?I recall, nore or less, the AVC that AM Broadcast radios used to use.
?But maybe it was more AGC.
?They use a dual diode/triode. The triode for first audio amp, one diode? for detector, and the other for the AVC, which, I think, wired into the cathode, or maybe grid circuit(s) of IF amp and? converter, plus RF amp that some radios had. So we didn't get our eears blasted off when going from a weak station to a strong one.
I'll need to take another look at the most common circuits used for the cheap AC/DC radios. Five tubes, with one being the rectifier for the main power.
