How about a 20-meter J-Pole (hear me out) - it is an end-fed half-wave ----
just mount it horizontally
it feeds from one end - so there you go.

Hal
w4pmj

"hello" wrote in message
...

HI
I want to put a dipole for 20m in my garden.
A tree and the home roof will be ok to fix the extremity.
My problem is the feed point : If IA center feed it , the feed line will
just hang at the center of the garden, something not acceptable by the
YL :-)

So I'm looking for a way to feed it by one "side".
I could endfeed it, but impedance matching is not so easy at such a high
impedance.
Then, after reading lots of post in this newsgroup, I read about the
sleeve antenna : generaly a vertical dipole where one leg is a sleeve.
Coax enter in the sleeve to the center feed point.
I think this antenna could work horizontaly and for HF and solve my
problem. Now, hanging horizontaly a 5m long metallic sleeve is surely
not a good idea, but at HF , I thing that man could replace the sleeve
by some wire cage.
So I end up with the idea of a cage or biconic dipole , with the coax
entering horizontaly in the middle of the cage to the center.

What do you think of this idea ?
How many wire for the cage 2 (a bowtie), 3, more ?
Do you have a better one for my particular constrains ?

Lots of questions, but I'm sure you will have lots of answers !

Thanks in advance

Thierry
F4DWV


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