Well. I put in the noise blanker, and it was recognized, but receive
was mostly deaf. I checked the caps suggested in the manual, pulled
the toroids and re-tinned them, and reheated all the solder joints
with no improvement. So I pulled the noise blanker, and tacked back
in the resistors and W5 -- and it's still deaf. Mostly deaf -- I can
hear stations on 40, particularly with the pre-amp on, and one or two
on 80 and 30. It seems to be completely deaf on the higher bands,
though that could be the weather.
The resistors R88, 89, 90 are just tacked in. Could a bad connection
there produce this? Could it be a component somewhere nearby, maybe
damaged while changing resistors? Could I have knocked it out of
alignment somehow? I'm thinking that I should re-align next; are
there things I should check before doing that?
And is there a way to test the noise blanker without pulling the
resistors and starting this all over again? Tapping Q21 with a
screwdriver didn't produce any audible noise (and still doesn't, with
the NB out).
Lots of questions -- I'm sure grateful for the people on this list,
who are so incredibly helpful.
K2 #5578, QRP, with SSB and tuner.
Peter N8MHD
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