"Tom W8JI" wrote:
My point is that does not tell us what happens at the ionosphere.
If I just take a simple program like EZNEC, and use a small sense antenna
out in the distance, the results follow the trend you posted from the
helicopter. ... AFAIK, we do not have measurements of arrival angles useful
for long distances or how lower angles from verticals might apply
to that.
Just to point out that we don't have measurements of arrival angles at the
ionosphere proving the fields shown in a NEC far-field analysis, either.
Yet people seem to accept a NEC far-field pattern as gospel, even though it
does not accurately show the radiation launched by a monopole at elevation
angles below 10 degrees or so.
R. Fry
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Topband reflector - topband@contesting.com
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