"Peter O. Brackett" wrote in message
...

What would be the response of an axial mode helix antenna or say crossed
90 degree fed dipoles or any other "synchronous" CP antenna to such a
non-synchronous wave produces by a rotating antenna?

the same as for a linearly polarized wave. since the rotation frequency is
much lower than the carrier frequency (unless you are considering elf
transmissions) during any time period consisting of several cycles of the
carrier it would appear stationary to the antenna.


Would the response of a syncrhronous axial mode helix be less than that of
a sympathetically rotating receiving antenna?


it wouldn't matter. now if there were two linearly polarized antennas
rotating such that their polarizations stayed in sync that would at least
reduce the fading caused by one rotating and the other being stationary.
but only if the path between them didn't produce any rotation or
randomization of the polarization, so essentially only for short paths with
no reflective multi-path or other effects. seems like more trouble than its
worth... what would you gain from it anyway?