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johntrett
johntrett

Posted: Thu Jul 23, 2009 11:18am

Post Subject: earthing my arials

I would like to transmit H.F. from my narrow boat (I'm a Radio Ham)but am worried about electrolysis when I connect the antenna earth to the boat hull (perfect ground plane!) any ideas?

Tony-B
Tony-B

Posted: Thu Jul 23, 2009 5:24pm

Post Subject: earthing my arials

i have no idea about HF, but I know most GRP boats (if not all) connect their VHF earth to a ground plate bolted through the hull and we hear very little or nothing about ground plates falling off or being eaten away. The surface area of a narrow boat hull is far greater than a ground plate so any corrosion would be expected to be spread over a large area. I have no idea if any induced currents in the aerial when the set is turned off will be directed to the ground but I would have thought that unless you spend hours per day on the set you would not be likely to experience problems. However I must stress this is way outside my area of competence. Tony Brooks

johntrett
johntrett

Posted: Tue Aug 11, 2009 2:22pm

Post Subject: earthing my arials

thanks for trying Tony, I guess its suck it and see. I'm hoping the anodes don't dissolve too quick thanks again John

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