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Re: [TowerTalk] Change in Frequency As Antenna Height Rises

To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] Change in Frequency As Antenna Height Rises
From: Dan Maguire via TowerTalk <towertalk@contesting.com>
Reply-to: Dan Maguire <djm2150@yahoo.com>
Date: Wed, 1 Jun 2016 19:19:03 +0000 (UTC)
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Steve G3TXQ wrote:
>>> If you have the time, you might want to try plotting resonant frequency vs 
>>> height for a linear half-wave dipole and comparing it with one bent into an 
>>> almost closed square, as in the "cobweb" design. You'll find the cobweb 
>>> shape is _much_ less dependent on height. 

and:
>>> Just found one a plot I did a while ago:
http://www.karinya.net/g3txq/temp/dipole_vs_cobweb_tuning.png

I see you beat me to it!  You and I discussed this several months ago.  Here 
are a few relevant posts from a qrz.com thread:

https://forums.qrz.com/index.php?threads/woud-a-disguised-cobweb-work-the-same.492573/page-8#post-3635652

https://forums.qrz.com/index.php?threads/woud-a-disguised-cobweb-work-the-same.492573/page-8#post-3635663

https://forums.qrz.com/index.php?threads/woud-a-disguised-cobweb-work-the-same.492573/page-8#post-3636039

Dan, AC6LA

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