If the idea of the coiled-feedline balun is to prevent the outer braid from
turning into a radiating element, wouldn't it be preferable to position the
coils in the feedline next to the antenna feedpoint instead of at the
opposite end of the horizontal segment? Or would there be harmfull,
inductive coupling to the the coils if they were that close to the
feedpoint?
Also, if one were to use a ferrite-bead type balun (not the type that the
feedline is wrapped around) instead of a coiled-feedline type balun, do you
think it would it be necessary to have electrical contact between the
ferrite-bead and the outer braid (necessitating stripping the outer
insulation)?


--
73
Tom H
VA7FAB

Tom, you are making this waaaay too complicated. Just solder up a
ground plane on an SO-239, hook a coax to it and start transmitting.
You don't even need welding rod. I have used coat hanger wire in the
past. Forget about baluns, beads and inductive coupling. We're not
launching a spacecraft here. Keep it simple.

Dick - W6CCD

On Fri, 18 Mar 2005 20:17:24 GMT, "tom" wrote:

If the idea of the coiled-feedline balun is to prevent the outer braid from
turning into a radiating element, wouldn't it be preferable to position the
coils in the feedline next to the antenna feedpoint instead of at the
opposite end of the horizontal segment? Or would there be harmfull,
inductive coupling to the the coils if they were that close to the
feedpoint?
Also, if one were to use a ferrite-bead type balun (not the type that the
feedline is wrapped around) instead of a coiled-feedline type balun, do you
think it would it be necessary to have electrical contact between the
ferrite-bead and the outer braid (necessitating stripping the outer
insulation)?