Check mouser.com. i bought some and i think they were $6 to $8 dollers each.
Chuck Gooden - K9LC
-------- Original message --------
From: john@kk9a.com
Date: 09/20/2017 10:11 AM (GMT-06:00)
To: towertalk@contesting.com
Cc: k4to@arrl.net
Subject: Re: [TowerTalk] 40M rotary dipole
2.4 OD mix 31 cores are significantly less money elsewhere.
John KK9A
To: Dan Maguire via TowerTalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] 40M rotary dipole
From: Dave Sublette <k4to@arrl.net>
Date: Wed, 20 Sep 2017 10:31:14 -0400
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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