On Fri, 18 Aug 2006 10:02:01 GMT, "Tom"
wrote:

Hello all ,

I would like to install a VHF-UHF antenna on my motorcycle . It's a Suzuki
GSX750 . I did some tests with a Diamond NR-770H and it works well . The
only problem is that the antenna is to big for such a bike .
Afterwards i did a test with a Diamond NR-77 . The antenna is about 43 cm
and that's about the size i would like to use .
The problem i have with this antenna is the swr , it's to high .

Anyone an idea how i can solve this problem ?

Many thanks .

Tom


Use a 1/2 wave antenna. Many marine shops stock VHF 1/2 wave antennas
for mast top mounting on sail boats. The beauty is no counterpoise is
required. I think some looking at Randall / Larson you will also find
they make 1/2 wave antennas.

For the typical automotive installed mobile whip you will need a
counterpoise. Generally on the auto that's not a problem as the body
is metal and presents a nice large ground plane.

Gary K8IZ