Date: Sat, 19 Mar 2016 08:53:51 -0700
From: David Gilbert <xdavid@cis-broadband.com>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Protecting Aluminum Antennas
I'm not advocating anodizing antenna elements, only disputing that it
makes any difference electrically, Anybody not capable of abrading the
anodizing at the joints shouldn't be putting up antennas anyway.
Dave AB7E
## agreed, simply grind off the overlap portion with emery cloth etc.
Now this all assumes that the tubing was anodized on the outside only.
## back in the late 70s, I had a spray bomb of this stuff, called
high voltage acrylic plastic, made by GE. Came out clear.
It was the bomb. Even used it on air variables on a friends
160m shunt fed tower. Previously it would arc with just 100
watts, (and tuned to flat swr with low power). After spraying
it with the GE glop, it would not arc with 1.2 kw ccs.
## I used it for all sorts of stuff, including hv supplies etc, or anywhere
you wanted a cheap and fast method of beefing up HV stand off.
## Then built a HB 10m yagi, using 1 inch 6061-T6 tubing..and
.875 inch tips. ( 1980). Tubing was scrubbed with sos /jets scouring pads,
( used for scouring pots and pans) till the tubing gleamed. (6061-T6 is gunky
since its oil quenched, done in an oil bath). Then rinsed with garden hose
and dried in the sun.
Then spayed the GE glop on all the els for an experiment. They stayed
shiny and clean, and just started wearing off just a few years ago.
## So it will easily last 30 years. Problem is, I have never been able to
find
it anywhere, and have casually looked over the last 15 years, to no avail. I
anybody
knows where to buy it, let us all know.
## Dunno what GE put into the mix, but it was the best stuff out there. 30++
years
of exposed to water, ice, UV, snow, dirt etc is good enough for me. It was
also used
to make a gamma match for yagis, just by spraying it on the inner al tubing.
Jim VE7RF
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