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Re: [TowerTalk] 40M rotary dipole

To: towertalk@contesting.com
Subject: Re: [TowerTalk] 40M rotary dipole
From: Richard Thorne <rthorne@rthorne.net>
Date: Wed, 20 Sep 2017 10:22:16 -0500
List-post: <mailto:towertalk@contesting.com>
Check out Balundesigns.com

Nice chokes ready to go in many different configurations.  I've been using them for years.  Very well built and quick to ship.

Rich - N5ZC

On 9/20/2017 9:31 AM, Dave Sublette wrote:
Thanks for all the suggestions on the RF choke.  I read the article by K9YC and 
concluded that the best approach wold be to wind RG8X around 6 Fair-Rite toroids made 
from type 31 material and 2.4 inches in diameter.  The big problem is they are listed 
at over $17 each from the distributors.  I will need 18 of them eventually.  6 each 
for this dipole and two more yagis.  That’s a large price tag, but still 
cheaper (and better performing) than the commercial units available, according to K9YC.

I have (again at the suggestion in the paper by K9YC) sent a request for quit to Fair-Rite, asking 
what quantity I would have to buy in order to get “a decent price”.  It might work out 
that I could make a large purchase and offer kits of toroids to the group.  I’m not looking 
to make money.  I only want to have a good choke at the lowest price I can find.

I may put the antenna up with a temporary choke on it and replace it when/if I 
can get the toroids.

I will keep you informed as to what I find.

I appreciate your inputs on this project.  It’s been fun.

Dave, K4TO

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