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A relay inserted in an antenna wire can be operated via a pair of
wires (20 gauge twin speaker cable) which, in parallel, form the single antenna wire. At the shack end, DC power is fed into the pair of wires via an RF choke. The choke consists of a pair of wires (more 20 gauge twin speaker cable) wound on a ferrite rod. Been there. Done that! I used a single-contact reed relay. ---- Reg. |
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