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Re: [TowerTalk] Why plastic spreaders on a cage?

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Why plastic spreaders on a cage?
From: Adam Shirley WJ4X <wj4x@amsat.org>
Date: Fri, 17 Apr 2009 21:56:41 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Plastic is cheap and easily mass produced.

   73!
    -Adam
     WJ4X

Roger (K8RI) wrote:
> 
> The cage dipole simulates a conductor of much larger diameter than any 
> of the single wires, or even their total and the ends are tied together. 
> That being the case, other than simplicity and weight, why use an 
> insulator for the separator?  How about a thin metal band, Aluminum 
> ring, or what ever?    Wood has been used, wood soaked in paraffin as 
> well as other materials, but I've not seen any metal used.  A disk would 
> be out except for small diameters due to the aerodynamic problems. 
> 
> As a personal opinion I'd stick with 6" and larger diameter cages on 75 
> and 40 for the increased band width. Actually I thin 1' would work well 
> on 75.
> 
> 
> 73
> 
> Roger (K8RI)
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