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Re: Topband: Call for antenna ideas

To: hgchapoton@gmail.com
Subject: Re: Topband: Call for antenna ideas
From: Tree <tree@kkn.net>
Date: Mon, 17 Sep 2018 09:34:13 -0700
List-post: <mailto:topband@contesting.com>
If your tower isn't high enough to get a high impedance looking down the
tower to ground on 160 meters - a possible solution is to make a trap using
something like 20 feet of tower and a variable capacitor.  Adjust the cap
for maximum current in the drop wire - or minimum current below the trap in
the tower.  You can construct a transformer to measure the current in the
tower with some ferrite around one tower leg and a couple of windows of
wire with a resistor (something like 50 Ohms should work - but not
critical).

That will help make sure most of your current all goes up the tower instead
of down.

In other news - my 97 foot tower at the new QTH now has the MonstIR on top
of it and will be loaded with a gamma match before the PreStew in October.

Tree N6TR

On Mon, Sep 17, 2018 at 9:27 AM hg chapoton <hgchapoton@gmail.com> wrote:

> Maybe check out the N4KG reverse fed gp?
>
> http://lists.contesting.com/_towertalk/1998-02/msg00057.html
>
> and many other links.
>
> greg/na8v
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