Topband: 2:1 TRANSFORMER QUESTION
Mr. and Mrs. Magoo
magoo at isp.ca
Fri Dec 9 09:00:02 EST 2005
I posted earlier concerning a problem I was having with 2:1 transformers
wound on BN202-73 binocular cores. The VSWR increased rapidly above about 5
Tom, W8JI suggested that the problem may well be cores which are not, in
fact, a 73 mix. Last night, I wound up several more transformers from a
newer batch of BN202-73 cores, and all of them perform well up to 20 mhz or
so. Only the first two transformers I wound had the poor response above
So, it appears that a couple of cores which are not 73 mix got into a
previous shipment I received.
All is well! Thanks to Tom for solving the problem. I guess we often
forget the first law of survival: "never assume"!
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