[RFI] Ferrite bead disintegration

[Pete Smith]

I took apart a home-made 100 bead receiving-only common mode choke 
yesterday.  As I peeled off the electrical tape I was surprised when 
each bead that came out of the wrapping disintegrated into dozens of 
fragments.  I think I saved about 5 beads out of a 100-bead choke.

What could have caused this?  The choke was used over 300 feet away from 
my transmit antennas, and never used for transmitting.  Morte to the 
point, can I expect to see the same thing in the feedpoint chokes of my 
80m 4-dipole lazy vee array, which have been up and in use for ~10 years?

-- 
73, Pete N4ZR

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