On Mon, 5 Sep 2005 09:16:24 -0500, John N9JG wrote:
"Bob Sawyer" wrote:
I just bought a very old, verticle antenna. The ant. is aluminum and
very coroded.

Is this just a cosmetic problem, or will the corosion affect the
radiation/reception of RF?

Since the insulation on wire antennas doesn't affect their
effectiveness, I'm thinking the corosion wouldn't be a problem; but my
working-class logic has gotten me in trouble before. G

Will painting an aluminum antenna decrease it's effectiveness, or not
matter?

[ Incidious top-posting corrected ]

Aluminum oxide is an excellent insulator.

And, for more than a century, folks have been radiating RF through
insulators. What did THAT have to do with the OP's question?