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Analog radio broadcasts use one of two types of radio wave modulation: amplitude modulation for AM radio, or frequency modulation for FM radio. Newer, digital radio stations transmit in several different digital audio standards, such as DAB (Digital Audio Broadcasting), HD radio, or DRM (Digital Radio Mondiale).
It belongs to FM radio station KWNR, in Henderson, Nevada, and broadcasts at 95.5 MHz. FM broadcasting is a method of radio broadcasting that uses frequency modulation ( FM) of the radio broadcast carrier wave. Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to transmit high-fidelity sound over broadcast radio.
Different types of information signals carried by radio have different data rates. For example, a television (video) signal has a greater data rate than an audio signal. [31] [37] The radio spectrum, the total range of radio frequencies that can be used for communication in a given area, is a limited resource.
Radio broadcastinghas been used in the United States since the early 1920s to distribute news and entertainment to a national audience. In 1923, 1 percent of U.S. households owned at least one radio receiver, while a majority did by 1931 and 75 percent did by 1937. [1][2]It was the first electronic "mass medium" technology, and its introduction ...
The rise of FM radio and television broadcasting in the 1940s–1950s created a need for even taller masts. The earlier AM broadcasting used LF and MF bands, where radio waves propagate as ground waves which follow the contour of the Earth. The ground-hugging waves allowed the signals to travel beyond the horizon, out to hundreds of kilometers.
Radio networks have evolved significantly since their inception, with numerous types and technologies emerging to cater to diverse needs and applications. There are different types of networks: Broadcast Radio Network: Broadcast radio networks are designed to transmit audio content, such as music, news, talk shows, and advertisements. They ...
A radio format aims to reach a more or less specific audience according to a certain type of programming, which can be thematic or general, more informative or more musical, among other possibilities. [nb 1] Radio formats are often used as a marketing tool and are subject to frequent changes, [3] including temporary changes called " stunting ."
AM broadcasting. AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions. It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands.