[Towertalk] Shunt feed crank up

[dan hearn]

Dana: I gamma feed my 131 ft crank up on 160. I have the coax arms with
yagi coax and rotator cable runing down through them. I clamped a piece
of square aluminum tubing to the mid level coax arm with 2 hose clamps
and dropped a nr 10 wire down from the end of it. The extension is about
4 ft long. A vac variable tunes the gamma for an SWR under 1.5 over the
lower part of the band. Your tower is much shorter and you will probably
need a different tap point. You might want to try an Omega match. Should
work fine.

73, Dan, N5AR


Dana Roode wrote:
> 
> Hi all,
> 
> How hard would it be to shut feed a 55' crankup tower with 10' mast and
> C3/D3W for 160m? I could add some top loading wires.  I read that the coax
> to the HF antennas should be run through the center of the tower, but mine
> are held by the coax arms and run outside the tower.  Is this a real issue?
> 
>   Dana, K6NR
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