"Cecil Moore" wrote in message
Richard Fry wrote:

"Cecil Moore" wrote
Passive non-resonant elements have very little effect.
That's what allows a lot of multi-band beams to work.

As a point of reference, the radiation patterns of sidemounted FM
broadcast transmit arrays are affected by a non-resonant mounting
structure (the tower) -- especially for vertical polarization.

True, and please note that I was talking about *antenna
elements* not support structures.
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But geing closer to the driven element(s), probably even non-resonant
antenna elements may have more affect on the net antenna pattern than that
produced by a supporting tower further away.

RF