Broadcast

The sequencing of content in a broadcast is called a schedule. With all technological endeavours a number of technical terms and slang are developed please see the list of broadcasting terms for a glossary of terms used.

Television and radio programs are distributed through radio broadcasting over frequency bands that are highly regulated by the Federal Communications Commission. Such regulation includes determination of the width of the bands, range, licencing, types of receivers and transmitters used, and acceptable content.

Cable programs are often broadcast simultaneously with radio and television programs, but have a more limited audience. By coding signals and having decoding equipment in homes, cable also enables subscription-based channels and pay-per-view services.

A broadcasting organisation may broadcast several programs at the same time, through several channels (frequencies), for example BBC One and Two. On the other hand, two or more organisations may share a channel and each use it during a fixed part of the day. Digital radioand digital television may also transmit multiplexed programming, with several channels compressed into one ensemble.

When broadcasting is done via the Internet the term webcasting is often used. In 2004 a new phenomenon occurred when a number of technologies combined to produce podcasting. Podcasting is an asynchronous broadcast/narrowcast medium, with one of the main proponents being Adam Curry and his associates the Podshow.