What type of communication is a satellite used for?

Satellites communicate by using radio waves to send signals to the antennas on the Earth . The antennas then capture those signals and process the information coming from those signals.

Telephone, radio, television, internet, and military applications use satellite communications.

Satellites provide in-flight phone communications on airplanes, and are often the main conduit of voice communication for rural areas and areas where phone lines are damaged after a disaster. Satellites also provide the primary timing source for cell phones and pagers.