My models that were different with and without a mast above, I modeled these at different heights. It seems I just happened on the lucky height at 20 ft originally as at 10, 15, 25, and 30 feet the radiation patterns were much closer to consistent. I'll post their results here for
10 ft
[photo=medium]6396[/photo]
15 ft
[photo=medium]6397[/photo]
20 ft, this is what was shown above
[photo=medium]6398[/photo]
25 ft
[photo=medium]6399[/photo]
30 ft
[photo=medium]6400[/photo]
Question, are you suggesting using only shorter masts than what the height of the antenna would allow? Or perhaps do this in Free Space? We can't put the mast under the earth and I would be hesitant to put it as anything other than straight below the vertical antenna as the mast would skew the radiation pattern. (That is not to say that all real life connections go straight down to the earth from said antenna, for example a chimney mount in the middle of a roof.)
I guess I am asking if you could explain your idea in a little more detail so I can better represent it it in models?
The DB
