Hello all,
I've been hiking with Guy, N7UN, and as some of you know he's a rocket
on the trail. He usually brings along a tri-band diople to use on the
trail. His dipole is a 40m dipole and he just connects less wire for 30m
and 20m. I thought I'd build one and try it out.
I started with a 20m diople and tuned it. The wire is # 24 gauge
stranded whit with 19 strands. For the center I used a panel mount BNC
connector. After tuning 20m, I tied a fishing swivel to the 20m end and
also installed a female snap connector. I then did the same for the 30m
connecting wire, but used a male snap connector on both wire ends. I
then connected the wires and tuned 30m. Next I did the same for 40m.
I now have a dipole that works great with my KX1 on 20m, 30m and 40m. If
I want to work 20m only, I just put up the basic diople. If I want 20m
30m, I add a short piece to both ends. If I want 20m, 30m and 40m, I
then add the last wire piece on both ends. Or, I can put the dipole up
as a 40m antenna and just disconnect the jumpers to change bands. In
fact I just worked VE2PID on 40m. The whole antenna without coax
weighs-in at around 3 oz or less.
Thanks for the idea Guy, N7UN!
72,
Roo Bear Ed, WA3WSJ
PB # 2
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