Re:
"A stack of three large yellow powdered iron torroids
wound with #10 awg wire will loaf @ the 5kw level."
We're talking about using a 4 to 1 un-un transmission line transformer
on this thread. The appropriate core material for this application is
ferrite, typically #61. Broadband transmission line transformers require
high permeability cores. Reference for this is "Transmission Line
Transformers" book.
73, Roy K6XK
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