[TowerTalk] Protecting Aluminum Antennas

[Robert Harmon]

I like the idea of spraying on a protective coating.  Glyptal clear 
insulating varnish spray was suggested earlier and was reported to last 
quite a few years when sprayed on aluminum antennas. I have done a 
little research on clear insulating varnish and found two that might be 
suitable.    One is Glyptal 9620 which may be the one that was reported 
here earlier, and the other is Sherwin Williams S00600.  Both products 
are spray on clear insulating varnish.  They are glossy though if this 
is an issue.  If they will last as long as the one reported earlier I 
will give one a try.  Here in the SF Bay area aluminum corrodes pretty 
quickly,  I would love to find a coating that will work for my aluminum 
antennas.  Any experience with either of
these ?

73,
Bob
K6UJ





On 3/21/16 5:34 AM, john at kk9a.com wrote:
> I agree, why do you want it shinny? All of the 6061-T6 tubing that I buy
> comes with a dull finish and it looks great in the air.
>
> John
>
>
> To:	towertalk at contesting.com
> Subject:	Re: [TowerTalk] Protecting Aluminum Antennas
> From:	David Gilbert <xdavid at cis-broadband.com>
> Date:	Fri, 18 Mar 2016 17:03:23 -0700
>
>
> Why on earth would you want it to be shiny? Seems like it would be more of
> any eyesore to any neighbors that way. It certainly doesn't make any
> difference electrically.
>
> Dave   AB7E
>
>
> On 3/18/2016 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.
>
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