On 06 Mar 2007 05:40:40 GMT, Ed
wrote:

I wonder how to calculate or guess what it is at all.

Hi Ed,

The more practical consideration is: "What can you do about it?"

The loss is going to be in frame and chassis connections where the
loss is going to predominate. Another matter is getting over the idea
that what sticks up the air is the principle part of the antenna. You
may as well get used to the idea that it is only a tuned radial for
the bigger element, your RV. And what polarization is that RV going
to present to the world? (Probably horizontal.)

73's
Richard Clark, KB7QHC

The more practical consideration is: "What can you do about it?"

Richard,

Your point is understood, but I was asking the question because I am
playing with the ARRL program, mobile.exe and one of the parameters to
enter for mobile antenna design input is ground loss. I simply was
wondering how that entry was figured, since it plays an important roll in
the program's calculations.


Thans.

Ed K7AAT