In article .com,
N9NEO wrote:
How about a simple notch filter?

Sounds like his problem is rectification in corroded metal junctions.
Maybe a little gutter bashing is called for. Also a good check of all
the connectors and splices in the antenna system. And any guy wires,
cyclone fences, roof flashing, telephone wires (used and unused), etc.
Maybe even the telephone, which has all sorts of diodes and is connected
to a lot of wire. Or the TV cable.

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)