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RE: DIGITAL modes



> stations at C-band through a linear transponder. The gateway stations
> connect to the terrestrial ISDN network. The INMARSAT terminal uses
> offset-QPSK modulation with 1/2 rate FEC for a bandwidth of

What sort of power/antennas do you find necessary for this sort of
transmission?  Might be worth playing with this sort of idea, and either
reworking it, or merely taking the useful bits (like the CODECs) and using
them in a protocol more suited to our needs.
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