On Wed, 20 Dec 2006 09:42:50 EST, Telegrapher9@aol.com wrote:
>I would recommend RG-174 coax. It is small, light, and inexpensive.
Yes, I was going to make the same suggestion. Or even an RG58.
Receive antennas are pretty forgiving about loss and even modest
impedance mismatch. What you DO want to carry is a selection of
ferrites to decouple the receive antenna from the coax. Best bet
would be a bunch of #31 2.4" o.d., 1.4" i.d. toroids, commonly
called FT-240 in ham lingo. Fair-Rite part number 2631803802. 14
turns of the coax around one of these cores makes an excellent
decoupling choke for 160-40 meters.
BTW -- parallel wire cable (including the glorified zip cord sold as
speaker wire) is a train wreck for RFI. MANY cases of RFI have been
solved by replacing zip cord with twisted pair. A twisted pair of
stranded THHN (house wire) is an excellent loudspeaker cable.
Jim Brown K9YC
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