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RE: commutating antennas (was snip)

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). Surrounding the inner core would be the rotating
cylindrical mass of the batteries, solar panels, house keeping equipment
etc. That outer core would feed 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.

The inner core could be hermetically sealed to protect against
contamination from outgassing batteries or propulsion systems.
Joe Leikhim K4SAT

"Jazz is not dead.  It just smells funny." -F.Z.

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