On Wed, 17 Jan 2007 11:26:18 -0500, "Yuri Blanarovich"
wrote:


The question is why is he modeling antenna in free space??
Planning to go there anytime soon???
Why would anyone model especially vertical antennas in free space (besides
trying to see how the donut looks)?
Verticals especially work with ground in forming the pattern and impedance.
I use and model my verticals on earth. JMO

73 Yuri, K3BU

On my "Things to do List" I plan to spend some time with EzNec and a
ground plane in free space.

What I hope to better understand is the effect of the the quality of
the ground plan in the are between a modeled "real ground" and a
modeled "perfect ground".

I don't know the free space model will be valid, but I hope to learn
from the exercise.

I could just ask another series of "dumb questions" here but I fear
some of those who are so generous will tire of my noise!

When I modeled the vertical with a perfect ground I was expecting half
a vertical dipole and that is not what I got!

John Ferrell W8CCW