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To meet the demands of the market, the technology used for Inmarsat has been evolving ever since it started to provide stable mobile marine communications by replacing communication in the medium and high frequency band with microwave communication using artificial satellites. In response to changing demands, services have been added to the originally provided telephone, fax, and telex which make communication by e-mail and other data transmission means simple.

This report deals with the development and start of manufacture of Inmarsat communication equipment by JRC over the course of more than 30 years. The evolution in each generation of these products, from the Inmarsat A System to the present Inmarsat FleetBroadband system, are introduced.

Shigeru Senoh
Nobuyuki Ito