In message , dave
writes
Chevy454 wrote:
I want to put my 2M 5/8-wave mag-mount on the trunk lid, which slopes
down at 20 degrees. I am concerned that most of my signal is going
into the ground or outer space.
Can I bend the long whip so it stands vertically? Should I do it?
does the downward slope of the ground plane leave a problem
unaddressed?
Ken KC2JDY
5/8 Wave requires a ground, but not a ground plane. I'd get a proper
clamp, but bending will probably work OK.

I'm not really sure what you mean, but a '5/8' w/l is actually resonant
as a 3/4 w/l, and does need a ground plane to work against. On a car,
this is usually the roof or the trunk lid. Bending the antenna so that
it stands vertically will probably have negligible effect on impedance
or radiation.

But why the trunk lid? Surely the roof is better? On a vehicle, every
inch above the ground helps.
--
Ian