> I have solved the problem with the help of the good folks at TenTec. The
> problem was I was seeing a duplicate PSK signal about 500 hz away from the
main
> signal. It had been suggested the radio was overdriving the sound card
and
> generating some kind of spur or harmonic.
>
> Here it is:
>
> If you run PSK you must set the audio to Left > Main and not "Both"
>
> I had the audio set to "Both." What was happening was the sub receiver
was
> also being played back through the jack in the back of the Orion even
though I
> had the volume on the subreceiver turned all the way down. The jack in
the
> back is a line out and it plays everything. Since the subreceiver was
also
> tuned to VFO A but just happened to be set on UCW instead of USB, the
signal it
> put out was 500 hz off from the main receiver.
>
> Once I set the Audio to Left>Main, there was no need for any additional
> attenuation and everything looks fine.
This is one of my beefs with the Orion. The radio has extensive audio
routing options for the audio from either receiver to the headphones or
speaker, but there way to select which audio goes to the AUX jack pins
(there are 2) on the back and the audio to either of those pins is not
intuitively related to the front panel audio routing. You would think that
TT would provide audio routing options for the AUX jack, but from what I've
been told there is no hardware to provide that routing. Sounds like a
pretty major oversight in a TOL rig.
Mark
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