[BC] FM Ferrite choke

[Bob Tarsio]

Tom:

The material I spoke of is actually iron. If you go to Amidon's site you can
get a bunch of information on what would be appropriate. They make wrap
around choke cores that seem ready made for your application too. 

Regards,

Bob 
 
www.Broadcast-Devices.com
 

 

-----Original Message-----
From: broadcast-bounces at radiolists.net
[mailto:broadcast-bounces at radiolists.net] On Behalf Of Bob Tarsio
Sent: Thursday, February 01, 2007 10:02
To: 'Broadcasters' Mailing List'
Subject: RE: [BC] FM Ferrite choke

Tom:

67 or 68 type material would probably be most appropriate for the FM
broadcast band. Amidon has a good explanation of the core materials on their
web site. Here is a URL for that page: 

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

I have used this material to lower the resonant frequency of the pre
selector in a Motorola Micor pre selector operating at 146 MHz. I dropped
them inside the coil form and epoxied them in place. So I know they are
effective at roughly 150 MHz. Amidon used to have coil winding data too so
you can actually design a custom choke for your application. 

Good luck with this. 

Regards, 


Bob Tarsio
President
 
www.Broadcast-Devices.com
 


-----Original Message-----
From: broadcast-bounces at radiolists.net
[mailto:broadcast-bounces at radiolists.net] On Behalf Of Tom Bosscher
Sent: Thursday, February 01, 2007 09:09
To: Broadcasters' Mailing List
Subject: [BC] FM Ferrite choke

    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 bosscher


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_______________________________________________

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Cable-Connectors-Blocks-Racks-Wire Management-Test Gear-Tools and More! 
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