Satellite Broadcasting - The distribution of video content over a satellite network. The audio and video signals are acquired at the origination point and probably transmitted through an uplink truck to a geo-synchronous satellite. The orbiting satellite re-transmits the signal to a predetermined geographical area over an "open" or secure channel. Small, inexpensive "downlinks" receive the signal and display the content on television monitors.
http://www.itvdictionary.com/dbs.html Also see TKO Broadcasting via Satellite.