Topband: Tophat? Does it have to be at the top?

[W5PR]

The HIGHER the beam is on the tower, the more top loading it (the same size
beam) will provide.

Chuck W5PR


----- Original Message ----- 
From: "Earl W Cunningham" <k6se at juno.com>
To: <Cqtestk4xs at aol.com>; <mike.harris at horizon.co.fk>;
<topband at contesting.com>
Sent: Tuesday, June 08, 2004 3:46 PM
Subject: Re: Topband: Tophat? Does it have to be at the top?


> Bill, K4XS wrote:
>
> "I have several 200-foot towers with lots of HF stacks.  I asked that
> question about a year ago when I was considering using them as verticals.
>  Almost unanimously, the replies were that it would not be an effective
> way to go.  The general consensus was that the first big antenna the
> tower saw, "would be the end of the line" as far as loading went."
> ==========
> I also once thought that the bottom beam of a stack was the only one that
> was effective in top loading a shunt-fed tower.  I changed my opinion
> after modeling numerous shunt-fed towers and found that all beams in the
> stack make a significant difference in the amount of top loading effect,
> not just the lowest one.
>
> 73, de Earl, K6SE
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