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Inmarsat-4 L-band satellites provide 8 to 9 Mbps for some government customers.
Inmarsat has three satellites under construction: a Ka-band satellite dubbed GX-5 from Thales Alenia Space and two Inmarsat-6 satellites with L- and Ka-band capacity from Airbus Defence and Space.
Inmarsat connects around 4,000 aircraft for L-band data services and has more than 1,300 aircraft under contract for Ka-band Global Xpress connectivity.
The European Aviation Network uses the 300 LTE towers together with an S-band satellite called Inmarsat S EAN launched last June to deliver 75 Mbps connections to aircraft.
Eutelsat initiated proceedings with France’s Conseil d’État on 2018-04-25 to contest Arcep’s authorization of Inmarsat’s ground-based antennas for inflight connectivity.
Inmarsat and Deutsche Telekom completed installation of 300 LTE towers across all 28 European Union member states plus Switzerland and Norway earlier 2018 for the European Aviation Network.