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Old January 9th 09, 06:58 AM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jul 2006
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Default Does NEC-2 model wires as solid or hollow?

Art wrote:
"------in conjunction with my beliefs which shows radiators as not being
parallel with the surface of the Earth where others refused to check in
any way."

I`ve erected countless horizontal antennas. They worked as expected.

I agree that the ionosphere scrambles polarizations so that a distant
signal may have been launched from either a horizontal or vertical
antenna and be received almost as well on an antenna of the other of
those polarizations.

Line of sight propagation is different. The same polarization is needed
for linearly polarized antennas at both ends of a path. This is
experience, not opinion. I`ve experimented with polarization and
optimized countless terestrial microwave paths. I found I could aim dish
elevations with a carpenter`s level and never improve by trying to
adjust for maximum limiter current by refining the polarization
adjustment. The antennas were already parallel at both ends of the path.

Tending to cross-polarize line of sight antennas increases path loss.

Best regards, Richard Harrison, KB5WZI

 
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