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Re: [TowerTalk] Chokes, toroids and coax (Oh my!)

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Chokes, toroids and coax (Oh my!)
From: kq2m@kq2m.com
Date: Sat, 08 Oct 2022 19:13:24 -0500
List-post: <mailto:towertalk@contesting.com>
Hi,

I want to thank everyone for their responses, photos, insight and suggestions which were overwhelming in number and with loads of excellent information - It was Like drinking from a firehose!

Thanks to K9YC, N2TK, KK9A, KC2G, EA1DDO, K1HT, W7RY, N2WQ, N5ZO, K1XX, NA6O, K8LX, N1PGA. (My apologies if I left anyone out).

What a great group!

73

Bob, KQ2M





On 2022-10-04 11:39, Jim W7RY wrote:
Mouser for the cores.

I recommend RG-400. It has a stranded center conductor vice the
RG-142, which is a solid conductor. RG-400 is easier to wind and stays
put.

Make sure you look for some RG-400 at Dayton. There is always some
there. Sans that, check eBay or the swap sites QRZ and QTH.
73, Jim W7RY


On 10/4/2022 11:32 AM, kq2m@kq2m.com wrote:
Hi,

I am in the process of deciding on materials to use in making the new K9YC recommended chokes (thank you Jim!) for for my yagis, 4-squares and for EMI suppression purposes.

What I want to buy is:

31 material Toroids, I believe this would be Fair-rite part #2631803802 2.4" OD  1.4" ID rings
RG 142  Coax
RG 179  Coax
RG 400  Coax

Does anyone have any recommendations from whom I should buy these materials?

I see the 31 material toroids for ~ $9 - 10 if I buy 25 or so

RG142, RG179, RG400 vary enormously in price - and possibly also in quality.  I don't know one manufacturer from another.

I would appreciate any recommendations/details as to whom you would buy from (or have bought from) and who you would avoid.

Also, what/who would you recommend for small boxes in which to house the toroid?

Tnx & 73

Bob, KQ2M
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