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Re: [TowerTalk] Feedline (choke) question

To: jim@audiosystemsgroup.com
Subject: Re: [TowerTalk] Feedline (choke) question
From: Jack Brindle via TowerTalk <towertalk@contesting.com>
Reply-to: Jack Brindle <jackbrindle@me.com>
Date: Fri, 26 Sep 2025 16:17:27 -0500
List-post: <mailto:towertalk@contesting.com>
Sigh. I am fairly certain that I have seen, at NCCC meetings, 4” toroids in 
your preferred mix wound for testing.

The whole point is that they exist, even in better mixes for this purpose. 

But who am I to keep you from arguing against yourself…

73,
Jack, W6FB


> On Sep 26, 2025, at 2:37 PM, Jim Brown <jim@audiosystemsgroup.com> wrote:
> 
> On 9/26/2025 12:05 PM, Jack Brindle via TowerTalk wrote:
>> The 4” cores are slightly expensive, but available. Our friend KF7P will 
>> sell you one in mix 31 for $28.95.
> 
> My extensive measurements of chokes wound on these cores showed that they are 
> useful only on 160M and 80M.
> 
> 73, Jim K9YC
> 
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