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Re: [TowerTalk] Question regarding electrical connectivity of frozen tel

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Question regarding electrical connectivity of frozen telescoping aluminum tubing
From: john@kk9a.com
Date: Thu, 18 Jul 2019 14:27:20 -0500
List-post: <mailto:towertalk@contesting.com>
I agree on both counts. Scotch-brite pads work well for cleaning up old tubing. I have built many large homebrew Yagi's using old 6061 aluminum tubing. Steel wool can leave metal partials embedded into the aluminum that can corrode, Scotch-brite has no steel. After owning a station in Aruba and seeing the effects of severe corrosion, I try to avoid unnecessary dissimilar metal contact. Aluminum and copper are not close together on the galvanic table. I know that some of the big multi contest stations are using copper anti-seize on their antennas but I use Penetrox.

John KK9A



Joe Subich, W4TV wrote:


I would not use *either* steel wool or copper bearing anti-seize.  Both
copper and steel will set up electrolysis with the aluminum that will
cause future conductivity and mechanical problems.

Stick with thee scotch pad and an anti-seize made specifically for
aluminum.

73,

    ... Joe, W4TV

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