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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. To receive the content the listener must have a broadcast radio receiver (radio). Stations are often affiliated with a radio network that provides content in a common radio format, either in broadcast syndication or simulcast, or both. Radio stations broadcast with several different types of modulation: AM radio stations transmit in AM, FM radio stations transmit in FM, which are older analog audio standards, while newer digital radio stations transmit in several digital audio standards: DAB, HD radio, DRM. Television broadcasting is a separate service that also uses radio frequencies to broadcast television (video) signals.
Low-power broadcasting is broadcasting by a broadcast station at a low transmitter power output to a smaller service area than "full power" stations within the same region. It is often distinguished from "micropower broadcasting" and broadcast translators. LPAM, LPFM and LPTV are in various levels of use across the world, varying widely based on the laws and their enforcement.
The FM broadcast band is a range of radio frequencies used for FM broadcasting by radio stations. The range of frequencies used differs between different parts of the world. In Europe and Africa and in Australia and New Zealand, it spans from 87.5 to 108 megahertz (MHz) - also known as VHF Band II - while in the Americas it ranges from 88 to 108 MHz. The FM broadcast band in Japan uses 76 to 95 MHz, and in Brazil, 76 to 108 MHz. The International Radio and Television Organisation (OIRT) band in Eastern Europe is from 65.9 to 74.0 MHz, although these countries now primarily use the 87.5 to 108 MHz band, as in the case of Russia. Some other countries have already discontinued the OIRT band and have changed to the 87.5 to 108 MHz band.
Last.fm Limited is a music website founded in the United Kingdom in 2002. Using a music recommender system called "Audioscrobbler", Last.fm builds a detailed profile of each user's musical taste by recording details of the tracks the user listens to, either from Internet radio stations, or the user's computer or many portable music devices. This information is transferred ("scrobbled") to Last.fm's database either via the music player or via a plug-in installed into the user's music player. The data is then displayed on the user's profile page and compiled to create reference pages for individual artists.
Campus radio is a type of radio station that is run by the students of a college, university or other educational institution. Programming may be exclusively created or produced by students, or may include program contributions from the local community in which the radio station is based. Sometimes campus radio stations are operated for the purpose of training professional radio personnel, sometimes with the aim of broadcasting educational programming, while other radio stations exist to provide alternative to commercial broadcasting or government broadcasters.
HD Radio (HDR) is a trademark for an in-band on-channel (IBOC) digital radio broadcast technology. HD radio generally simulcasts an existing analog radio station in digital format with less noise and with additional text information. HD Radio is used primarily by AM and FM radio stations in the United States, U.S. Virgin Islands, Canada, Mexico and the Philippines, with a few implementations outside North America.
Contemporary hit radio is a radio format that is common in many countries that focuses on playing current and recurrent popular music as determined by the Top 40 music charts. There are several subcategories, dominantly focusing on rock, pop, or urban music. Used alone, CHR most often refers to the CHR-pop format. The term contemporary hit radio was coined in the early 1980s by Radio & Records magazine to designate Top 40 stations which continued to play hits from all musical genres as pop music splintered into Adult contemporary, Urban contemporary, Contemporary Christian and other formats.
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. FM broadcasting offers higher fidelity—more accurate reproduction of the original program sound—than other broadcasting techniques, such as AM broadcasting. It is also less susceptible to common forms of interference, having less static and popping sounds than are often heard on AM. Therefore, FM is used for most broadcasts of music and general audio. FM radio stations use the very high frequency range of radio frequencies.
KIIS-FM is a commercial radio station licensed to Los Angeles, California, United States, and broadcasts to the Greater Los Angeles area. The station airs a Top 40 (CHR) format. Owned by iHeartMedia, KIIS-FM is the origin of the conglomerate's KISS-FM brand, and serves as the flagship station for the radio program On Air with Ryan Seacrest. KIIS-FM's studios are located in Burbank, while the station transmitter resides on Mount Wilson, north of Los Angeles.
WZLX is a classic rock radio station in Boston, Massachusetts. This station is owned and operated by iHeartMedia. WZLX was one of America's first classic rock FM stations. Its studios are in Medford, and its transmitter is atop the Prudential Tower.
Radio enjoys a huge following in the United Kingdom. There are around 600 licensed radio stations in the country. For a more comprehensive list see List of radio stations in the United Kingdom.
All-news radio is a radio format devoted entirely to the discussion and broadcast of news.
KHTS-FM is a top 40 (CHR) radio station that is licensed to El Cajon, California and serves the San Diego market. The station is owned by iHeartMedia, Inc., through licensee iHM Licenses, LLC, and brands as "Channel 9-3-3". The station's studios are located in San Diego's Serra Mesa area, while the transmitter is located in Chollas View, which is east of Balboa Park and west of Emerald Hills, sharing facilities with KLSD. The station is available in HD Radio; the HD2 subchannel airs an LGBT-leaning dance hits format, carrying iHeart's Pride Radio network.
WRVE is a commercial radio station licensed in Schenectady and serving the Capital District and Upper Hudson Valley New York. It broadcasts a hot adult contemporary radio format and calls itself "99.5 The River", referring to the Hudson River. The station is owned by iHeartMedia as one of seven radio stations owned by the company in the Albany-Schenectady-Troy radio market.
WACO-FM is a commercial FM radio station in Waco, Texas. It airs a country music radio format and is owned by iHeartMedia, Inc. The studios and offices are located on West Highway 6 in Southwest Waco. The transmitter is off Tower Drive in McLennan County in the community of Moody, amid towers for other local FM and TV stations.
WSIX-FM is a radio station licensed to serve Nashville, Tennessee. Owned by iHeartMedia, the station broadcasts a country music format. WSIX's studios are located in Nashville's Music Row district and the transmitter site is in Forest Hills, Tennessee.
The Voice of Vietnam or VOV is the Vietnamese national radio broadcaster. Directly controlled by the government of Vietnam, it is tasked propagating the policies of the Party and the laws of the state.
WESC-FM is a commercial radio station in Greenville, South Carolina, serving the Upstate region, including Greenville, Spartanburg and Anderson, South Carolina, as well as Asheville, North Carolina. It airs a classic country radio format and is owned by iHeartMedia, Inc. The station goes by the name "92.5 WESC" and its slogan is "Carolina's Best Country And Your All-Time Favorites." iHeart owns three country stations in the market: WSSL-FM 100.5 has a contemporary country format, while WESC 660 AM and WESC-FM 92.5 simulcast classic country hits.
A broadcast relay station, also known as a satellite station, relay transmitter, broadcast translator (U.S.), re-broadcaster (Canada), repeater or complementary station (Mexico), is a broadcast transmitter which repeats the signal of a radio or television station to an area not covered by the originating station. It expands the broadcast range of a television or radio station beyond the primary signal's original coverage or improves service in the original coverage area. The stations may be used to create a single-frequency network. They may also be used by an AM or FM radio station to establish a presence on the other band.
KBFP-FM is a commercial FM radio station licensed to Delano, California, and serving the Bakersfield metropolitan area. The station is owned by iHeartMedia, Inc., and calls itself "Sunny 105.3." It broadcasts an adult contemporary radio format, switching to Christmas music for much of November and December. Most of the programming is syndicated: "Valentine in the Morning" comes from co-owned KBIG Los Angeles, afternoon drive time is from "John Tesh Intelligence for Your Life" and evenings feature the call-in and dedication show "Delilah."