The Galaxy 376 satellites were built in the 1980s and 1990s by Hughes Space and Communications Company, known today as Satellite Development Center, incorporating new technologies as they became available. The spacecraft are used for general communications services, such as television relay, voice and data. Galaxy I-R, V and IX are dedicated to cable television transmission across the United States. The fleet's ground control station is in Long Beach, California, with telemetry and command terminals in Brooklyn, NY, and Fillmore, CA.