On Thu, 02 Mar 2006 19:35:15 -0500, Amos Keag
wrote:

Cecil Moore wrote:
Dan Richardson wrote:

Roy is quite correct in stating that a vehicle's body behaves as one
side of a dipole. A lopsided dipole to be sure, but one half the
antenna just the same.


Seems the truth might lie somewhere in between. If the ground
plane of a vertical antenna is near the ground, there are
losses. If the ground plane of a vertical antenna is located
1/2WL above ground, the losses are a lot less. I'll bet that
if the vehicle were located 1/2WL in the air, the efficiency
would increase.

Kind of tough though going under power lines, bridges and overpasses :-)

That depends.... If you take cecil up on his idea, you may go over
them.... of course, that you may want to be on the low bands when you
cross some bridges....
--
73 for now
Buck
N4PGW