On 1/21/2020 9:32 AM, EDWARDS, EDDIE J via RFI wrote:
Use coaxial cable when making RF chokes for antenna systems.
Parallel wires work fine for winding chokes. There's no need for
shielding -- the field from the choke is confined to the core.
At least half of the chokes in my station are wound with a pair of
Teflon insulated #12 stranded silver-coated copper wire. The rest are
wound with RG400. The Cookbook includes data for #12 THHN as a lower
cost alternative.
http://k9yc.com/2018Cookbook.pdf
73, Jim K9YC
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