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Re: [TowerTalk] CM Choke

To: Carol Richards <n2mm@comcast.net>, "TowerTalk@contesting.com" <TowerTalk@contesting.com>
Subject: Re: [TowerTalk] CM Choke
From: Máximo EA1DDO_HK1H <ea1ddo@hotmail.com>
Date: Tue, 10 Oct 2017 09:15:39 +0000
List-post: <mailto:towertalk@contesting.com>
Hi Carol,


43 mix works fine for CM chokes, but it depends the frequencies you need to 
cover.

Best procedure is to use a VNA and "tune" the choke for best choke impedance 
over the required frequencies.

Basically the number of turns, diameter, etc.


I've been testing some 43 mix cores some days ago, and depending on those 
variables, the choke will present the higher impedance over different 
frequencies.

You can hava a look at next link; http://foro.ea1ddo.es/smf/index.php?topic=3.0


I am sure more experienced colleagues will you explain further next.


73, Maximo


________________________________
De: TowerTalk <towertalk-bounces@contesting.com> en nombre de Carol Richards 
<n2mm@comcast.net>
Enviado: lunes, 9 de octubre de 2017 21:11
Para: towertalk@contesting.com
Asunto: [TowerTalk] CM Choke

Hello all...


Quick question... I know 31 mix is better, but I have 8 cores, 43 mix. I
was thinking of 5 cores, 6 or 7 turns RG213 Or RG8X. Yes or no?


Carol

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