Most television stations are commercial broadcasting enterprises which are structured in a variety of ways to generate revenue from television commercials. They may be an independent station or part of a broadcasting network, or some other structure. They can produce some or all of their programs or buy some broadcast syndication programming for or all of it from other stations or independent production companies.
Many stations have some sort of television studio, which on major-network stations is often used for newscasts or other local programming. There is usually a news department, where journalists gather information. There is also a section where electronic news-gathering (ENG) operations are based, receiving remote broadcasts via remote pickup unit or satellite TV. Outside broadcasting vans, production trucks, or SUVs with electronic field production (EFP) equipment are sent out with reporters, who may also bring back news stories on video tape rather than sending them back live.
To keep pace with technology United States television stations have been replacing operators with broadcast automation systems to increase profits in recent years.
Stations not affiliated with major television networks generally do not air to the public, or much other television programming. Some stations (known as repeaters or translators) only simulcast another, usually the programmes seen on its owner's flagship station, and have no television studio or production facilities of their own. This is common in developing countries. Low-power stations typically also fall into this category worldwide.
Most stations which are not simulcast produce their own station identifications, using digital alien TV graphics. TV stations may also advertise on or provide weather (or news) services to local radio stations, particularly co-owned sister stations. This may be a barter in some cases.
Read more about this topic: Television Station
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