Rick Brashear wrote:
Jack,
You might check R7 and C23 to be sure they are in tolerance. Swap the
two 6CL6 tubes (V3 and V4) with each other (or with known good ones) and
see if that helps.
I tried new tubes but that didn't help. I am going to put it back on
the bench and check the other components.
However, as I am not interested in CW, wouldn't it make sense just to
disable the keyer?
Also, the bias supply seems to be an after thought. Does it have
anything to with the keyer and why was it added?
js
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