Hi guys, More questions about my R4A restoration. I finished replacing the filter caps and replaced some other tubular caps and was delighted that there were no sparks when I powered it up. Thanks to Bill Frost I was able to get my passband shaft coupler reinstalled and it's FB now.
When I attempt to use the calibrator or NB the S-meter goes full scale (as if in mute) -- the receiver goes dead quite. The calibrator worked before I swapped caps. The NB never did work and always caused the meter to go full scale mute. Another odd thing is the tuning is extremely sensitive on SSB. I have to tune very slow to get the audio to be understandable. Sometimes it's near impossible to tune a SSB signal clearly. AM broadcast and CW -- no problem. I did a side-by-side comparison with my ICOM 746 and the R4A is receiving as good, if not better. And the overall audio is much more pleasing and adjustable with the R4A. I obviously have a problem with the calibrator and NB... and maybe the sensitive tuning is just the nature of an R4A... I don't know. Suggestions are welcome and appreciated. Joe WW8X
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