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

To: "Roger \(K8RI\)" <K8RI-on-TowerTalk@tm.net>
Subject: Re: [TowerTalk] Why plastic spreaders on a cage?
From: "Bill Aycock" <billaycock@centurytel.net>
Date: Fri, 17 Apr 2009 16:57:05 -0500
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Roger--

I just finished checking a 1' Dia. for 3.5 MH model. Now that I know (well, 
think) that the model runs OK, I will do more playing around.
Will yell if I get anything.
Do you know how many entries it takes for a 6 wire dipole for 80M with 2' 
conical ends? And--- it takes TRIG!!

Bill-W4BSG

----- Original Message ----- 
From: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
To: "Bill Aycock" <billaycock@centurytel.net>
Cc: "Robert Chudek - K0RC" <k0rc@citlink.net>; <towertalk@contesting.com>
Sent: Friday, April 17, 2009 4:03 PM
Subject: Why plastic spreaders on a cage?


>
>
> 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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