Hi K2ers, Has anyone got any comments to make about internally generated birdies in the K2? I have only just had a look at what my K2 produces because during a QSO with a JA on 40m Long Path a few mornings ago, who was playing chicken at 7.0000 plus gnat's eyebrow, I was getting constant QRM - unkeyed carrier - and he was weak weak. Much blue smoke about guys who dont use dummy loads. Brain finally arrived and remembered a comment in the manual about a weak birdie at 7 Mhz. So, put a dummy load on the K2/100 and indeed QRM was from the birdie. So went looking for other birdies in case K2 needed re-alignment. I found:
Scratching noises at 3524 and 3572 as tuning was varied (all freqs are to nearest kHz) Plop and constant at 3590 (sounds like a PLL locking and then letting go as tuning knob is moved) A good plop at 3990 (PLL only holding for a small shift in tuning) Healthy one at 4000 ( to be expected) Twins at 7000 Twins at 10.170 Twins at 14.171 A good plop at 14.350 S9 Plop and constant at 14361 (grateful that it is out of band) Twins at 18.172 Twins at 28.000 Good plop at 28.277 Single carrier at 29.483 Have not done any number crunching yet, but I suspect that the "Twins" have something to do with +/- 4 Mhz oscillators +/- something else. The "plops" worry me a bit. Dont want to plop on transmit. All the birdies that are in-band are strong enough to cause "QRM". Are these birdies found in all K2s, or have I not got something properly set up? 73, Geoff GM4ESD _______________________________________________ Elecraft mailing list Post to: [email protected] 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
