[TowerTalk] More fun with ground plane modeling

[Jim Brown]

On Wed,9/10/2014 11:22 AM, David Gilbert wrote:
> If you think of an elevated ground plane (elevated high enough to 
> minimize ground coupling effects) as a vertical dipole with the bottom 
> portion splayed out (which is pretty much what it is functionally),

Not quite, Dave. A vertical half-wave dipole puts more of its power into 
low angles than does a quarter wave antenna. I've done a couple of 
modeling studies to show this, to study the effect of mounting height, 
and to compare verticals and horizontal antennas at various mounting 
heights.

http://k9yc.com/VerticalHeight.pdf  and

http://k9yc.com/VertOrHorizontal-Slides.pdf

73, Jim K9YC