[TenTec] Omni VII Heading Back to TT Tomorrow-RX Audio Hum ProblemPersists

[Roy]

> Upon a cold start the audio in the speakers has a distinct a/c hum that
> is multiplies 10 fold when the tune button is pushed with or with the
> tuner in line, loading into a dummy load. It's deafening.



Is it 60 Hz or 120 Hz or what?  How do you explain having a 60 Hz oscillator 
within the rig? Surely it comes from an external source?! Your power supply 
might be misbehaving?

73,   Roy    K6XK