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RE: AO40 3 March pass



Hello John

> Huh?
>
> The satellite is already transmitting a circularly polarized signal.

Particularly when offpointing during non-zero ALON/ALAT's (but also when
nearing perigee during low ALON/ALAT), spin modulation occurs which is due
to the fact that the observer is seeing the s/c's antenna off-axis and
therefore can be fairly eliptical if not linear and even reversed in some
extreme cases.

73 Howard G6LVB


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