[TowerTalk] CM Choke

[Máximo EA1DDO_HK1H]

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 at contesting.com> en nombre de Carol Richards <n2mm at comcast.net>
Enviado: lunes, 9 de octubre de 2017 21:11
Para: towertalk at 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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