A satellite truck is a mobile communications satellite earth station, typically mounted on a truck chassis as a platform. They are used for remote television broadcasts, to transmit the video signal back to the studio or production facility for editing and broadcast. Satellite trucks usually travel with a production truck, which contains the video cameras, sound equipment and crew. A satellite truck has a large satellite dish antenna which is pointed at a communications satellite, which relays the signal back down to the studio. Satellite communication allows transmission from any location that the production truck can reach, provided a line of sight (direct view) to the desired satellite is available.
Typically a satellite truck will have its own on-board power source such as an electrical generator or inverter to create the alternating current to power all the transmission systems, which makes it a true independent mobile satellite transmission entity. Often such trucks also have various degrees of video production equipment and video editing gear. This equipment allows these trucks to also act as mobile electronic news gathering (ENG) facilities, or they can even be outfitted to do an electronic field production (EFP) to create an entire television show with multiple switched professional video cameras, character generators (CG) for digital on-screen graphics, video tape recorders (VTR) and video servers.