Satellite-Related Terms

Earth Stations – antenna systems on or near earth

Uplink – transmission from an earth station to a satellite

Downlink – transmission from a satellite to an earth station

Transponder – electronics in the satellite that convert uplink signals to downlink signals

Wireless Comes of Age

Guglielmo Marconi invented the wireless telegraph in 1896

Communication by encoding alphanumeric characters in analog signal

Sent telegraphic signals across the Atlantic Ocean

Communications satellites launched in 1960s

Advances in wireless technology

Radio, television, mobile telephone,communication satellites

More recently

Satellite communications, wireless networking,cellular technology