It could be 60 Hz. It sounds like 120 though. A local ham with
band scope said 60 Hz and not a perfect sine wave. He said it was
riding on the signal about 20 dB down. This is an amp I acquired
recently and the hum problem has existed since I started using it.
This may be related. Previously, I also replaced both blocking
doorknobs. One of the them was cracked and blew the CB when it
arced the first time I first used it.
----------------------
Ron Schuster N9RC
Cincinnati, OH
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