"Bill Turner" wrote in message
...
On Sat, 4 Sep 2004 14:57:09 -0700, "Andrey"
wrote:

Greetings to all the antenna experts here!
I want to create horizontally polarized antenna, low profile, located
above
large ground plane. And I need it to be omnidirectional (sort of) and
have
sufficient gain in horizontal plane.
My frequency of interest is 900 MHz. The ground plane is a roof of a car.
I tried loops, from 50 to 300 mm diameter, radiation goes up if I mount
it
above the ground plane.
Any ideas?
Thank you,
Andrey

__________________________________________________ _______

FWIW, horizontal polarization at 900 MHz won't get you far. Vertical is
preferred because horizontal is rapidly absorbed by ground loss. On the
other hand, if you don't *want* to get very far, use a vertical and just
reduce power.
This will be sad news to all the V/U weak signal ops who have consistantly
covered long distances using horizontal polarity.

Dale W4OP