Quote:
Originally Posted by radiotvnut
... but, the FM band has a strange problem in that the audio rapidly "skips" or "fades in and out at rapid intervals" The problem is less noticable when tuned to a weak station. First, I'll change the electrolytic caps and see if that makes a difference. ...
|
This is only a guess, but many FM demod circuits (ratio detectors mainly) have a small electrolytic cap in them. Around 10uF at 25V, and caps like this and of that vintage dry out and lose capacitance. Try replacing it, and it shouldn't require realignment of the detector circuit. I don't think the value is all that citical.