OK, two more things:
DO the same test but, as you unplug the power supply, short the wiper of the AF gain pot to ground.
Also, try normally shutting the radio off with the switch but in the AM mode position.
Gary
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On Mar 20, 2025, at 1:22?AM, Mark N2DMI via groups.io <markkiziuk1@...> wrote:
OK Gary I turned both gain and volume up to full blast and unplugged the rig and it does not make that noise.
Mark
