RE: [amsat-bb] commutating antennas (was snip)

[Franklin Antonio <antonio@xxxxxxxxxxxx>]

At 05:33 PM 5/4/2002, Joe Leikhim wrote:
>Why not forget all this complex antenna switching and phasing stuff and
>just build the RF, IF and IF switchgear on a central cylindrical core .
>Attached above and below that core would the appropriate antennas(fixed
>to track earth). ...power and a limited number of control
>circuits via slip rings, optical interfaces or inductive circuits. I
>think that many commercial satellites are built this way.

Moving parts are very difficult in space.  Its worth a lot to avoid them.

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