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Re: [TowerTalk] Aluminum radials

To: Bill Turner <>,
Subject: Re: [TowerTalk] Aluminum radials
From: Nick Pair <>
Date: Fri, 14 Jul 2006 11:02:09 -0700 (PDT)
List-post: <>
Yes I have heard of this. Years ago when I used it I think it was called zinc 
chromate and was a primer for aluminum. This maybe different to what you refer 
to, but I have also seen the stuff in aircraft and surplus military radio gear( 
the jungle proofing was different) on Al panels. I don't think it would survive 
the direct burial test because somewhere it would be scratched and breakdown at 
that point. I've never seen a conductor with this type of coating but it maybe 
in use somewhere. ;-)
  Thanks for reminding me of this product. I have some aluminum I was thinking 
of painting ( bare aluminum dish on tower to stop corrosion in the acidic rain 
we have here) with spray paint and was wondering if it would stick. I know it 
will over chromate primer.


On Fri, 14 Jul 2006 00:38:43 -0700 (PDT), you wrote:

> Aluminum is a wonderful metal, they just haven't yet figured out how to make 
> it hard and corrosion resistant and still high conductivity.

------------ REPLY SEPARATOR ------------

Actually they have figured it out. The chromate conversion coating
process makes aluminum corrosion proof even in a high temperature salt
spray environment, and the coating is highly conductive. It's widely
used in the aircraft industry but may not be practical for radials.

Bill, W6WRT

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