are running all K3S transceivers and KPA500's on all HF bands except > 160, > where they are running a KPA1500. > > From kh7z.net : > > A Rough Night -> Standby for Uploads – Weather: 1, Operation: 0 > June 28, 2018 > > We did get 3 stations up and running last night, one day ahead of > schedule. > > They say it never rains on Baker. At midnight giant squalls came through > knocking out one of our 3 antennas that we worked so hard to get up. We > worked > through the morning and have 6 stations available for the scheduled > startup > tonight at 05:00 UTC. > > Tomorrow before it gets too hot we will erect 2 more antennas making 8 > stations > available as the bands allow. > The team is exhausted but excited about settling in and making QSOs around > the > globe. We are experiencing minor IT problems, and as such have not > uploaded to > ClubLog. We do plan on making our initial upload via BGAN satellite soon, > however at this time, we do not have an exact time. > > Don N1DG Kevin K6TD. Tom N4XP for the Dateline DX Association > == > > > 73, > Eric > /elecraft.com/ > -- 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 arch...@mail-archive.com
Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island
Hi Andy and all, Good for you, congratulations on nailing them on 160m. It looks like even on 20m they are at their best between midnight and 4am EDT. I have resigned myself to some sleepless nights in order to nail them. For me it's an ATNO. The propagation forecast site linked to on their web site correctly predicted this, but I couldn't quite believe it until I saw the evidence on the spotting cluster this morning. I have worked many of the nearby South Pacific islands in the past but never in the middle of the night. AB2TC - Knut Elecraft mailing list wrote > For one data point, when I got up for other reasons this morning at 2:20 > a.m., I turned on the radio, as I need KH1 on 160. They were very solid > copy on 1822.5, and easy to work, using my K3 and KPA500, with only an > inverted vee for TX and RX. I was surprised that they were solid copy, as > that's not usually my experience on 160. > 73, andy ae6y > > -Original Message- > From: Eric Swartz - WA6HHQ, Elecraft > Sent: Thursday, June 28, 2018 11:08 AM > To: > elecraft@.qth > Subject: Re: [Elecraft] OT (sort of, but they use all Elecraft gear): > Baker > Island > > Also look at: http://kh7z.net/ > This appears to have the most real time official info. > > They are running all K3S transceivers and KPA500's on all HF bands except > 160, > where they are running a KPA1500. > > 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 arch...@mail-archive.com
Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island
Hi all, Just one more message to this thread. As with the Bouvet expedition it looks like all the action is in Face book: https://www.facebook.com/groups/1994732637472703/?pnref=story You can read all postings without joining Facebook (I have severed my connections with them). AB2TC - Knut ab2tc wrote > Hi again, > > Never mind, I found them on DX World.net. They are on he island setting up > in extremely hot weather. > > AB2TC - Knut > > > ab2tc wrote >> Hi all Elecraft DXers, >> >> What happened to the Baker Island DXpedition? They were supposed to be >> QRV >> today, but their latest news update on the website was June 4. >> >> AB2TC - Knut >> >> > > > -- 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 arch...@mail-archive.com
Re: [Elecraft] [K3] factory upgrade to K3(s)
Hi all, There is a bit of misinformation in this thread. The new synthesizer does not make any difference to the noise floor in the absence of strong nearby signals. This is how noise floor is usually measured. What it does is improving the reciprocal mixing of nearby signals and the phase noise on transmit. This improvement is significant. But the basic sensitivity of the receiver (noise floor) is not affected. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island
Hi again, Never mind, I found them on DX World.net. They are on he island setting up in extremely hot weather. AB2TC - Knut ab2tc wrote > Hi all Elecraft DXers, > > What happened to the Baker Island DXpedition? They were supposed to be QRV > today, but their latest news update on the website was June 4. > > AB2TC - Knut > > -- 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 arch...@mail-archive.com
[Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island
Hi all Elecraft DXers, What happened to the Baker Island DXpedition? They were supposed to be QRV today, but their latest news update on the website was June 4. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] K2 kit build problem
Hi Don, I know this is OT, I apologize. I have at least three of the bright yellow meters from Harbor Freight and I love them. I have checked them all against NIST certified meters at work and they are all accurate to all digits shown. Not bad for a 3 to 6 dollars (or 0 as you indicate) instrument. In general I am skeptical about most of Harbor Freight's offerings, but this one is a winner. AB2TC - Knut Don, I am glad to hear that you solved your problem. Some DMMs (but very few) reverse the polarity of the red and black probes. I trust you were using a modern DMM as opposed to an older VTVM or VOM. Those older meters have voltages when measuring resistance that will turn on semiconductor junctions. If that is what you are using, get a proper DMM for the K2 and any other semiconductor project. The inexpensive (or free with a coupon) DMMs offered by Harbor Freight are adequate for your measurements on a K2. I have 4 of them in various places for when I need a quick reading. If I need real accuracy coupled with speed of response, I use my expensive Fluke. 73, Don W3FPR -- 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 arch...@mail-archive.com
Re: [Elecraft] Does the K3(S) need occasional realignment?
Hi Bob and all,
Thanks for your reply. I certainly have no intention to hop in there and
misalign my radio, so this is why I asked. If you encounter a misaligned K3
in your repair activities, how do you fix it?
AB2TC - Knut
Bob McGraw - K4TAX wrote
> While repairing quite a number of ham radios for others over the years,
> I've made a tidy bit of money repairing radios where hams thought they
> needed "touching up" with regard to alignments. {If it isn't broke,
> don't try to fix it.}
>
> First, one should use some means and related test and measurement
> equipment to determine "if a radio needs alignment". In other words,
> if one can't determine if it needs alignment, it probably does not need
> alignment. Just to jump in an start tweaking coils and trimmers has
> put a lot of money in my pocket. [In fact, I purchased a new loaded K3S
> with other hams money. :-) ]
>
> Just a word for the wise.. I have radios which are 20 to 30
> years old which haven't been aligned since ex-factory. They still meet
> specs and thus do not need alignment today. Now, if one has replaced
> parts due to a failure, one should determine if any alignment is
> required and if so, proceed. Just be sure you have correct procedures
> and required and calibrated test equipment.
>
> 73
>
> Bob, K4TAX
>
--
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[Elecraft] Does the K3(S) need occasional realignment?
Hi, Very recently there was the same question asked about the K1. I don't recall any mention of this topic on the K3 on the reflector. It has internal trimmers on the per ham band HF filter. Is it advisable to occasionally touch these up? I have no reason to believe that my oldest K3 (ser#82) is out of alignment, but I'd like to be ahead of the game. I am old enough to have used tube rigs in my early ham career and they definitely needed occasional tune up. The narrow band ham band RF filters in the K3 have relatively high Q so the slightest component drift will quickly affect the shape of the filter curve. If the answer is affirmative, could we get a procedure for doing it properly? Tuning for max signal at the center frequency may not produce the proper shape of the bandpass filter (flat top for the required bandwidth). I know from my previous career as an RF engineer that tuning LC bandpass filters can be tricky. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] OT: For sale HFS-1.5 HF Sampler/Coupler -30dB
Hi again, The sampler has been sold. AB2TC - Knut ab2tc wrote > Hi all, > > I have this for sale, shipped USPS anywhere in the US for $50. It sells > new > for $125. This is *not* a directional coupler, just a sampler, useful for > getting a scope or spectrum analyzer view of your transmitted signal. > > Here is the technical specification: http://preciserf.com/shop/hfs-1-5/. > > I prefer payment via Paypal. > > AB2TC - Knut > -- 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 arch...@mail-archive.com
[Elecraft] OT: For sale HFS-1.5 HF Sampler/Coupler -30dB
Hi all, I have this for sale, shipped USPS anywhere in the US for $50. It sells new for $125. This is *not* a directional coupler, just a sampler, useful for getting a scope or spectrum analyzer view of your transmitted signal. Here is the technical specification: http://preciserf.com/shop/hfs-1-5/. I prefer payment via Paypal. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] KX3 Utility Segmentation Fault in Linux
Hi, I've responded in a direct email to Eric, but maybe it it did not reach the group. so here it is: Hi Eric, With all respect, I was not by any means rude. How can it be rude to ask somebody to take take their problems elsewhere where they belong? I do not think that purely operating systems problems have any place on the reflector and that goes for Windows, too. Had it it been just one or two postings, I wouldn't have been annoyed, but this was just going on and on with Linux jargon forever understood by precious few. ab2tc - Knut Please do not criticize or be rude to other's for their postings here. That's outside of Elecraft list guidelines. In fact, since this is KX3 Utility related (for the Linux version) their postings were certainly OK. Eric moderator from time to time.. /elecraft.com/ On 3/21/2018 4:47 PM, ab2tc wrote: -- 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 arch...@mail-archive.com
Re: [Elecraft] KX3 Utility Segmentation Fault in Linux
Hi, Can you please move this conversation to a Linux guru forum? Ths Linux gobbledygook has no place here, period. AB2TC - Knut Just wanted to post a quick update. Since this problem started happening on 1 Mar 2018, I searched the archives and found the previous version of lib32-harfbuzz. After installing that version of the package, now all the Elecraft linux utilities are working again on my system. https://archive.archlinux.org/repos/2018/02/28/multilib/os/x86_64/lib32 -harfbuzz-1.7.1-1-x86_64.pkg.tar.xz You can install this on Arch systems with the following command: pacman -U /path/to/lib32-harfbuzz-1.7.1-1-x86_64.pkg.tar.xz If you do install this package, be sure to blacklist it from being upgraded by placing the following line /etc/pacman.conf: IgnorePkg = lib32-harfbuzz -- 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 arch...@mail-archive.com
Re: [Elecraft] K3S Power Creep (again)
Hi all, I have the same problem. Anytime I change something, like band, power or a number of other things, power starts up ridiculously low and creeps *very* slowly up to the 100W mark. Even without changing anything the actual peak power on a transmission can be anywhere between 80 and 120W as indicated by my LP-100A. I am not sure if this is a problem with K3S only. I still have my old K3 but don't use it often enough to know if this is a K3S problem only. I understand Elecraft's policy on not relying on a fast ALC to to control power like most of the big three do (causing IMD), but really, does it have to be this slow? This is on a fairly new K3S which has been back to the factory twice to get the latest upgrades to the transmitter chain. My experience is all SSB with 100W set for the power level. AB2TC - Knut Wes Stewart-2 wrote > This is an old subject but with a new wrinkle. Although I'm observing a > drift > in power on all bands (and modes) after a band or power adjustment, it's > ridiculously slow on 17-meters. It's taking 5-10 seconds to stabilize. > > Any change, such as switching to another band and back again or a minor > change > in power starts the process over. This is particularly annoying on RTTY > AFSK > A. (Please no lectures on how Elecraft ALC is different from other > radios, I've > been running AFSK RTTY for 10 years with K3s.) Using the KPA500 power > graph as > an expanded proxy for the K3S output power, I'm seeing a change from about > 50 > watts to 500 watts after an adjustment. On CW the first dit is about 100W. > > I reran the power calibration and this appeared to fix it initially but > the > issue returned. This was particularly annoying when I was running a > digital > mode and saw that I was hitting the amp harder than desired. I tried > adjusting > power during the transmission and it practically dropped to zero before > slowly > climbing. Getting a precise level is difficult. > > Wes N7WS > > > > __ > 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 arch...@mail-archive.com
Re: [Elecraft] KPA1500 S/N 45 Arrived
Hi, Well, isn't this fairly typical behavior by Elecraft on a major new product introduction? Get used to it. Sure, Icom and the other big two probably have thousands of units on the shelf when they make a product announcements, but they have a different business model. AB2TC - Knut Hi Jim, Not broken down by prepaid levels but they did say in the Early Notification email this: Deposit Preorders will be shipped from the first production run in the order received, followed by non-deposit orders. So I wasn't sitting at the computer when the announcement hit but was about 18 hours into the 24 hour window. So I had to look at the fully prepaid order as nothing more than a blatant bribe to move up a few notches on the shipping list and the free shipping. It may not be all inclusive but the order number for SN 45 was two minutes from N9PY's order and mine was 127 later but probably was not all KPA1500's or all of the KPA1500s. As they said other orders were received by other means too. On Feb 6th Eric said they were "shipping KPA1500 for several days now". So after almost a month there are about 50 units shipped, most likely including engineering units . Not impressive or encouraging. I'm not an Elecraft basher I'm Elecraft from 160 meters to 432MHZ. 73. Bob K2TK ex KN2TKR (1956) & k2TKR K2, KX3, K3. KPA500, KAT500. P3, KRC, 3 XV's and more. -- 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 arch...@mail-archive.com
Re: [Elecraft] Elecraft K3s and FT-8 in an evening
Hi all, No, the major contest season has not ended. The WPX contest is still to go at the end of this month. AB2TC - Knut Byron Peebles-3 wrote > I had a goal to take a shot at Digital modes after the 2017-2018 Major > Contest Season, which ended Sunday with the close of ARRL DX SSB. So, > Monday I was determined to make as much progress as I could with > something digital. > > -- 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 arch...@mail-archive.com
Re: [Elecraft] Advice needed: Remote Station Enhancement
Hi all, Of course this assumes that the sole transmitter on the bus obeys the rules as well, which is to be an open collector or open drain (or relay contact to ground). I am sorry if I omitted that point. As far as older Yaesu transceivers are concerned, their design is proprietary and cannot be brought into the mold without serious converters (which should frankly be easily constructed by the serious amateur). My main point is that the amateur community should move towards following the "standard". If all devices followed that "standard" they would all work together and there would be no problem with one device powering another. AB2TC - Knut ab2tc wrote > Hi all, > > I was reluctant to respond again to this long thread, but I will. > > If all receivers on the bus (yes, it is a bus) were to obey the rules to > have a pullup resistor and a steering diode we would not have the problem > of > "false power" to devices on the bus. This would be proper engineering > practice which has unfortunately been ignored by the the ham community for > years. > > AB2TC- Knut > > > > -- > 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 > 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 arch...@mail-archive.com
Re: [Elecraft] Advice needed: Remote Station Enhancement
Hi all, I was reluctant to respond again to this long thread, but I will. If all receivers on the bus (yes, it is a bus) were to obey the rules to have a pullup resistor and a steering diode we would not have the problem of "false power" to devices on the bus. This would be proper engineering practice which has unfortunately been ignored by the the ham community for years. AB2TC- Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] Advice needed: Remote Station Enhancement
Hi Don and all, Hear,hear, Don. The receivers should have the pullup resistor to whatever the appropriate voltage needed (within reason) *and* a steering diode in series with the input. This will prevent another device with a higher voltage from feeding current back into the device which could damage semiconductors. Without the steering diode all receivers must use the same pullup voltage. Of course a single receiver is not a problem either. AB2TC - Knut -- 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 arch...@mail-archive.com
[Elecraft] The Bouvet expedition
Hi, In case you haven't seen it, The 3Y0Z expedition is now officially aborted, after about 3 days of silence on their part. The reason is in part weather, in part engine trouble. They are now headed back home. They are talking about rescheduling it. Hopefully they can wait 3 or 4 years so we have some decent conditions so we non super stations can have a chance of working it. For me it's an ATNO. I wish them well on their return trip. AB2TC - Knut -- 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 arch...@mail-archive.com
[Elecraft] The Bouvet Island expedition
Hi, For those who don't know it yet, the Bouvet Island DXpedition is now officially aborted, after 3 days of silence on their part. The reason is part weather, part engine failure. They are now on their way home. I wish them well. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] OT: 3Y0Z Bouvet Island DXpedition
Hi all, Look at this video from their ship: https://www.facebook.com/vhotzfeld/videos/g.639362206232014/10213092437043243/?type=2=1 They have slowed down to 2 knots (from 10-11). This storm might delay their ETA by several days. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] OT: 3Y0Z Bouvet Island DXpedition
Hi again, Well, the recent posts have indeed taken us farther OT. While the original GPS 101 posting was excellent information, we are now well past the overload on GPS details (and politics). The ship is now well past South Georgia Island. They acknowledge that their ship borne antennas leave them with weak signals (both ways of course). Hopefully that will change once they get their beams up on the island. Can we please drop the GPS subject? AB2TC - Knut Dale Chayes wrote > At the risk of taking us further off topic….. > > SA was turned off in May of 2000 by executive order. > https://www.gps.gov/systems/gps/modernization/sa/ > https://www.gps.gov/systems/gps/modernization/sa/; > -- 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 arch...@mail-archive.com
[Elecraft] OT: 3Y0Z Bouvet Island DXoedition
Hi Elecraft community, This is of course OT but relevant information to all K3 owners who are chasing DX. They are well underway on their ship closing in on South Georgia Island. You can trace the ship's course here: https://share.garmin.com/bouvet It takes a while to update, but it will. I find it humorous that their elevation reported appears to change randomly between 100' under water to more than 100' above. Their main web site is quite impressive but not very up to date and is not interactive, here: http://www.bouvetdx.org/ All the action seems to be on Facebook. On their web site there is a link to their Facebook group in the upper right corner. You can browse all the content without having a Facebook account. There are a number of nice videos, mostly from their ship's departure from Punta Arenas. The ship looks super modern with a ultra modern and high tech bridge. Again, I apologize to those who are annoyed by OT postings, but this is after all the DX expedition of this century (likely the most costly in history) and I have been surprised about how low profile it has had on the Internet. They are qrv /MM (but their activity seems to mostly CW on 40m. I have yet to see a spot on the cluster. BTW, Bouvet Island is a Norwegian possession (undisputed as far as I know) and the crew has two veteran members, Erling and Just. AB2TC - Knut -- 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 arch...@mail-archive.com
Re: [Elecraft] K3 Power Reading/SWR/ALC Problem
Hi Don and all, I really don't understand why static build up on the antenna should be a problem with the K3. Due to the (good) design of the SWR bridge (a two transformer design with a voltage transformer right across the output) the antenna port presents a dead short circuit at DC both in receive and transmit. I just verified this with an ohm-meter (in receive only - no need to check in transmit since the SWR bridge is surely present then - don't want to kill my DMM). Maybe we are talking semantics here but it appears to me that the cause of diode damage in the SWR bridge circuit is more likely caused by transients induced into the antenna system by nearby lightning strikes than static buildup. Knut - AB2TC Don Wilhelm wrote > Paul, > > The diodes are the most likely suspect, so replace them first and > re-check. > > You are correct that the problem is that the wattmeter is not feeding > the power back to the MCU and the power becomes uncontrolled. > > Wattmeter damage is normally a result of static coming in on the antenna > feedline. If you do not have an means of disconnecting the antenna when > not in use, it would be wise to add that - switching the K3 to a dummy > load would be a good addition too. > > 73, > Don W3FPR > -- 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 arch...@mail-archive.com
Re: [Elecraft] KAT500 Remote software
Hi Jack and Don, As Ron says, VFWD and VRFL are related to forward and reflected power. Actually, they are roughly proportional to forward and reflected *voltage*. I say roughly because there is some nonlinearity from the rectifier diodes, especially at low power. The constant of proportionality is somewhat dependent on frequency, power level *and * has some unit to unit variability. That's the stated reason why Elecraft chose not to make any estimation of actual power levels. But SWR is easily calculated b y the formula: VSWR = (VFWD+VRFL) / (VFWD-VRFL) This formula factors out all the variability mentioned above except the diode nonlinearity. In your case this works out as (225+3) / (225-3) = 1.03 Since SWR is all that is required to be known in an autotuner, that's all the KAT500 is calculating. Actually the calculated SWR doesn't even have to be very accurate as long is it a monotonic function (no dips or peaks) of the actual SWR. To be fair, the KAT500 does need an estimate of forward power since that is being used to fault if it is too high, but it doesn't have to very accurate. The forward power is proportional to VFWD squared. AB2TC - Knut Don Wilhelm wrote > Jack, > > For any wattmeter (the one in the KAT500 included), the VFWD and VRFL > values are related to forward power and reflected power. Those are raw > numbers and some math is required to calculate the actual power and SWR. > > VRFL subtracted from VFWD can be used to computer the power into the > load (in this case the input to the KAT500), but you need to know the > scaling factor that may be unique to the wattmeter. > > Similarly, if you divide VRFL by VFWD, you will obtain a result that is > related to the SWR. > > See the formulas associated with SWR in most any book dealing with > antennas and transmission lines. > > 73, > Don W3FPR > > On 1/11/2018 7:07 AM, Jack Satterfield wrote: >> Can someone explain the VFWD and VRFL readings in the bottom right of >> screen? >> >> When I put out a 15w tune signal, VFWD reads 225 and VRFL reads 2 to 3 >> >> Just trying to make sense of the readings >> >> >> >> Jack >> >> W4GRJ >> >> >> >> __ >> 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 > donwilh@ >> > __ > 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 arch...@mail-archive.com
Re: [Elecraft] Progressive Tuning Rate
Hi, Icom has had that for a long time even for their low end rigs such as the IC-718. This has been suggested here a while ago for Elecraft to consider. As far as I know the idea was rejected. I liked it on my Icom rigs, but some people truly hate it. Nowadays many people, including myself, use panadapters that allow point and click QSY. That can bring you straight across a band with a couple of mouse clicks. AB2TC - Knut Mal Speer wrote > +1 > > -Original Message- > From: > elecraft-bounces@.qth > [mailto: > elecraft-bounces@.qth > ] On Behalf Of Chuck Chandler > Sent: Tuesday, January 02, 2018 11:50 AM > To: > elecraft@.qth > Subject: [Elecraft] Progressive Tuning Rate > > Whooo-hooo. Sign me up. I would love to have the progressive tuning > rate, > that is something I miss from my past rigs. > > 73 es HNY de Chuck, WS1L > > -- > > > === > Chuck Chandler > chandlerusm@ > === > -- 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 arch...@mail-archive.com
Re: [Elecraft] K3s IF bandwidth?
Hi again, Heavens no, they are definitely bandpass filters, tailored to each ham band. I think I have seen a plot of their responses somewhere, but can't remember where. Each filter covers 2 bands with a relay to choose which one of the two. AB2TC - Knut David Gilbert wrote > I could be wrong, but I thought they were low pass filters, not band > pass. I think each filter even covers more than one band if they are > within an octave or something like that. > > Somebody please correct me if I'm wrong. > > Dave AB7E -- 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 arch...@mail-archive.com
Re: [Elecraft] K3s IF bandwidth?
Hi all and Merry Christmas, Well, the ham band specific HF filters are probably significantly narrower than 2MHz, tailored to the actual width of the band in question. I don't know if there is a way to tell the K3(S) to use a general coverage filter, if installed, even if inside a ham band. That would circumvent the problem. AB2TC - Knut tomb18 wrote > HiIf you connect an sdrplay to the if output you can see over 2mhz > bandwidth. 73 Tom > -- 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 arch...@mail-archive.com
Re: [Elecraft] Antenna Analyzer (FA-VA4)
Hi, That ought to be fairly straightforward. Connect one antenna to the the output port of the analyzer and the other antenna to the input port. Then set the sweep for the frequency range you want to test. AB2TC - Knut wc1m wrote > Jim wrote: > >> Note also that this is a vector NETWORK analyzer. A NETWORK analyzer has >> input and output ports, so that in addition to impedance and TDR, it can >> also measure the response of any system. You can, for example, measure >> the effectiveness of filters, and the coupling between adjacent antennas. > > Jim, for those of us who haven’t used a network analyzer, how do you use > one to measure coupling between antennas? > > 73, Dick WC1M > > > __ > 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 arch...@mail-archive.com
Re: [Elecraft] KX3: CM500 best price/use with
Hi, This thread had me thoroughly confused for a while, but I now realize that it applies to the KX3 and KX3 *only*. It does *not* apply to the K3 which *must* have bias turned on to use any Electret microphone, whether by Heil, Yamaha or Koss. In the K3 the ring on the microphone socket is *floating* and can obviously not by used for an alternate source of bias. I verified that the Yamaha and Koss both have the tip and ring connected together. The Heil comes with a mono (TS) plug. All of this is compatible with the K3 if the bias is turned on. I am not sure what's up with the KX3 and the "cleaner" audio achieved with the bias turned off. It seems to me that this is not a choice that users should have to make. Until I saw this thread, as far as I know the advice was to always (for both the K3 and the KX3) turn bias on to use any Electret microphone AB2TC - Knut Don Wilhelm wrote > Ed, > > You can use the stereo mic connector directly into the KX3 if you turn > MIC BTN off in the menu. You should also turn off MIC BIAS which > results in a cleaner signal - the mic then gets its bias from the LOGIC > residual voltage that is normally applied to the ring. > > You can use the XMIT button to initiate transmit, or use VOX. > That may be inadequate for your purposes since you need to activate PTT > from your sequencer. The only alternative is to build a special cable > or as has been suggested several times on this reflector, use an adapter > with a stereo male plug and one jack that connects to the ring and > another to the tip. You might search the archives to see some of the > sources and part numbers. If you use an adapter like that, you do not > have to turn off MIC BTN and MIC BIAS. > The stereo plug does connect the LOGIC ground and the Signal ground > together, but no apparent harm has been mentioned because of that. > > 73, > Don W3FPR > -- 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 arch...@mail-archive.com
Re: [Elecraft] Minicircuits splitter for diversity?
Hi, Well yes. I would not trust the Cable TV splitters to be any good below 30MHz. They are not designed for frequencies that low. Specs are typically unavailable. As Jim says, Mini-Circuits is a very very reputable US brand that has been around, well, forever. They cost a lot more but there are published specs and BTW, would you really like to use "F" connectors in the shack? I wouldn't. AB2TC - Knut Michael Walker wrote > Is that any different than your basic cable splitter other than it has BNC > and not F connectors? > > Mike > -- 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 arch...@mail-archive.com
Re: [Elecraft] Suggestions for Introducing a 10-year-old to Amateur Radio and Electronics
Hi again, Not a bad idea. We were very successful in getting our four children interesting in the outdoors. The oldest daughter and her husband are even into backpacking in the back country (Algonquin park), something we never got into. The other three are very good hikers, too. I hate to be a wet blanket, but I am not sure if I understand the joy of activating peaks on ham radio. How do other hikers react to this? I know I am extremely annoyed by people gabbing on their cell phones on the trail. Is ham radio that much different? Knut - AB2TC Gary Hawkins wrote > I'll try a completely different tack. > > If you like the outdoors, how about Summits-on-the-Air (SOTA)? You'll get > to spend time planning your SOTA adventure, and taking the hike to the > peak. He'll get to see you operating and hopefully that will encourage > him to be interested as well. He can help you to build things like > portable antennas and battery packs. If you get really adventurous one day > adventures can turn into weekend camping. > > My daughter is 3 years old. We have started her on short hikes and I > hopeful next year she can do her first small peaks. Not sure how I'll keep > her entertained on the summit but I'll cross that bridge when I get there. > > 73's Gary K6YOA > > __ > 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 arch...@mail-archive.com
Re: [Elecraft] Suggestions for Introducing a 10-year-old to Amateur Radio and Electronics
Hi all, Interesting OT thread. It's getting closed to the limit for OT threads, but I'll risk another entry anyway. It reverberates with me since I just became a grandfather. Of course I have another 10 years or so before I have to really start thinking about this. On G3RJV's book. It is very interesting, but dates back to 1972! All semiconductors are germanium and Eurocentric to boot. I used the glass encapsulated OC45 and OC71 as a teenager way back in Norway. I don't think these were ever sold in NA. OC45 is an RF transistor (of sorts) and in his final design it's used as both an RF amplifier and first stage AF amplifier. He doesn't mention this in the text. The design is strikingly similar to the one in my first spring terminal based trainer kit, probably around 1965-1970. On the OC transistors, they were glass encapsulated with a black lacquer coating. One had to be very careful not to injure this coating as they would become sensitive to light if you did. With lamp lighting you'd get hum. Don't ask how I know this. On the OPs question, for a 10 year old I think the "trainer" style kits would be more appropriate as they come with all materials needed. The posting prior to Don's had what appears to be a good suggestion, but Amazon had only one left in stock last time I checked. AB2TC - Knut Don Wilhelm wrote > Ted, > > G3RJV - the Reverend George Dobbs has spent a lot of time and energy > creating easy to build radios. He has also done a lot with children to > help their interest in building and radio. > His name is familiar to most QRPers and until last year has presented at > FDIM - always quite interesting. > > He has publish many articles and books, but one that may be of interest > is available online at > http://www.mds975.co.uk/Content/george_dobbs_trf_radio.html. > > Inexpensive materials and easy to build are two things that George > always adhered to. > > 73, > Don W3FPR > -- 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 arch...@mail-archive.com
Re: [Elecraft] K3 after turning on doesn't receive or transmit
Hi Fred, I see no-one has responded to you so I will chime in with what I know. A few more details about what you actually see and hear when you press the power button would be helpful. What you should see and hear is an almost immediate relay click and most (all?) LEDs turn on. Fractions of of a second later the display backlight comes on, then fractions of s second later the display comes alive and you should hear audio. This machine boots up fast, thank you, engineers at Elecraft. If on the other hand, you see "CPU LD" (or something similar) in the display, the software has decided that something is wrong with the application software and decides to stay in the bootloader (modern firmware always wakes up up in the bootloader and decides where to go from there). That would explain why your only recovery is to reload the firmware. I am starting to guess now and it's not always a good idea. One explanation is that there is actually something wrong with the application firmware (corrupted to some degree). But this seems improbable since you can consistently recover by reloading it. I assume you are turning the radio off by using the power button. Another possible explanation is that the CPU starts executing before the hardware has come up completely and thus erroneously concludes that the application firmware is corrupted. I realize that none of these ramblings is a direct help to you to recover from your situation but I am hoping it may trigger others to have an AHA experience. BTW, the battery is not essential to the K3 operation. It just powers the RTC which is not very good anyway. I have plenty of better ways to tell the time of day. AB2TC - Knut Fred-2 wrote > Hi all, > > I'm a very new user to the K3. I just recently update the Synthesizer > board and added the KXV3B and the K144XV options to my K3. I made all the > updates in Config to make this work. Everything works fine. > > The problem I am having is when the radio sits over night and and turn it > on, it doesn't receive or transmit at all. The only way I can get it to > work is to start the K3 Utility and download and reinstall all firmware. > Once that is done, everything is working fine until I turn it off at night > and turn it on the next day. > > I noticed there is a battery on the main board. Does it sound like it is > dead and needs to be replaced? > > I have not had a chance to check this. > > Thanks for your help! Please let me know if you have any questions. > > -- > Thanks, > > Fred > -- 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 arch...@mail-archive.com
Re: [Elecraft] K3 after turning on doesn't receive or transmit
Hi Fred, I see no-one has responded to you so I will chime in with what I know. A few more details about what you actually see and hear when you press the power button would be helpful. What you should see and hear is an almost immediate relay click and most (all?) LEDs turn on. Fractions of of a second later the display backlight comes on, then fractions of s second later the display comes alive and you should hear audio. This machine boots up fast, thank you, engineers at Elecraft. If on the other hand, you see "CPU LD" (or something similar) in the display, the software has decided that something is wrong with the application software and decides to stay in the bootloader (modern firmware always wakes up up in the bootloader and decides where to go from there). That would explain why your only recovery is to reload the firmware. I am starting to guess now and it's not always a good idea. One explanation is that there is actually something wrong with the application firmware (corrupted to some degree). But this seems improbable since you can consistently recover by reloading it. I assume you are turning the radio off by using the power button. Another possible explanation is that the CPU starts executing before the hardware has come up completely and thus erroneously concludes that the application firmware is corrupted. I realize that none of these ramblings is a direct help to you to recover from your situation but I am hoping it may trigger others to have an AHA experience. BTW, the battery is not essential to the K3 operation. It just powers the RTC which is not very good anyway. I have plenty of better ways to tell the time of day. AB2TC - Knut Fred-2 wrote > Hi all, > > I'm a very new user to the K3. I just recently update the Synthesizer > board and added the KXV3B and the K144XV options to my K3. I made all the > updates in Config to make this work. Everything works fine. > > The problem I am having is when the radio sits over night and and turn it > on, it doesn't receive or transmit at all. The only way I can get it to > work is to start the K3 Utility and download and reinstall all firmware. > Once that is done, everything is working fine until I turn it off at night > and turn it on the next day. > > I noticed there is a battery on the main board. Does it sound like it is > dead and needs to be replaced? > > I have not had a chance to check this. > > Thanks for your help! Please let me know if you have any questions. > > -- > Thanks, > > Fred > -- 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 arch...@mail-archive.com
