Regional variation

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A regional variation generally refers to times when a radio station or television station simultaneously broadcasts different programs, continuity or advertisements to different parts of its coverage area. This may be so as to provide programming specific to a particular region, such as local news, or may be so as to allow advertisements to be targeted to a particular area.

Some regional variations are the consequence of a federal style television network or radio network where a local station is a part of a larger broadcast network and broadcasts the network's programs some of the time and its own programming the rest of the time. The latter is therefore sometimes considered a regional variation. Examples of this include the UK's ITV network throughout much of its history, and American network affiliate stations.

Regional variation is also a common term used in British television listings publications, such as magazines and newspapers, to show the different programs broadcast in different areas of the country.