communications satellite wikipedia - EAS
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List of communications satellite firsts - Wikipedia
Iridium Communications - Wikipedia
Optus (satellite) - Wikipedia
History of mobile phones - Wikipedia
Geostationary Operational Environmental Satellite - Wikipedia
List of NRO launches - Wikipedia
Duplex (telecommunications) - Wikipedia
Telstar - Wikipedia
Line-of-sight propagation - Wikipedia
SAT-3/WASC - Wikipedia
Satellite bus - Wikipedia
Inmarsat - Wikipedia
Multimedia - Wikipedia
MEASAT Satellite Systems - Wikipedia