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Re: [TowerTalk] How Helically Wound Verticals Really Work (was : Vertica

To: towertalk@contesting.com
Subject: Re: [TowerTalk] How Helically Wound Verticals Really Work (was : Vertical dipoles)
From: David Gilbert <xdavid@cis-broadband.com>
Date: Thu, 19 Nov 2009 11:49:36 -0700
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
How so? 

Even a 0.5 inch cross section the length of a shortened 40m or 80m 
antenna adds up to more area than the cross sectional area of a coil, 
with a greater percentage of it up high where the leverage is greater.

And as someone else here said, it is easier to build a strong vertical 
out of aluminum tubing than any kind of insulator that would be required 
for a helically wound antenna.

Dave   AB7E





Roger (K8RI) wrote:
>
>   
> But a center loaded vertical has a high profile, high wind drag, and is 
> more fragile than the helically wound vertical.
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