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In broadcasting, rotation is the repeated airing of a limited playlist of songs on a radio station or satellite radio channel, or music videos on a TV network. [1] They are usually in a different order each time.
Despite ABC broadcasting Monday Night Football in 1970, it joined the Super Bowl rotation only from Super Bowl XIX, in January 1985. ABC, CBS, and NBC then continued to rotate the Super Bowl until 1994, when Fox replaced CBS as the NFC broadcaster. CBS then assumed NBC's place in the rotation after CBS replaced NBC as the AFC broadcaster in 1998.
They are essential tools for broadcasting by music radio stations. These systems are databases of the songs in active rotation at a radio station, plus an ample set of rules for sequencing them in accordance with specific policies. For example, there may be restrictions on how much time must pass between two songs by the same artist, or whether ...
Also AM radio or AM. Used interchangeably with kilohertz (kHz) and medium wave. A modulation technique used in electronic communication where the amplitude (signal strength) of the wave is varied in proportion to that of the message signal. Developed in the early 1900s, this technique is most commonly used for transmitting an audio signal via a radio wave measured in kilohertz (kHz). See AM ...
Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience. In terrestrial radio broadcasting the radio waves are broadcast by a land-based radio station , while in satellite radio the radio waves are broadcast by a satellite in Earth orbit.
Technologies are available that allow for switching to a different signal carrying the same radio program when leaving the broadcast range of a station. Radio Data System allows for switching to a different FM or station with the same identifier, or even to (but not necessarily from) an AM station. Satellite radio also is designed to switch ...
In the United States, FM broadcasting stations currently are assigned to 101 channels, designated 87.9 to 107.9 MHz, within a 20.2 MHz-wide frequency band, spanning 87.8–108.0 MHz. In the 1930s investigations were begun into establishing radio stations transmitting on "Very High Frequency" (VHF) assignments above 30 MHz.
In the Americas (defined as International Telecommunication Union (ITU) region 2), the FM broadcast band consists of 101 channels, each 200 kHz wide, in the frequency range from 87.8 to 108.0 MHz, with "center frequencies" running from 87.9 MHz to 107.9 MHz. For most purposes an FM station is associated with its center frequency.