venerdì 24 novembre 2017

Inmarsat D+ / Inmarsat's satellite paging system

Inmarsat D+ paging system received yesterday night on L-Band. This is a signal downlink from satellite.

The symbol rate is 4 symbols/sec and 5 bits / symbol ( 20 bps ).

Modulation is a 32-MFSK

"The main use of this technology nowadays is in tracking trucks and buoys and SCADA applications".

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