I have had temporary dipoles touch branches and there was no issue however
the areas touching were closer to the dipole center than the ends. So if you
can avoid having the ends touch it may work with regular THHN wire.
John KK9A
To: Tower Talk <towertalk@contesting.com>
Subject: Re: [TowerTalk] Polarity question..on a dipole
From: Doug Smith
Date: Fri, 31 Mar 2017 15:17:01 -0600
Voltage at dipole tips - it's a kind of interesting question.
I was thinking of putting a dipole in a stand of aspen trees which I do NOT
want to burn down. There is no way to route the wires to completely avoid
contact with the twig-like upper branches. And, I do run full power.
I did find some high voltage wire by Gore that is rated at 13 KV although
I'm
not sure that was at RF - might have been DC. It is insulated with PTFE.
Looked interesting..
The idea of looking at the feed point impedance of a 1 wavelength doublet
for a
first order approximation is a good one. I may try modeling that, just to
bring closure to my idea..
73,
Doug, W7KF
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