Topband: Bev. antenna cores

[Chuck Hutton]

Assuming you didn't transmit into it, it's almost impossible to saturate a 
ferrite toroid. Also, I don't see how saturation would cause the antenna to 
stop working, assuming "not working" means "no signal". With saturation, 
ferrites lose initial permeability but I've not yet run across one that lost 
it all and would not function to some degree.

I don't know about your location, but for me I lost transformers only due to 
nearby lightning. I tended to use very fine wire (30 GA or less) which could 
not take any nearby hit (a habit I have changed) - maybe you've suffered 
from that?


Chuck

----- Original Message ----- 
From: "linda doyle" <ldoyle at gwi.net>
To: <topband at contesting.com>
Sent: Sunday, October 03, 2004 3:40 PM
Subject: Topband: Bev. antenna cores


Gentlemen...how can one test a mn8cx core for saturation my ne/sw 2 wire 
bev. stopped working and I did everything but paint it to find the problem 
and everything appears to be normal the only thing left to do is check for 
saturation haven't a clue how to go about it,except wind all new 
transformers there are 4 stacked transformers 2 cores each transformer and i 
don't have any left however have ordered 16 new ones but there must be some 
way to test them otherwise how did that term originate? thanks for any input 
on the subject..  John K1GUN..
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