Topband: Teflon tubing in binocular ferrites

Jim Brown jim at audiosystemsgroup.com
Thu Jan 18 12:37:37 EST 2007


On Thu, 18 Jan 2007 03:51:09 -0500, David Sinclair wrote:

>It is true that some of the high perm cores are conductive.

Resistivity varies widely from one ferrite material to another. Some 
are such good insulators that Fair-Rite uses bare wire to wind coils 
through them (they call them Wound Beads), while others are highly 
conductive. The resistivity of all Fair-Rite materials is specified 
in their excellent catalog, which you can view and/or download from 
their website. http:///www.fair-rite.com

73,

Jim Brown K9YC







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