Date: Wed, 16 Mar 2016 11:39:01 -0700
From: Larry Loen <lwloen@gmail.com>
To: jimlux <jimlux@earthlink.net>
Cc: TowerTalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] "Magic" length from tower to first insulator
I could imaginably insulate my guys from the tower sections, because I am
using the Rohn brackets to attach them. I would have to find some suitable
material before the tower went up, but I have time for that if I know what
to select (would want it to be UV resistant if possible, though the bracket
itself will give some sun protection).
I _think_ this helps or at least simplifies the analysis, because it should
take the tower sections themselves out of the picture. If I understand the
discussion, it would also mean that it restores the tacit assumptions of
the original ARRL paper (albeit without Mr. London's sophisticated
modelling and analysis).
I also wonder if the second set of guys are grounded (which I intend to do
anyway), makes a difference in how the secondary lengths resonate?
WO7R
## Avoid grounded 1/4 waves..... OR floating 1/2 waves.
Put an insulator on each end of the top guy wire..and your
10 ft guy line is now a floating half wave..and resonates on
46.8 mhz. Remove egg at tower end ..and its now a grounded
1/4 wave... and resonates on 23.4 mhz.
Jim VE7RF
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