Aired

Aired is a term commonly used in the context of broadcasting and television to refer to the transmission of a program or segment over the airwaves or through cable and satellite systems. The term can also be applied to radio broadcasts.

Broadcasting

Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum (radio waves). Broadcasting began with AM radio which came into popular use around 1920 with the spread of vacuum tube radio transmitters and receivers.

Television

Television broadcasting involves the transmission of moving images and sound. The first television broadcasts were experimental, sporadic programs viewed only within a very short range from the broadcast tower starting in the 1920s. Commercially, television broadcasting began in the 1930s and has since evolved to include cable television, satellite television, and digital television.

Radio

Radio broadcasting is the transmission of audio (sound), sometimes with related metadata, by radio waves to radio receivers owned by a public audience. Stations can be linked in radio networks to broadcast common radio programs, either in broadcast syndication or simulcast or both.

Related Concepts

• Live broadcast: A broadcast that is transmitted in real-time, as events happen.
• Delayed broadcast: A broadcast that is recorded and transmitted at a later time.
• Simulcast: A simultaneous broadcast of the same program on multiple channels or platforms.
• Syndication: The sale of the right to broadcast television and radio programs by multiple television and radio stations, without going through a broadcast network.

See Also

• Broadcasting
• Television
• Radio
• Live broadcast
• Delayed broadcast
• Simulcast
• Syndication