[Elecraft] SSB How do I adjust audio?

[Don Wilhelm]

Glenn,

I'm not certain what you really mean by "moving the filter a little further
away from the center", because with SSB you do not normally want to 'center'
the filter as you would for CW.  The filter bandpass should be centered
between the lower and upper audio frequencies that you want to
transmit/receive.  In most cases, the center of the SSB passband should be
about 1300 Hz.

When using Spectrogram for SSB, I set markers for 300 Hz and 2300 Hz and
adjust the BFO so that the corners of the passband on the OP1 filter are as
close to these two markers as I can get them.  Sometimes it takes a bit of a
compromise, but for most voices, these corner frequencies are very close to
correct.

I once have had muffled audio on transmit caused by RF in the shack (I was
operating with an attic antenna about 15 feet from the K2 at the time - no
wonder I had problems!!!).  If you suspect anything like that, you might
want to connect a counterpoise wire for the band(s) you are having trouble
with.

73,
Don W3FPR

----- Original Message -----
>
> .... I tried using SSB
> today. I am getting muffled audio reports. I have set the OPT1 filter for
> USB and LSB using spectrogram on 20 meters for transmit audio as a
starting
> point. I have tried fine tuning the transmit audio with an on the air QSO
> with John K7FD. I was able to improve the muffled  audio some by moving
the
> filter a little further away from the center. If I go further with the
> filter the audio gets worse. The best setting is 142 on LSB which is a
> setting of 49140.1. My audio is still being reported as constricted and
> metalic sounding. This was confirmed by two stations I had a QSO with. How
> can I improve the audio from being metaical and constricted? I have the
most
> recent firmware for the SSB board which is one of the first SSB
boards.This
> problem occurs both with the amp and without the amp.
>
> Thanks for any help,
> Glenn WA7SPY
>
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