In a message dated 1/19/2006 5:19:06 P.M. Pacific Standard Time,
rohre@arlut.utexas.edu writes:
If you insulate the line conductors and make a BIG loop of it on a stand
off piece of PVC pipe, it easily rotates without wrapping around
the mast. The standoff looks like a letter "T" made of PVC pipe.
To those of you who have QST libraries.... look at the pre-WW2 schemes
for feeding beams with open line.... our fathers and grandfathers were no
dummies....
At the antenna end of the open line you feed a fixed loop under the beam,
and the beam then has a close spaced loop right above it... inductive
coupling - and no problem with twisting feedlines....
As the proverb goes, "nothing new under the sun"....
w8au
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