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,
[hidden email] 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
>
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