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Re: [TowerTalk] Dielectrically lenghtening the boom

To: Andy <ai.egrps@gmail.com>
Subject: Re: [TowerTalk] Dielectrically lenghtening the boom
From: jimlux <jimlux@earthlink.net>
Date: Fri, 18 Dec 2009 21:15:45 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Andy wrote:
>> Take a Yagi, and fill the space between elements with a material which its
>> dielectric constant is less than 1.0 (air's).
> 
> You probably meant to write "greater than 1.0".  I'm not aware of materials
> with dielectric constants less than 1.0.
> 

There are composite materials which have apparent permittivity <1 for 
limited frequency ranges.
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