Coba jelasin Tempo ogé dari Satelit Komunikasi dalam bahasa sunda dong

list of communications satellite firsts

Military Strategic and Tactical Relay satellite (MILSTAR)

The future of communication satellite business

Communications satellites short history  by David J. Whalen

Beyond The Ionosphere: Fifty Years of Satellite Communication (NASA SP-4217, 1997) – an entire book online—scroll down for “contents” link.