On 5/8/2020 5:28 PM, w5...@comcast.net wrote:
I turned the Amp back on and the noise came back.

Is your station properly bonded? It should be, for a lot of reasons, especially noise and safety. It's also the LAW! Study this tutorial.

http://k9yc.com/GroundingAndAudio.pdf

On 5/8/2020 5:41 PM, w5...@comcast.net wrote:
> only one antenna hooked to it, and that’s a sommer XP808 log fed yagi.

You should have a very good common mode choke at the feedpoint. Guidelines here. http://k9yc.com/2018Cookbook.pdf

73, Jim K9YC




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