On 17-Mar-2005, "tom" wrote:

I get it, and then maybe once it's all set, I could put end-caps on the top
and the bottom of the vertical segment to keep it dry. Maybe it would be
good to put in some kind of fastener, too, holding the flexible braid
immobile against the interior of the downward-pointing vertical segment ---
before the installation of the end-caps, obviously.

Yes, I omitted those refinements as sort of obvious.

But does the horizontal segment have to be an entire meter, though? I think
I can remeber seeing those T-like, FM antennas mounted on large towers but
with horizontal segments that were shorter than a meter --- I think they
were slightly shorter than the vertical segments.

I chose the one meter length arbitrarily so that it would be about a half wave. The idea is that
the feedline should be kept at right angles to the radiator for some distance. A coil of coax where
the feedling exits the PVC might be a good idea to reduce coupling.

73,
-ken-