[Amps] RF Feedback Problem

["Patrick Hoppe" <phoppe@wi.rr.com>]

Hello all,

 

I have a problem with RF feedback on 20, 40, and 80 meters.  If I run my
AL-811H, I get RF feedback on those bands.  Nothing on 10 & 15. Everything
is grounded very well, but it is still there.  Any ideas?

 

Particulars:

Kenwood TS 570D

Gap Titan DX Vertical

Ameritron AL-811H

Heil Pro-set Plus head phones & boom mic

 

Thanks,

 

Pat

WW9R

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