I've heard this as well. Mostly when doing QSK with the Sub Receiver on, and
even more so when in Diversity Mode. I think that it has to do with your
Xmitted signal being heard by the receiver. Wayne had adjusted this at one
time, but it seems to be an issue again.
I find that if I turn on the NB it helps reduce it.
> Date: Tue, 27 Apr 2010 17:07:06 -0700
> From: [email protected]
> To: [email protected]
> Subject: [Elecraft] QSK THUMPS?
>
> When my K3 switches between T & R in full QSK mode, I hear audio thumps.
> [The tramsmitted signal is apparently clean with no clicks; I always get
> good signal quality reports.]
>
> Now, My K2 has no such thumps; you can't tell when the radio switches
> between T & R by listening to the audio.
> The transmitted cw sidetone sounds just like any other cw signal, with
> no thumps or other noise.
>
> I would like my K3 to be the same.
>
> Is there anything I can do to attenuate the K3's audio thumps?
>
> eric
> VA7DZ
>
> K3 3620 +
> 500 W ICOM amp
>
>
>
>
> --
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