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Topband: a box of ferrites

To: topband <topband@xxxxxxxxxxxxxx>
Subject: Topband: a box of ferrites
From: Michael Walker <va3mw@xxxxxxxxxxxxxx>
Date: Wed, 31 May 2017 21:51:46 -0400
List-post: <>
This group is clearly one of the most technical groups around and if this
off topic enough, please kill it.

The question is that if you have a box of ferrites with no labels on them,
how could you measure their ability to be used as a choke.  Yes, you could
measure them and look them up assuming they came from one vendor.

You have the usual ham tools plus a spectrum analyzer with a tracking

Does anyone have a tried and true method for determining what their choking
impedance might be?

Mike va3mw
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