Spanish-language networks – fully programmed networks which air Spanish-language programming to a primarily Latin American audience (for example, Telemundo and Univision).Commercial networks – which air English-language programming to a general audience (for example, ABC, CBS, NBC, and Fox).Through the use of multicasting, there have also been a number of new Spanish-language and non-commercial public TV networks that have launched.įree-to-air networks in the U.S. A number of new commercial networks airing specialty programming such as movies, reruns of classic series and lifestyle programs have been created from companies like Weigel Broadcasting, Sinclair Broadcast Group and even owners of the major networks such as Fox Corporation (through the Fox Entertainment subsidiary), Paramount Global (through the CBS Media Ventures subsidiary), The Walt Disney Company (through the Walt Disney Television subsidiary) and Comcast (through the NBCUniversal subsidiary). The transition to digital broadcasting in 2009 has allowed for television stations to offer additional programming options through digital subchannels, one or more supplementary programming streams to the station's primary channel that are achieved through multiplexing of a station's signal. Most media outlets now include Fox in what they refer to as the "Big Four" TV networks. Fox has just about the same household reach percentage as the Big Three, and is therefore often considered a peer to ABC, CBS, and NBC since it has also achieved equal or better ratings since the late 1990s as of 2019, it also programs the equivalent amount of sports programming as the Big Three. Many other large networks exist, however, notably Fox and The CW which air original programming for two hours each night instead of three like the original "Big Three" do, as well as MyNetworkTV, which feature reruns of recent popular shows with little to no original programming, and Ion Television, which has had the same format since around 2007 but has started to pursue sports properties. Other than the non-commercial educational (NCE) PBS, which is composed of member stations, the largest terrestrial television networks are the traditional Big Three television networks (ABC, CBS and NBC). Today, more than fifty national free-to-air networks exist. From 1954 to 1970, National Educational Television was the national clearinghouse for public TV programming the Public Broadcasting Service ( PBS) succeeded it in 1970. From 1956 to 1986, the " Big Three" national commercial networks were ABC, CBS, and NBC (with a few limited attempts to challenge them, such as National Telefilm Associates and the Overmyer Network). From 1946 to 1956, these were ABC, CBS, NBC and DuMont (though the Paramount Television Network had some limited success during these years). In the United States, for most of the history of broadcasting, there were only three or four major commercial national terrestrial networks. The five major commercial broadcast television networks, along with PBS
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