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Re: [TowerTalk] Protecting Aluminum Antennas

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Protecting Aluminum Antennas
From: jimlux <jimlux@earthlink.net>
Date: Fri, 18 Mar 2016 16:40:00 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 3/18/16 4:06 PM, Roger (K8RI) on TT wrote:
Is there anything that will keep an antenna shiny and bright, besides
not putting it up?
I have often heard clear Krylon mentioned, but from my experience, it is
very short lived.  Three coats, allowed to dry between coats only lasted
a few months if that.
Around here (central MI) the shiny Al turns to a dull finish in a month
or two.

Alodyne does last and looks good, if you like a shiny gold color and
have both time and ambition.  I have used Alodyne on aircraft elevator
hinges.  It's a very labor intensive (tedious) process. The antenna
would certainly stand out.


There's variety of chemical conversion coatings in all manner of colors; one of them must be "silver".

You might look at what they use for mirrors used with solar collectors: it's important that they stay high reflectivity. It might be some sort of clear aluminum oxide coating that's formed by carefully controlling the oxidation process.

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