[Amps] Guidelines.....toroids for tank ckts
Colin Lamb
k7fm at teleport.com
Sun Mar 25 09:31:37 PDT 2012
Toroids do not need to be wound on powdered iron or ferrite. A core with no permeability works. The advantage of such a core is the self-contained energy. You can wind a core on teflon or some other material. The disadvantage is that more wire is needed.
A number of years ago, I made an antenna tuner for field day and wound the coil on a bagel. It worked fine and got people's attention. Much easier to wind on week old bagels.
That may have been the same year my final was a 5U4G.
73, Colin K7FM
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