Leroy, how have you grounded the antenna? I think I have an almost identical set up and the ground out of the AH-4 is to the frame on the DP. I get bouts of RFI off and on, ocassionally triping the GFI, that I have not been able to track down. The radio, also a 7000, is grounded to the same ground as the inverter, but the length of the grounding strap is about 10 feet or so.
Next time out I'm going to take a four foor copper stake along and drive it into the ground as close as possible to the widow and run the radio's ground to it.
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