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Nov 5, 2013 at 16:09 comment added Pete NU9W @WalterUnderwoodK6WRU - yes, thanks. The one I did uses ferrite cores.
Nov 5, 2013 at 15:41 comment added Walter Underwood K6WRU You can build a current balun/choke with a lot of ferrite cores on the coax (as you describe), or with a coil of coax, or with a toroidal transformer.
Nov 5, 2013 at 13:46 history answered Pete NU9W CC BY-SA 3.0