That is curious, have you looked at the list archive? I did a quick look and there are a number of hits that make reference to L30 and magnetic coupling. Are you doing this on a power supply or a battery? I think the vco shielding mod also addresses this issue. Good luck, Joe N9JR
Stephanie Maks <[EMAIL PROTECTED]> wrote: Well I was too quick when I said I was done. I've got a problem in my K2 that is really noticable in CW, although it is there in all modes. When tuning a CW or plain carrier signal, instead of getting just a single pure tone, there is a second tone in there modulating with the original one. It makes the CW tones sound like a buzz instead of what they should sound like. With both the K1 an K2 side by side, both of them plugged into dummy loads, I can turn on my XG2 and move it near the two dummy loads, and on the K1 it sounds like it should, a single pure tone, like a bell. On the K2 it sounds like a raspy buzz. What's worse is when I key the K2, the CW it is sending has that same raspy buzz in it, sounds terrible on the K1. The second tone 'follows' the frequency tuned, what I mean is if I tune up 50 or 100 Hz from the XG2 signal, so the pitch goes up, it's a higher-pitched buzz, and likewise if I tune down 50 or 100 Hz it's a lower pitched buzz - not two distinct tones. I have to sheepishly admit that I heard it when I did the 40M receiver test, back in alignment part 2. It was about 1 or 2 am and I was using the XG2 as a signal source, and I heard the raspy sound and I assumed that my XG2's battery was dying and making it oscillate wierd. I never thought to check if the XG2 was working properly and that the fault might be in the K2. So, I know the fault must lie in something that was installed before the end of RF board assembly step 2, that is common to both transmit and receive. Any suggestions as to where to look, based on these symptoms, would be most appreciated. Thanks and 73 de Stephanie va3uxb K2 # 5311 / K1 # 2132 _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
