Quick update.
All the filter crystals on the RF and KSB2 have insulators installed.
The KSB2 was removed (jumpers installed across W2 W3 and C167 populated)
and the noise is still present.
Best Regards,
Jason
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Don,
When the first set of pictures were taken the audio output was in attenuate
mode with a minimal AF setting, the signalink Rx gain was set to 25% ish,
and the PC mic input gain was set to 25%. The only thing that changed
between pictures was the VFO. Last night I had a little time to double
I did a lot of testing to try and resolve and isolate the issue. So here are
all the details and sorry in advance for being so verbose. Also very green
to amateur radio. Got my ticket this year in January and the ink isn't even
dry. So please bear with me.
I purchased a QRP K2 (s/n: 00026,
Thanks Phil.
My wife is IPC-7711/7721 and had her inspect my work when it was complete,
so pretty confident there. That and I rechecked it several times since the
problem began. Removed the old crystals, cleaned up the vias with
solderwick, re-installed using insulator pads, and soldered the
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