Fw: Re: [Antennas] Rotary Joints for Ladder Line

[Sandy and Kees Talen]

The "rotary joint" for ladder line which I've been using for many
years now is 450 ohm ladder line to the tower, line fed up the 
tower through 4" sections of radiator hose on 1ft+ plexiglass 
standoffs, around the rotor in a large "U" inside heater hose,
and tied directly to the 3 element beam. Works great (good 
tuner at the shack end). I've also tried a balun at the antenna 
and didn't notice any difference. All I can say is try it. Another 
solution (a little easier) might be coax to the antenna, choke 
balun at the antenna, around the rotor with the coax, 4:1 balun 
(easy to make) from the coax to the balanced 450 ohm ladder 
line. This eliminates the "U" ......just try it. I run 150W or less
with this setup, good signal reports all over the world.

73s  Kees K5BCQ