Question

How do artificial satellites help with long distance communication?

Answer 1

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

Information can include:
1. Scientific data.
2. The condition (state) of the satellite.
3. Location of the satellite.

Answer 2

An artificial satellite relays and amplifies radio telecommunications signals through a transponder. A communication channel is created by it between a source transmitter and a receiver at different places on the Earth.

Communications satellites are artificial satellites which are used for television, radio, internet, telephone and military applications. More than 2,000 communications satellites are in the Earth's orbit used by private and government organizations.

Electromagnetic waves are used in wireless communication to carry signals. These satellites use a wide range of radio and microwave frequencies. In order to avoid signal interference there are regulations for frequency ranges or 'bands' used by different organizations.