08-22-2013, 08:38 PM
This one sounds like a real, well you know what Johnny. As it motorboats on all bands including the FM, I would think a problem in the AF section. Did you try pulling tubes (assuming it's not an AC/DC radio) one at a time to see when it stops? I would try the second detectors to try to isolate the front end from the AF section. Just sounds like the problem is in the audio section. Then again, what do I know?
Jerry
Jerry
A friend in need is a pest! Bill Slee ca 1970.
