[RFI] New to the Group

Cortland Richmond ka5s at earthlink.net
Thu Feb 24 18:30:05 EST 2005


There are two very common ferrites in 'EMI' beads, one optimized for 100
MHz or so, and the other for around 300 MHz.  The sellers may not know (or
even care) which mixture they're selling, so testing before buying a lot of
Mystery Mix RF Fix sounds like a good idea. 

Cortland 

> [Original Message]
> From: A. Sewell <n5na at att.net>
>
> Just remember you get what you pay for.  I bought a bag of these and 
> tested them per K0BG's procedure ( http://www.k0bg.com/beads.html ) 
> using an MFJ-259B.
>
> I don't know what mix they are but they are definitely not 43 or 31.  




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