On Tue, 13 Mar 2007 11:15:55 -0400, Buck
wrote:

I have a situation where I would like to install a vertical wire above
a fiberglass pole I have in the center of the yard. However, I must
keep the coax off the ground so I can only feed it about 7 feet from
the ground so people and the mower can get underneath. (rental
property).

I want to setup a 20 or 30 meter vertical and run ground radials from
the base of the pole where the wires can be buried. Is it possible to
feed the antenna above the ground plane? for example, I have ground
radials connected to a seven foot vertical wire, the shield side, and
the center side of the coax would continue upwards to the top, or
appropriate height on the pole.

Thanks
Buck
N4PGW

It sounds workable but the feed impedance is pretty high.
You might match 20 meter operation with a quarter wave feeder.
You could also mount a 20 meter ground plane at 7 feet off the ground.

John Ferrell W8CCW
"Life is easier if you learn to
plow around the stumps"