Topband: Pennant Transformer

Frank Davis fdavis at nfld.net
Thu Nov 15 13:41:16 EST 2012


Many tnx to all who replied offline with advice and help.

I am on the right track and hope to complete the project today.

73 Frank VO1HP




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I am in the process of building a pennant.

I'm stuck on the right way to wind the transformer.

I have Type 73 binocular cores but am not clear on how to do it.
I am feeding the loop with RG6 and my terminating resistor is 910 Ohm 2%.
The transformer will go at the point of the pennant and should be 12:1 ratio ?
For 75 Ohm cable K6SE info sez - 2 turn primary and 7 turns secondary.

I see on W7IUV website he sez - wind the primary on first.
 --- so for  two turns I do this:
one turn is: -  up through one side and down through the other side.
another turn is - continue up one side and down through the other
--- that makes two turns...is that correct?

Winding 7 turns would follow same procedure winding the wire over the primary wire
and have the leads out the opposite end of the core from the primary?

I hope you can follow my primitive description.  Am I on the right track?

73 Frank VO1HP
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Topband reflector - topband at contesting.com



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