As I recall, installing the Inrad filter to fix key clicks in the OMNI VIs necessitated adjusting the front end's alignment to accommodate it. And this, I perhaps recall incorrectly, made for other p
Not really true in my experience John. The BFO oscillator alignment is exactly the same. I believe the only step actually recommended was to touch up the carrier null adjustment, which is a very simp
Same experience here Installed the 2.8 INRAD filters and LOVE them for general ssb use However, you may also benefit from touching up the bfo frequencies and carrier null which it probably needs anyw
Paul, can you say more about those 10-turn trimmers? Do you have a part number and was it an exact drop-in fit? You're absolutely right about it being touchy but it's amazing how deep a null you can
Barry Try Bourns 3296Y family. The 10k is 3296Y-1-103LF. The second one is either 3296Y-1-101 (100 ohm) OR 3296Y-1-102LF (1k ohm). Got them at DigiKey Sorry for the ambiguity but the values in my rad
A hunch on BFO trimmer frequency drift. It might not be the trimmers but any associated fixed disk ceramic caps. Try slight heating of any one by one. If a big jump happens, that one might be suspect
Thanks I had planned a part by part evaluation next time the radio is open or I have some spare time As is it isn't bad enough to jump on, just recognize it is happening It starts cold about 20hz off