Rob, Too many variables to give a good answer. Consider that the K3 plus Alpha 87A might be giving you RF Feedback which will create"strange happenings". The real question is -- "Does the same thing happen when driving a dummy load?" If the answer is "NO", then look for the solution in your antenna system.
Note that I normally respond to conditions where the transmitter is driving a dummy load. Other situations do exist, but may or may not be the problem - it all depends, and the input impedance of the antenna is a variable that can create erroneous information to be injected into the equation. KISS - "Keep It Simple Stupid" is always a good goal, it reduces the number of variables. 73, Don W3FPR On 4/13/2012 7:33 PM, [email protected] wrote: > I noticed the other night that when I was using one of my two K3s on 80 m > CW, in full QSK, there would be occasional snap-like audio sounds and I > would lose sidetone during a computer-keyed interval. The radio was still > putting out a signal but the sidetone and between-character RX signals > were muted too, until the sequence completed. I'm not sure it's related, > but occasionally that same K3 - on 80 m CW - causes repeated soft faulting > of the Alpha 87A it drives. I thought maybe something was screwy with the > antenna or feeds, but I switched to the other K3 driving a KPA-500, and > had nothing like that snapping sound and audio muting. Anyone have a clue? > > Rob K6RB > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
