Re: [Elecraft] [Fwd: KSBW Field-Day Video with K3]
I just wish we could get that kind of coverage and understanding over here. It appears in the US, the media and public are much more aware of the part amateur radio can play in national emergencies and just generally (you have a big country with places with no cell coverage etc). 73 de M0XDF, K3 #174 -- If all is not lost, where is it? On 29 Jun 2009, at 01:43, Eric Swartz - WA6HHQ, Elecraft wrote: I received a nice surprise watching the news late last night when a K3 popped up on the screen at the end of this story. (See the link below.) They actually had two ham radio related stories. Field Day, and earlier in the broadcast, the story on moon bouncing that has appeared in the NY Times and elsewhere. 73, Eric WA6HHQ Original Message Subject: FW: KSBW Field-Day Video Date: Sun, 28 Jun 2009 09:45:35 -0700 (PDT) Lots of K3s in this operation, with a couple great close-up shots. http://www.ksbw.com/video/19881725 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] [Fwd: KSBW Field-Day Video with K3]
Same situation over here David. Even in items about CB or pirate music transmitters the media misuses the term radio-amateur. If you say a technical/regulations exam is mandatory for this hobby people are highly surprised. Why do you need that to play deejay on the air? Even to the local authorities you have to explain putting up an antenna (which has restrictions here) is not for transmitting music Good commercial btw Eric, nice close ups of the brand label! And a well chosen contrast with the other eh.HF thingy. :-) 73' Paul PD0PSB David Ferrington, M0XDF wrote: I just wish we could get that kind of coverage and understanding over here. It appears in the US, the media and public are much more aware of the part amateur radio can play in national emergencies and just generally (you have a big country with places with no cell coverage etc). 73 de M0XDF, K3 #174 -- If all is not lost, where is it? On 29 Jun 2009, at 01:43, Eric Swartz - WA6HHQ, Elecraft wrote: I received a nice surprise watching the news late last night when a K3 popped up on the screen at the end of this story. (See the link below.) They actually had two ham radio related stories. Field Day, and earlier in the broadcast, the story on moon bouncing that has appeared in the NY Times and elsewhere. 73, Eric WA6HHQ Original Message Subject: FW: KSBW Field-Day Video Date:Sun, 28 Jun 2009 09:45:35 -0700 (PDT) Lots of K3s in this operation, with a couple great close-up shots. http://www.ksbw.com/video/19881725 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/-Fwd%3A--KSBW-Field-Day-Video-with-K3--tp3171889p3173108.html Sent from the Elecraft mailing list archive at 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] Heil Proset-k2 with K3 - Settings please for newbie
Hi Dale: That 1/4 plug on the headphone cable that you are looking at might in fact be the adapter. Gently pull it apart. You might be pleasantly surprised. It's not visually obvious that it is a two part affair. My Proset came with an instruction sheet that is titled: Proset-K2 Assembly and Operating Instructions (Revision B, April 9, 2006) There is a note under the Headphone Plug Installation Paragraph: ..The remaining 1/4 inch stereo plug pulls apart revealing a standard 1/8 inch stereo plug... 73, Mike K2MK Dale Harding K7DNH Sun, 28 Jun 2009 19:44:03 -0700 interesting - mine came with a 1/4 stereo plug - and the 1/8 mic plug - there is an adapter that came with it to plug the 1/8 mic into and it then goes into the multipin front panel mic connection and of course the 1/4 stereo plug goes into the front phone jack - but I cant use it on the rear panel as there is no 1/4 to 1/8 stereo adapter... I will email support and ask them about it - thanks dale __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Headphone distribution amp/splitter which was mentioned a short while back...
Greetings fellow Elecrafters... A while back, maybe 2-3 weeks ago anyway, someone (in EU, if I recall) posted a link to a headphone amp/splitter box which they're recently purchased. I visited the link, but seem to have lost it in the hubbub of getting ready for Field Day 2009... BUT I's really like to find the link again. Actually, I;m not all that interested in THAT device, but it included info on the op amps they were using for the individual headphone amplifiers, and when I followed that link, it took me to a comment about some even more robust op amps which were available for the same purpose... THOSE op amps are what I really am looking for, but this may be best way to find them again. Thanks, 73, Tom HammondN0SS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] 500Hz by Inrad
Dear fellow Elecrafters, has anybody compared a new 8-pole 500Hz filter from INRAD to a standard 5-pole 500Hz? My intention is to have a 8-pole filter in main RX and 5-pole in 2nd RX. Could there be any problems due to different offsets? Jan OM2XW _ Ukážte im cestu. Pridajte mapy a trasy k pozvánkam na oslavu. http://www.microsoft.com/windows/windowslive/products/events.aspx __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Headphone distribution amp/splitter which was mentioned a short while back...
May be this HeadRoom link: http://www.headphone.com/products/headphone-amps/the-mobile-line/headroom-total-airhead.php 73! Alex UR5LAM Tom Hammond: Greetings fellow Elecrafters... A while back, maybe 2-3 weeks ago anyway, someone (in EU, if I recall) posted a link to a headphone amp/splitter box which they're recently purchased. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Using K2 for both QRP 100 Watts
I have been using my K2 exclusively in the 100W configuration. I now want to have the option of taking just the base radio and using it stand-alone for QRP, but without compromising my normal use with the KPA100. I have separated the KPA100 in the case with the antenna tuner. I am consideinr adding the KAT2 tuner to the base radio. I see that you use the ANT 1/2 switch with the KAT2 for antenna selection on the QRP radio. Can I stil use this switch to select between my 2 antennas on the 100 Watt tuner (when I am bypassing the KAT2)? Thanks, Tom, KG3V __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Headphone distribution amp/splitter which was mentioned a short while back...
Small box, big price. Before I bought that, I'd look at what was available from American Musical Supply, Musicians Friend, or Sweetwater Sound. www.americanmusical.com www.musiciansfriend.com www.sweetwater.com Search for headphone amplifier or headphone distribution. ... assuming you in the USA. - Keith - -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Alexander Ponomarenko Sent: Monday, June 29, 2009 8:18 AM To: Tom Hammond Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Headphone distribution amp/splitter which was mentioned a short while back... May be this HeadRoom link: http://www.headphone.com/products/headphone-amps/the-mobile-line/headroo m-total-airhead.php 73! Alex UR5LAM Tom Hammond: Greetings fellow Elecrafters... A while back, maybe 2-3 weeks ago anyway, someone (in EU, if I recall) posted a link to a headphone amp/splitter box which they're recently purchased. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Headphone distribution amp/splitter which was mentioned a short while back...
Tom Hammond wrote: A while back, maybe 2-3 weeks ago anyway, someone (in EU, if I recall) posted a link to a headphone amp/splitter box which they're recently purchased. I visited the link, but seem to have lost it in the hubbub of getting ready for Field Day 2009... BUT I's really like to find the link again. A search for behringer headphone amp will bring up some relevant info. You may have visited the Behringer site (www.behringer.com) for the details you seek. Gus Hansen KB0YH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Heil Proset-k2 with K3 - Settings please for newbie
This is true. I am looking at the connectors on my Proset-K2 and it has an 1/8 stereo connector for headphones and an 1/8 mono connector for the mic. I have no idea where the 1/8 to 1/4 headphone adapter went, don't really need it. The interface cable converts the 1/8 mono mic connector to an 8 pin foster. There is an 1/8 headphones connector and a PTT/foot switch connector (1/4 female) as well. K2MK wrote: Hi Dale: That 1/4 plug on the headphone cable that you are looking at might in fact be the adapter. Gently pull it apart. You might be pleasantly surprised. It's not visually obvious that it is a two part affair. My Proset came with an instruction sheet that is titled: Proset-K2 Assembly and Operating Instructions (Revision B, April 9, 2006) There is a note under the Headphone Plug Installation Paragraph: ..The remaining 1/4 inch stereo plug pulls apart revealing a standard 1/8 inch stereo plug... 73, Mike K2MK Dale Harding K7DNH Sun, 28 Jun 2009 19:44:03 -0700 interesting - mine came with a 1/4 stereo plug - and the 1/8 mic plug - there is an adapter that came with it to plug the 1/8 mic into and it then goes into the multipin front panel mic connection and of course the 1/4 stereo plug goes into the front phone jack - but I cant use it on the rear panel as there is no 1/4 to 1/8 stereo adapter... I will email support and ask them about it - thanks dale __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.374 / Virus Database: 270.12.94/2207 - Release Date: 06/28/09 17:54:00 -- R. Kevin Stover ACØH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Using K2 for both QRP 100 Watts
Tom, That is taken care of automatically. If both the KAT2 and the KPA100 are detected, the KAT2 is set to ANT1 and cannot be changed until the KPA100 is removed. Of course, if both the KPA100 and KAT100 are connected to a K2 having the KAT2 also, the ANT1/2 switch works, but it refers to the antenna jacks on the KAT100 - the KAT2 will still be set to ANT1. What all this means is that you connect the RF Path from the K2 to the KPA100 at the ANT1 jack. 73, Don W3FPR kg3vt...@gmail.com wrote: I have been using my K2 exclusively in the 100W configuration. I now want to have the option of taking just the base radio and using it stand-alone for QRP, but without compromising my normal use with the KPA100. I have separated the KPA100 in the case with the antenna tuner. I am consideinr adding the KAT2 tuner to the base radio. I see that you use the ANT 1/2 switch with the KAT2 for antenna selection on the QRP radio. Can I stil use this switch to select between my 2 antennas on the 100 Watt tuner (when I am bypassing the KAT2)? Thanks, Tom, KG3V __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Headphone distribution amp/splitter which was mentioned a short while back...
Not sure about the US, but for anyone wanting this in the UK, take a look at CPC - http://cpc.farnell.com/jsp/search/productdetail.jsp?sku=AV1580902_requestid=87947 just what I've been looking for FD - 4 outputs with Volume controls on each and 12v supply (extra, but I have 12v coming out of my ears!) 73 de M0XDF, K3 #174 -- Why should I fear death? If I am, death is not. If death is, I am not. Why should I fear that which cannot exist when I do? -Epicurus, philosopher (c. 341-270 BCE) On 29 Jun 2009, at 12:48, Tom Hammond wrote: Greetings fellow Elecrafters... A while back, maybe 2-3 weeks ago anyway, someone (in EU, if I recall) posted a link to a headphone amp/splitter box which they're recently purchased. I visited the link, but seem to have lost it in the hubbub of getting ready for Field Day 2009... BUT I's really like to find the link again. Actually, I;m not all that interested in THAT device, but it included info on the op amps they were using for the individual headphone amplifiers, and when I followed that link, it took me to a comment about some even more robust op amps which were available for the same purpose... THOSE op amps are what I really am looking for, but this may be best way to find them again. Thanks, 73, Tom HammondN0SS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] [K3] Headphone Splitter/Amp
Hi All, I am wondering if this Beringer headphone splitter amp (HA400) will work well with the K3. As long as it doesn't amplify or introduce hiss I would imagine it would work well. Any comments? I have an old Heil Proset that I mainly use, but others may use a wide range of microphones with different impedances. http://www.americanmusical.com/Item--i-BEH-HA400-LIST Thanks, Steve Pituch, W2MY, AAR6CX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] [K3] Headphone Splitter/Amp
rant on Behringer - They really bug me. Sorry to say it, but I do. They bug me because they have a history of stealing other people's designs (Mackie, DBX) and producing them very cheaply in China. Or at least that is the way things appear and there is a history of law suits which suggests others have the same opinion. They bug me because their gear really does work well for less money. I have (had) 2 mixers, one was Behringer. My rack compressor is Behringer. So is my parametric EQ. Our church has Behringer compressors as well. We have a headphone distribution amp - yep, Behringer. I compared the Behringer EQ to a Rane EQ and the Behringer was better. I compared the Behringer 2 channel compressor to a DBX 2 channel compressor and found the Behringer was better. Dang them! I really hate to support their less-than-ethical business model, but I just can't escape the results of their approach. rant off - Keith N1AS - - K3 711 - -Original Message- I am wondering if this Beringer headphone splitter amp (HA400) will work well with the K3. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Interesting Read: Dinosaur Concepts - why are we always so conservative?
This was published in 2007, and makes no reference to our exalted Elecraft K3, but it's still very interesting reading, and indirectly on topic. Thanks to Adam Farson, VE7OJ / AB4OJ, for translation and hosting: http://www.ab4oj.com/dl/misc/dinosaur_concepts.pdf 73, Steve NN4X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] scan
I'm no lawyer but reading the regulations here: http://www.fcc.gov/oet/info/rules/part15/PART15_07-10-08.pdf I see this: Scanning Receiver. For the purpose of this part, this is a receiver that automatically switches among four or more frequencies in the range of 30 to 960 MHz and which is capable of stopping at and receiving a radio signal detected on a frequency. Receivers designed solely for the reception of the broadcast signals under part 73 of this chapter or for operation as part of a licensed station are not included in this definition. My interpretation is that my K3 is part of the equipment at N7WS, an FCC licensed station, and is exempt from the regulation. --- On Sat, 6/27/09, van fair g...@bellsouth.net wrote: From: van fair g...@bellsouth.net Subject: [Elecraft] scan To: elecraft@mailman.qth.net Date: Saturday, June 27, 2009, 9:19 AM I tried for the first time to use the scan function of the K3. I wanted to scan part of 6 meters. I got a message that stated scan no allowed on this band any way to change the set up to be able to scan 6 meters in the US. Thanks Van W4GIW __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] [K3] Headphone Splitter/Amp
There's an old saying about the cheap comes out the more expensive... If you're interested in expanding your Ham horizons into homebrewing, a headphone distribution amplifier has to be just about the most forgiving, inexpensive and simple project one might consider. Most radio/electronics handbooks have many examples and there are dozens of circuits and kits on the 'net. Just about any headphone amplifier with a relatively high impedance input (and that's 99.9% of them) can be set up in groups with the inputs paralleled to provide independently adjustable gain outputs. Ron AC7AC -Original Message- Dang them! I really hate to support their less-than-ethical business model, but I just can't escape the results of their approach. rant off - Keith N1AS - - K3 711 - -Original Message- I am wondering if this Beringer headphone splitter amp (HA400) will work well with the K3. __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Interesting Read: Dinosaur Concepts - why are we always so conservative?
Nice article! The only thing (besides initial price levels) that kept me away from SDR based designs for a long time is computer generated interference. That's also why the K3 shines as stand alone SDR. It seems though computers/switching PSU's are finally becoming less RF noisy, making SDR much more usefull. (Perseus/netbook alongside K3 here with lineair power supplies giving virtually no interference) 73' Paul PD0PSB This was published in 2007, and makes no reference to our exalted Elecraft K3, but it's still very interesting reading, and indirectly on topic. http://www.ab4oj.com/dl/misc/dinosaur_concepts.pdf 73, Steve NN4X -- View this message in context: http://n2.nabble.com/Interesting-Read%3A-Dinosaur-Concepts---why-are-we-always-so-conservative--tp3174631p3174891.html Sent from the Elecraft mailing list archive at 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] V3.19
Using the CW offset feature to go from SSB CW modes . Works as advertised. However when I click on a spot when in CW mode to go to USB something is odd: Example: In CW mode at 50.110 Click on spot on 50.125 Radio goes to USB mode at 50.124.47 -- 50.125 minus CW offset of 530 Hz. Anybody else seeing this? I also wonder why one have to use reverse CW to get to an exact CW freq from USB frequency mode change. Yes, this was stated in release. However, why should it matter? I personally always use normal CW. 73 de Brian/K3KO No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 8.5.375 / Virus Database: 270.12.94/2208 - Release Date: 06/29/09 05:54:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] V3.19
If you click the same spot again does it then go the correct frequency? N2TK, Tony -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian Alsop Sent: Monday, June 29, 2009 11:23 AM To: elecraft@mailman.qth.net Subject: [Elecraft] V3.19 Using the CW offset feature to go from SSB CW modes . Works as advertised. However when I click on a spot when in CW mode to go to USB something is odd: Example: In CW mode at 50.110 Click on spot on 50.125 Radio goes to USB mode at 50.124.47 -- 50.125 minus CW offset of 530 Hz. Anybody else seeing this? I also wonder why one have to use reverse CW to get to an exact CW freq from USB frequency mode change. Yes, this was stated in release. However, why should it matter? I personally always use normal CW. 73 de Brian/K3KO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Interesting Read: Dinosaur Concepts - why are we always so conservative?
However, the radio hobby industry perseveres with narrow-band design concepts even to the present day - usually with automatically-switched front-end BPF's, the rare exception being the tracking preselectors in the pioneering JRC NRD-545 (1998). Not to quibble over details but JRC's varactor-tuned front end filters predated the NRD-545 by 12 years and two models -- it debuted (at least in their amateur receiver line) with the NRD-525 in 1986 and was carried over to the NRD-535 in 1991. It was also incorporated in the JST-135 and JST-145/245 treansceivers, both of which also preceded the NRD-545 by years. (Not sure about the JST-125, never did get my paws on one of them...) 73 de WW2PT -- your friendly resident JRC quibbler. ;-) -- View this message in context: http://n2.nabble.com/Interesting-Read%3A-Dinosaur-Concepts---why-are-we-always-so-conservative--tp3174631p3175142.html Sent from the Elecraft mailing list archive at 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] Scanning
My interpretation is that my K3 is part of the equipment at an FCC licensed station, and is exempt from the regulation. My 756ProIII and my IC-706 scan perfectly well on 6m right out of the box. VE7XF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] V3.19
Brian, I have no answer on the incorrect frequency, but CWrev is upper sideband. I guess that is the main reason CW rev is required. If you are going from CW normal, there would have to be twice the CW offset figured in. That may be your 'wrong frequency' answer - the K3 compensates for the CW offset only once, not two times the offset. 73, Don W3FPR. Brian Alsop wrote: Using the CW offset feature to go from SSB CW modes . Works as advertised. However when I click on a spot when in CW mode to go to USB something is odd: Example: In CW mode at 50.110 Click on spot on 50.125 Radio goes to USB mode at 50.124.47 -- 50.125 minus CW offset of 530 Hz. Anybody else seeing this? I also wonder why one have to use reverse CW to get to an exact CW freq from USB frequency mode change. Yes, this was stated in release. However, why should it matter? I personally always use normal CW. 73 de Brian/K3KO __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] FD with K3 #1826
I ran a 1B field day station in my north meadow this weekend using my 9 month old K3. I had thought that I would use my K2 instead for its lower current consumption, since I was using batteries and a solar panel. I couldn't give up the K3 performance and features however, so I went with that. Power was from a pair of 75 Ah deep cycle lead acid batteries and the surplus solar panel (probably in the 15W range). I generally ran the TX at about 60 to 70 watts to save some current. I used the first battery until I went to bed around 0830Z. I swapped the batteries when I got up in the morning at about 1400Z. The power setup and rig worked great. At the lowest point for the first battery, the rig showed about 11.9 to 12V key up and 11.5V transmitting - the rig worked fine at that point. I operated SSB exclusively so that my wife could help with the duping (I paper logged since I don't have a suitable laptop). I really took advantage of the rigs interference fighting ability to pull weaker stations out from under the often serious splatter from the stronger stations (there were quite a few really bad sounding signals on the air - we need a campaign to teach hams how to adjust their rigs!). 20M was a wall of noise at times but the K3 worked right through it. I used my tall Douglas-fir trees to support two wire antennas. One was an extended double Zepp for 40M that worked great on 80 and 40. The other was the 3 5/8 wave collinear beam described in the July 2009 QST (cut for 20M). It worked well on the eastern path that gave me good coverage from the northern states to the southeastern states. I would recommend this antenna for those wanting good bi-directional gain in a fixed direction. I am very glad that I used the K3. It is a great FD rig! 73, Phil, NS7P Elmira, OR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Interesting Read: Dinosaur Concepts - why are we always so conservative?
Right now the cheapest and most powerful tool in most designer's arsenal is digital signal processing and digital control systems. Remember the old saying, When all you have is a hammer, everything begins to look like a nail. We humans are designed to process and analyze analog data, not digital data. That's why we love pictures and graphs but can't make sense out of the racket of a raw digital signal fed to an audio transducer. All of our senses work with analog inputs. The fastest computers I ever used are still among the fastest today at the tasks they are designed for, and that was back in the 1960's. They were analog computers. Digital systems became popular in recent decades because the hardware became absurdly cheap, both in cost and energy demand. With this technology, one can take an absurd brute force approach to a problem, including going to extremes trying to produce an analog output humans can work with efficiently, and come up with an acceptable result at an acceptable price (aided by an overwhelming amount of marketing saying if it's digital it's better!). But just considering the millions of active devices and the huge number of lines of code it takes to accomplish even a simple task shows just what a brute force solution digital systems are today, especially when one realizes that 99.9% of the same results can be had with a handful of analog parts and one or two active devices. What we haven't done over the past few decades is develop analog technologies that can be cookie-cutter stamped out by the billions at cheaply as digital integrated circuits. It is true that digital systems are amazingly valuable and useful but, like Alley Oop's stone axe in Moo, because they're invaluable today doesn't mean they aren't just a stop gap until we develop a more efficient technology better adapted to our analog senses. In the meantime there are those right here who prefer a K2 or K1 to a K3. And many who prefer an older vacuum tube rig to any of those. They aren't just 'conservative' or 'dinosaurs'. Many, perhaps most, are just connoisseurs of good analog signal processing which, for their purposes, they find better than even the best of today's digital systems. Ron AC7AC -Original Message- This was published in 2007, and makes no reference to our exalted Elecraft K3, but it's still very interesting reading, and indirectly on topic. Thanks to Adam Farson, VE7OJ / AB4OJ, for translation and hosting: http://www.ab4oj.com/dl/misc/dinosaur_concepts.pdf 73, Steve NN4X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 on FD
I brought my K2 to FD at local W8MRC station for the 3rd year. It had quite an impact. The CW Ops couldn't believe the difference. I think we may have a few more converts. (Seems like I send this message each FD hi.) 73 John AB8O __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 Rev B PCB - Does it contain the side-tone mod?
Hey Gang, I read online yesterday that it may be that the K2 control PCB Rev-B might have incorporated the side-tone audio filter somewhere in advance of the LM380N chip, to produce a waveform closer to sine-wave. Does anyone know if this is true? Is there anyway of getting to look at a silk-screen pic for this board? Thanks Duane N1BBR -- bw...@fastmail.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] V3.19
It's because clicking on the spot results in (at least) two actions: 1) Set the radio frequency to 50.125 2) Set the radio mode to SSB Unfortunately the second step invokes the CW offset adjustment, and leaves you pitchHz off where you wanted to be. If your software set the mode before setting the frequency, it should work as you expect. I had the same problem, using the DXLabs Suite. ~Iain / N6ML Brian Alsop wrote: Using the CW offset feature to go from SSB CW modes . Works as advertised. However when I click on a spot when in CW mode to go to USB something is odd: Example: In CW mode at 50.110 Click on spot on 50.125 Radio goes to USB mode at 50.124.47 -- 50.125 minus CW offset of 530 Hz. Anybody else seeing this? I also wonder why one have to use reverse CW to get to an exact CW freq from USB frequency mode change. Yes, this was stated in release. However, why should it matter? I personally always use normal CW. 73 de Brian/K3KO No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 8.5.375 / Virus Database: 270.12.94/2208 - Release Date: 06/29/09 05:54:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 Rev B PCB - Does it contain the side-tone mod?
I emailed you scans of the board direct. -- Mike WE0H K2 #6698 dw wrote: Hey Gang, I read online yesterday that it may be that the K2 control PCB Rev-B might have incorporated the side-tone audio filter somewhere in advance of the LM380N chip, to produce a waveform closer to sine-wave. Does anyone know if this is true? Is there anyway of getting to look at a silk-screen pic for this board? Thanks Duane N1BBR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Problem with K3 #353 at Field Day
We had 3 K-3’s at our field day QTH this year. Two worked flawlessly, however, mine; #353 developed some front panel issues. I have had no problems with my K3 prior to this. The rig would work as usual for a period of time then with no error messages; the front panel controls would not function normally. Here is a summary of what happens: Band—cannot switch bands up or down Mode—cannot switch mode Menu and Disp—do not work Xmit and ATU tune-- do not work RX Antàturns on NB Antàturns on NR All potentiometers work Push function of 4 knobs, shift, width, speed/mic, and CMP/PWR do not work VFO A knob—changes VFO A VFO B knob—changes VFO B A/B, REV, AàB—do not work PREàturns on notch, toggles between auto and manual AGCàplays contents of M3 voice keyer when on SSB Xfilàshows M1—M4 in display window NB, NR, NTCH—do not work SPOT—toggles between LO/HI and Shift/Width (shows LO and FC) CWT—toggles PWR and CMP settings in display AFX—toggles between LO/HI and Shift/Width (shows HI and BW) VàM, MàV—do not work M1, M2, M3, M4, REC—do not work RIT, XIT, CLR—do not work None of the long press functions work (yellow labels) I can power the rig off and on. The rig will intermittently begin working properly for a while then the front panel repeats what is described above. We had to remove this rig from the operating position 20 minutes before the start of field day. Heat is not a problem as we were in an air-conditioned room and we had not been generating RF. I am running firmware version 3.19 and reloaded it after the first time the front panel locked. I have looked through the manual but see no mention of these phenomena. Any suggestions would be appreciated. Jim Kauten, MD kaute...@me.com kau...@atnex.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Problem with K3 #353 at Field Day
Any suggestions would be appreciated. Sounds like the FP board may have developed a problem. Please contact k3supp...@elecraft.com for assistance. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 on FD
I'll throw in another plug for the K2. This was my first FD in over 30 years. I ran my K2 as a 1B/Battery/QRP/CW station out of my camper for the duration. This was the first time I'd spent quality time with my K2 since getting my K3 almost a year ago. I'd forgotten what a sweet little rig the K2 is: - Small...: Easily sat on a corner of the tiny table in my camper with plenty of room left over for logs and dupe sheets. - ... but not TOO small: Never had a problem operating the controls or finding the right button. - Easy to feed 1: Over 18 hours actual operating time on a single 12AH battery. Could have gone longer, but I ran out of juice before the battery did. - Easy to feed 2: I literally found a hunk of wire in the garage and threw it into a tree for an antenna. The KAT2 was able to tune it to 1.5:1 on 80, 40, and 20. Not a great performer, but still let me work stations from Alaska to Indiana on 5w. - Great performance. I'm really glad I didn't succumb to the temptation to sell it after getting the K3. 73 -- Joe KB8AP On Jun 29, 2009, at 9:33 AM, John Wiener wrote: I brought my K2 to FD at local W8MRC station for the 3rd year. It had quite an impact. The CW Ops couldn't believe the difference. I think we may have a few more converts. (Seems like I send this message each FD hi.) 73 John AB8O __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 #1170 at Field Day
The K3 was a hit a Field day, particularly among the CW guys. The phone guys liked it as well. A couple of guys here gave me a tip about temporarily changing the KPA3 menu to allow for constant fan operation. Temps were over 100 degrees Saturday afternoon. The rig fared better than most of the ops, it seems. I noticed when I set the K3 back up in the shack that the PWR was set to 8W. The last time I checked it was at 100W. It is easy to inadvertently change settings on those multi function buttons. The only issue of note that presented itself was the low audio output of both the headphone and speaker jacks. We tried several different speakers and I confirmed that the SPKRS menu was at 1 and that the AF GAIN was HI. At home this hasn't been an issue as my shack is pretty quiet and I use a pair of Bose amplified computer speakers. With the high level of ambient noise at the FD site, I found myself turning the AF to maximum or near maximum with either the external speaker and the BM10 headset I was using. Engaging the DSP attenuated the audio so much, it wasn't useable at anything above the F*-1 settings. I arrived at a solution by plugging the BM-10 headset into the speaker jack on the rear panel. This resulted in sufficient audio drive and I was able to use the headset at about 50% gain. I have seen mention of significant audio attenuation with DSP engaged and loss of speaker/headphone output. Is the low audio output perhaps a symptom of the same issue? Brad AA5CH __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] V3.19
Yep, same problem here with DXBase. Whenever I hit a callout and the mode is different than where the K3 is at, the offset comes into play whether I am going to SSB or CW. Once I am in a mode, say CW and I select another callout everything is fine. If I double click a callout when switching modes everything is fine. This all happens only if the Auto CW VFO offset on mode change is on. Not a big problem once you get used to it. 73, N2TK, Tony -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Iain MacDonnell - N6ML Sent: Monday, June 29, 2009 12:56 PM To: Brian Alsop Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] V3.19 It's because clicking on the spot results in (at least) two actions: 1) Set the radio frequency to 50.125 2) Set the radio mode to SSB Unfortunately the second step invokes the CW offset adjustment, and leaves you pitchHz off where you wanted to be. If your software set the mode before setting the frequency, it should work as you expect. I had the same problem, using the DXLabs Suite. ~Iain / N6ML Brian Alsop wrote: Using the CW offset feature to go from SSB CW modes . Works as advertised. However when I click on a spot when in CW mode to go to USB something is odd: Example: In CW mode at 50.110 Click on spot on 50.125 Radio goes to USB mode at 50.124.47 -- 50.125 minus CW offset of 530 Hz. Anybody else seeing this? I also wonder why one have to use reverse CW to get to an exact CW freq from USB frequency mode change. Yes, this was stated in release. However, why should it matter? I personally always use normal CW. 73 de Brian/K3KO No virus found in this outgoing message. Checked by AVG - www.avg.com Version: 8.5.375 / Virus Database: 270.12.94/2208 - Release Date: 06/29/09 05:54:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 #6708 Speaks
Hello All At 1717Z today, K2 Serial nr 6708 spoke it's first words. My thanks to KA9S, Jeff, for answering my VERY poorly sent CQ, on what seemed to be a dead band. I finally got back to building again early this month and got the last of the soldering done this weekend. Today I did the 40 mtr final alignment and testing. Everything went without a hitch. I sent a few TEST' signals to myself on the 706. It sounded really sweet. (The 40 mtr ant the K2 was using crosses 12 under the 160 mtr dipole the 706 was using. I expected massive overload of the 706 but it did ok. Conversly the K2 had no trouble dealing with the 706s signal even with the ATT off. Now on to the rest of the tune up procedure. But first the cover goes on and I take it with us to visit my dad, WA0ZWW. The visit is for other purposes, but he'll enjoy seeing the new rig!. 73, es TNX to the folks at Elecraft for the fun I've had so far. de KD0R, David __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] FOUND - Link to the headphone splitter/amp...!
Thanks to all who replied. The link I was looking for was: http://www.behringer.com/EN/Products/HA400.aspx And now, hopefully, I'll be able to retrace my steps to finding the link to the other op amp which is supposed to be much more robust in this type of service. Thanks again folks. 73, Tom __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] HI RFI Message - what to do?
If you have been reading the reflector for the past couple of days, the K3 we were using got a HI RFI message on the screen. Yes, the books says that someone is feeding the K3 more RF than it needs in the antenna terminals. The books states 1 or 2 watts is all that it will take. Yes, this is exactly what happened. The K3 was on 7040 and the Orion was on 3520. Each were on a horizontal antenna and we were no where near 1000 feet apart. The 2nd harmonic got the K3. Many people emailed me and said D25 is blown and it is an easy fix. That is OK...things like this will happen. (It was not my K3, but) What do you do if you get the message Turn off the rig immediately? Or, is it to late by the time you get the message? What is the parameter that the CPU is looking at when you get the message and how much time is there to do something? Or, should be keep some pin switching diodes in the shack from quick repair? The book is very unclear as to what all this means. What to do. Or any more information that what I've already stated. I wonder if this could be clarified a little by Wayne or Eric concerning front end issues in a FD type setting. I know the Multi-Multi guys figure this out, but heck FD is just about a free for all. Lee Buller PS: The k3 did kick A.. The New Kansas QSO Party - August 29, Sat 9am-9pm and August 30 Sun 9am-3pm CDT More Info at: http://www.ksqsoparty.org/ In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] HI RFI Message - what to do?
Lee Buller wrote: The K3 was on 7040 and the Orion was on 3520. A shorted 1/4 wl stub (~46' of Vf 0.66 coax) on the Orion 80m output would have given ~30 dB of attenuation on 40m. For best results stubs should be tuned to exact resonance using an analyzer (most tell you how to do this). Plan ahead for next year! http://www.k1ttt.net/technote/k2trstub.html 73, Bill -- View this message in context: http://n2.nabble.com/HI-RFI-Message---what-to-do--tp3176603p3176870.html Sent from the Elecraft mailing list archive at 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] K3s in 105F Field Day heat at K5WA
Both K3s in our 2A effort worked flawlessly in the 105F degree humid heat of southern Texas. We even ran RTTY and I saw the PA temp hitting 61C with no ill effects. We used N1MM and the integrated MMTTY interface to knock out 109 RTTY contacts, 1535 CW contacts and 608 SSB contacts. With bonus points included, we'll be in the 8800 point scoring range. Next year, we need to find a way to air condition our tents! ;-) Bob K5WA Houston, TX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K2 Rev B PCB - Does it contain the side-tone mod?
Ok, I do see an 82mH shunt choke on the input of the 380N. Thanks Don :) On Mon, 29 Jun 2009 14:02 -0400, Don Wilhelm w3...@embarqmail.com wrote: Duane, Those older mods have often been incorporated into the K2 design. You will find a version of this mod already on your K2 - it was incorporated into the board for all K2 above SN 3000.. 73, Don W3FPR dw wrote: Hey Gang, I read online yesterday that it may be that the K2 control PCB Rev-B might have incorporated the side-tone audio filter somewhere in advance of the LM380N chip, to produce a waveform closer to sine-wave. Does anyone know if this is true? Is there anyway of getting to look at a silk-screen pic for this board? Thanks Duane N1BBR No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.339 / Virus Database: 270.12.94/2208 - Release Date: 06/29/09 05:54:00 -- bw...@fastmail.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Best regards
I just wanted to say that the K2 is wonderful as a kit and as a radio. I want to thank you all, Don Scott and Gary for your support, Richard in Parts and the rest of the team.. You all made it fun, challenging and a learning experience. What else have you got?? Just kidding 73 Dick AD1G __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] HI RFI Message - what to do?
I like Bill's answer for a fixed multi-station setup. Not good enough for a roughly controlled enviornment of FD. Or when a friend drives up to your house running a KW mobile. I think the bottom line is what the receiver front end was designed to handle and how much head room there is from that point to HI RFI message TO the point of failure of the front end device. It would be nice to know these numbers. But Alass, we are confronted with the age old saying, when in doubt, protect thy self with back to back Hot carrier diodes on the receiver. This doesn't mean this solution won't have possible intermod problems in fringe high RF enviornments of FD, but you won't lose a front end. FWTW. Mel K6KBE --- On Mon, 6/29/09, Bill W4ZV btipp...@alum.mit.edu wrote: From: Bill W4ZV btipp...@alum.mit.edu Subject: Re: [Elecraft] HI RFI Message - what to do? To: elecraft@mailman.qth.net Date: Monday, June 29, 2009, 1:28 PM Lee Buller wrote: The K3 was on 7040 and the Orion was on 3520. A shorted 1/4 wl stub (~46' of Vf 0.66 coax) on the Orion 80m output would have given ~30 dB of attenuation on 40m. For best results stubs should be tuned to exact resonance using an analyzer (most tell you how to do this). Plan ahead for next year! http://www.k1ttt.net/technote/k2trstub.html 73, Bill -- View this message in context: http://n2.nabble.com/HI-RFI-Message---what-to-do--tp3176603p3176870.html Sent from the Elecraft mailing list archive at 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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Trade 706MkIIG for K2
I have a MkIIG with separation kit, mic, mounting brackets, cables, manual, box, and a Heil Traveler Single side headset/mic. Would like to trade for a K2. Mike AI4NS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 #1195 at Field Day
This K3 is 25 serial number units and 25 miles from the K3 Brad posted about earlier. So it was pretty hot here too. Supposedly a record temperature for the date, last set in 1952. That's one Field Day record I didn't want to set. I kept moving equipment around on my table to keep direct sun off the K3 and laptop. I was afraid to even look at the heat sink and FP temperatures. My K3 survived and showed no heat related issues even though I kept it QSOing or CQing at 100W CW for long periods. The main issue I had was strong RF fields, and I've had that about every FD regardless of rig. It was more an N1MM thing, as N1MM would hang up with key down if I tried to send from the log. Well, laptop thing really. So I did most of my sending with the paddle, which I didn't really mind since I miss using my paddle in some of these contests. One surprising thing though was that the K3's internal memory keyer would stick too. That didn't make any sense since I was using the paddle (K3 internal keyer) with no issues. The rig would lock into transmit mode with sidetone ON, but no RF output. Eventually I fixed the USB to serial dongle with three split ferrites, two passes each, and the N1MM plus the K3's memory keyer began working fine. Go figure. I had the same issue with not enough audio. I blamed it on the fact that I was using a pair of small stereo speakers, and hi-fi speakers can be pretty inefficient. I also went to the extreme of making sure the gain setting was on high. I used the internal speaker some and got plenty of volume, but it's pretty raspy, especially under FD pileup conditions. I think too that under open air outside conditions, you want more audio than you need in a small room. I always had the headphones handy when needed though. The overall performance of the rig under crowded conditions was very good. I have both the 400 Hz and 200 Hz filters and previously didn't think the 200 had much value to me, but it proved useful in digging out weak ones and also when SPing through crowded band segments. We had two CW ops at our site. I did 14 hours and the other fellow did 10 and we wound up with 761 Qs and 74 of 80 sections (even though they don't count). The antenna we used was a 180 foot dipole, center at 45 feet or so with 450 ohm line feeder through a Johnson Matchbox on all bands. Oh yeah, other evidence of RF problems, I got shocked once touching the brass base of my paddle and again grabbing a knob on the K3. That surprised me until I saw that the path was shaft thru set screw to finger. 73--Nick, WA5BDU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Problem with K3 #353 at Field Day
Jim, Is the K3 working correctly again now that you have it back home??? If so, I would question the power setup used on Field Day. Did you happen to check the voltages the K3 was seeing? Lots of times on Field Day power connections are questionable. The K3 does not like low voltages, which can often be the case on an outing like that. The fact that the other K3's worked O.K. may not be indicative, since you may have had a different connection setup, or even been on a different power connection. Just a thought! Dave W7AQK - Original Message - From: James R. Kauten, MD kau...@atnex.net To: Elecraft@mailman.qth.net Sent: Monday, June 29, 2009 10:02 AM Subject: [Elecraft] Problem with K3 #353 at Field Day We had 3 K-3’s at our field day QTH this year. Two worked flawlessly, however, mine; #353 developed some front panel issues. I have had no problems with my K3 prior to this. The rig would work as usual for a period of time then with no error messages; the front panel controls would not function normally. Here is a summary of what happens: Band—cannot switch bands up or down Mode—cannot switch mode Menu and Disp—do not work Xmit and ATU tune-- do not work RX Antàturns on NB Antàturns on NR All potentiometers work Push function of 4 knobs, shift, width, speed/mic, and CMP/PWR do not work VFO A knob—changes VFO A VFO B knob—changes VFO B A/B, REV, AàB—do not work PREàturns on notch, toggles between auto and manual AGCàplays contents of M3 voice keyer when on SSB Xfilàshows M1—M4 in display window NB, NR, NTCH—do not work SPOT—toggles between LO/HI and Shift/Width (shows LO and FC) CWT—toggles PWR and CMP settings in display AFX—toggles between LO/HI and Shift/Width (shows HI and BW) VàM, MàV—do not work M1, M2, M3, M4, REC—do not work RIT, XIT, CLR—do not work None of the long press functions work (yellow labels) I can power the rig off and on. The rig will intermittently begin working properly for a while then the front panel repeats what is described above. We had to remove this rig from the operating position 20 minutes before the start of field day. Heat is not a problem as we were in an air-conditioned room and we had not been generating RF. I am running firmware version 3.19 and reloaded it after the first time the front panel locked. I have looked through the manual but see no mention of these phenomena. Any suggestions would be appreciated. Jim Kauten, MD kaute...@me.com kau...@atnex.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 Fab Drawings
Is there a place somewhere that provides the drawings of the Fabs so that one can look at the schematic and then find the part w/o digging into the boards? Things such as this D25 issue. Once you hear about them roasting with too much RF in then it makes a person think that it would be a good idea to have one or two on hand and know where they are... But once you find a part its somewhat of a pain to go stare searching for them inside the radio... ~Brett __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] [K3] KPA3 mounting screw
Good evening, While installing the KPA module in my freshly built K3, I noticed the inside tooth washer on one of the mounting screws fastening the PA module to the screen comes perilously close to a trace. It is the screw closest to a board mounted trimmer, and the trace comes from a to-220 device. Is there something I overlooked, or is this a non issue? I didn't see anything on a basic search of the archives Thanks, Pete -- Pete Axson W4SEC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] [K3] KPA3 mounting screw
Hi Pete, That is version C KPA3. I commented on that and sent pictures to the support team a few weeks back. Yes either they need to go back to the other design or just use an split washer instead of the inside tooth washer. I choose to keep the inside tooth washers and just push it work all it was worth with my finger nail. I got it stuck the first time and had to loosen the screw to free myself. :-) The old PA didn't have this problem as the trace was move closer to the edge of the board. 73 de jay/w5jay.. Good evening, While installing the KPA module in my freshly built K3, I noticed the inside tooth washer on one of the mounting screws fastening the PA module to the screen comes perilously close to a trace. It is the screw closest to a board mounted trimmer, and the trace comes from a to-220 device. Is there something I overlooked, or is this a non issue? I didn't see anything on a basic search of the archives Thanks, Pete -- Pete Axson W4SEC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
