Chris,
That condition is normally the result of improper alignment of the BFO
frequencies for the upper sideband.
There should be no difference is width for LSB and USB that could be
blamed on a part.
Use an audio spectrum analyzer (Spectrogram for instance) for best
results when aligning the filters, and set the low frequency "knee" of
the passband at 300 Hz. If possible use a broadband noise generator at
the antenna connection, or you can often use "dead band noise" (no
signals within the bandpass).
73,
Don W3FPR
On 11/5/2022 6:41 PM, Chris wrote:
Hello,
I have three K2's, and one of them has a very strange symptom. It works
well in LSB and CW, but USB transmit audio seems very narrow. Receive
audio in all modes works well with no issues.
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