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You want 5 turns of rg213 solenoid wound on 4.25" former for 11mtrs,

The coax choke will be reactive, if you are unlucky it can resonate the coax braid & make cmc worse,
I have cured multiple peoples cmc with 5 turns of 213,

a ferrite ring of the right size & material wound correctly is none reactive,

have a look at this chart from steve g3txq,
green with a black line under it is high impedance none reactive.

http://vtenn.com/Blog/wp-content/uploads/2016/12/choke_impedances_g3txq.png

[QUOTE="bob85, post: 760907, member: 18"] You want 5 turns of rg213 solenoid wound on 4.25" former for 11mtrs, The coax choke will be reactive, if you are unlucky it can resonate the coax braid & make cmc worse, I have cured multiple peoples cmc with 5 turns of 213, a ferrite ring of the right size & material wound correctly is none reactive, have a look at this chart from steve g3txq, green with a black line under it is high impedance none reactive. [URL]http://vtenn.com/Blog/wp-content/uploads/2016/12/choke_impedances_g3txq.png[/URL] [/QUOTE]

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