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@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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