But all I have is a couple of t200a cores.

"Cecil Moore" wrote in message
...
Fred W4JLE wrote:
Using a T200A-2 for a 1:1 balun, what is the optimum number of turns and
best wire size? 200 watts max power.

#2 material is a good choice for inductors, not so good a choice
for a balun. I bought a commercial balun made from #2 material.
It did not perform well over all of HF. #2 is powdered iron.
Suggest a ferrite like FT-240-61 or a W2DU style choke.
--
73, Cecil http://www.qsl.net/w5dxp

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