I recently completed building my K3 and listening on a different transceiver in the shack, I also noticed a light hum/buzz superimposed on my 18-24 MHz CW signal at levels above 12, up to 100 watts, into a dummy load. Also using a switching power supply, Astron SS-30. I don't own a linear power supply to substitute. However when I switch to battery-only, the buzz is still present. So over time I'll try to verify with stations if this is just a "local", in-station phenomenon, or truly going out on the air. Propagation hasn't actually been good for these upper frequencies...
73 Rick N6CY John W2XS wrote: > > Is there a difference in the power supplies at the two stations? I had a > very similar bad CW report when I first got my K3 which was due to a > switching power supply that I was using. The note was bad at all power > levels on several bands. I bought an Astron RS-35A and the reports were > good. I still wonder why the switcher didn't work well since it was a > 12V, 24A supply. > > Good luck. John W2XS > -- View this message in context: http://n2.nabble.com/K3---bad-CW-note-tp1334054p1339315.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ 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
