[BC] FM Ferrite choke

[Paul Christensen]

>    Does anyone have the part number for a Amidon or other brand ferrite
>core that they use to choke out an FM signal from a telephone line card?
>Something that I can wrap the line cord through a few times?

Tom,

I would use material mix #43:

http://www.amidoncorp.com/aai_ferritecores.htm

Jim Brown may jump in with an answer but this data agrees with his 
excellent white paper on the matter:  See "Suppression at VHF" on p. 14.

http://audiosystemsgroup.com/RFI-Ham.pdf

Paul