[Elecraft] Toroid Balun Cores

[Ron D'Eau Claire]

Yeah, that's the problem with ferrite baluns. They have relatively few turns
because of the very high permeability of the core material. A crack destroys
the permeability, so you no longer have a functioning balun. 

Back in the dark ages we had air core baluns. They were HUGE - an HF balun
might take up a couple of cubic feet of space - but they were impervious to
such failures since air doesn't saturate or crack, Hi! 

73,

Ron AC7AC

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of n5ge at n5ge.com
Sent: Saturday, October 15, 2011 5:30 PM
To: Elecraft
Subject: [Elecraft] Toroid Balun Cores

I'm refurbishing an old antenna here and the toroid in the matching balun is
cracked in several places.  Will that affect the toroid performance?

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member
 

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