Dave:
My Scout does the same thing, but it is pretty faint, so I don't worry
about it too much. My guess is that it is caused by RF getting into the
audio stage and being rectified. Might even be affected by how the
wiring harnesses are dressed inside the rig. It probably be cured by
additional bypassing or shielding around the audio amp. Let us know how
Ten tec fixes it.
73
Bob WB2VUF
Dave Roscoe wrote:
>
> I would appreciate any comments from the knowledgeable and helpful TENTEC
> gurus on this site.
>
> I have been having problems with a SCOUT. It is the 3rd one that I have
> owned, and the previous rigs did not display this anomaly. When using in the
> SSB mode, the receiver does not totally mute, while transmitting , and you
> get significant sidetone audio back through the speaker, making it difficult
> and distracting . The volume of this audio is independent of the volume
> control so you cannot even crank down the Audio Gain when you are
> transmitting to quiet it. (Remember the old days with the separate receiver
> and transmitter when doing a changeover ?? !! ) It is presently at the
> factory, and the Service Dept tells me it is quite common in the earlier
> versions, which difficulty was eliminated with a Surface Mount Technology
> audio board that was used in later production. (Unavailable now, out of
> production)
> They say they have "quieted it down a lot" but I am anxious to see how much.
>
> Anyone have any comments ?
> 73 Dave W1DWZ
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