Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the daytime, reception is usually limited to more local stations, though this is dependent on the signal conditions and quality of radio receiver used. Improved signal propagation at night allows the reception of much longer distance signals. This can cause increased interference because on most channels multiple transmitters operate simultaneously worldwide. In addition, amplitude modulation (AM) is often more prone to interference by various electronic devices, especially power supplies and computers. Strong transmitters cover larger areas than on the FM broadcast band but require more energy and longer antennas. Digital modes are possible but have not reached momentum yet.
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 transmissions, but also on the longwave and shortwave radio bands.
Medium frequency (MF) is the ITU designation for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz). Part of this band is the medium wave (MW) AM broadcast band. The MF band is also known as the hectometer band as the wavelengths range from ten to one hectometer. Frequencies immediately below MF are denoted low frequency (LF), while the first band of higher frequencies is known as high frequency (HF). MF is mostly used for AM radio broadcasting, navigational radio beacons, maritime ship-to-shore communication, and transoceanic air traffic control.
Radio broadcasting is transmission 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 which 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 which also uses radio frequencies to broadcast television (video) signals.
RTÉ Radio 1 is an Irish national radio station owned and operated by RTÉ and is the direct descendant of Dublin radio station 2RN, which began broadcasting on a regular basis on 1 January 1926.
BBC Radio Leeds is the BBC's local radio station serving the county of West Yorkshire.
Radio 538 is a Dutch commercial radio station that was founded in Hilversum, Netherlands in 1992. It is the second-most listened to radio station in the Netherlands. Radio 538 refers to the wavelength on which Radio Veronica used to broadcast in the 1970s. The station is owned by Talpa Network. Mostly targetting a young audience, the station plays a mix of current dance, R&B, pop, and rock hits. The music selection is mainly based on the Dutch Top 40 chart. Its breakfast and drive-time shows are talk-intensive.
BBC Radio Ulster is a Northern Irish radio station owned and operated by BBC Northern Ireland, a division of the BBC. It was established on New Year's Day 1975, replacing what had been an opt-out of BBC Radio 4. It is broadcast on radio across Northern Ireland and parts of the Republic of Ireland, and on digital television services across all of Ireland.
The mediumwave transmitter Flevoland was a broadcasting facility for medium wave near Zeewolde in the province of Flevoland, Netherlands, situated at 5°25′ E and 52°23′ N. It has been used for broadcasting on 747 kHz and 1008 kHz with a nominal power of 400 kilowatts. As aerial two guyed steel framework masts with a height of 195 metres are used, which form an anti-fading aerial. These masts are grounded and carry a cage aerial, which is upperward the separation insulator, separating the masts in a height of 95 metres in two parts, connected toward the mast construction. The radiation diagram is directional, with a maximum gain of 4 dB in South-Eastern direction, to compensate for the variation in electrical admittance of terrain in the Netherlands.
FM broadcasting is a method of radio broadcasting using frequency modulation (FM). Invented in 1933 by American engineer Edwin Armstrong, wide-band FM is used worldwide to provide high fidelity sound over broadcast radio. FM broadcasting is capable of higher fidelity—that is, more accurate reproduction of the original program sound—than other broadcasting technologies, such as AM broadcasting. It is also less susceptible to common forms of interference, reducing static and popping sounds often heard on AM. Therefore, FM is used for most broadcasts of music or general audio. FM radio stations use the very high frequency range of radio frequencies.
The Orfordness transmitting station was a major radio broadcasting facility at Orford Ness on the Suffolk coast in the United Kingdom able to broadcast to much of Europe. It closed in May 2012 after more than 30 years of service. In 2017 Radio Caroline started broadcasting from the site, though not with the same intended coverage of an audience in Europe as the original station.
WISN is a commercial AM radio station in Milwaukee, Wisconsin. It broadcasts a conservative talk radio format and is owned by iHeartMedia, Inc. The studios are on Howard Avenue in the Milwaukee suburb of Greenfield.
Radio Caroline is a British radio station founded in 1964 by Ronan O'Rahilly and Alan Crawford initially to circumvent the record companies' control of popular music broadcasting in the United Kingdom and the BBC's radio broadcasting monopoly. Unlicensed by any government for most of its early life, it was a pirate radio station that never became illegal as such due to operating outside any national jurisdiction, although after the Marine Offences Act (1967) it became illegal for a British subject to associate with it.
KRKS is a commercial AM radio station licensed to Denver, Colorado. The station is owned and operated by Salem Media Group and it airs a Christian talk and teaching radio format. Its studios and offices are located on South Vaughn Way in Aurora, with the AM transmitter located on East 56th Avenue in North Washington. KRKS with co-owned KRKS-FM; together, are known as "The Word," but carry most programs at different times of the day.
BBC Radio 5 was a national radio station that broadcast sports, children's and educational programmes. It ran from 1990 to 1994 and was transmitted via analogue radio on 693 and 909 kHz AM.
Arrow Classic Rock is a Dutch radio station, that plays classic rock and some modern rock. Arrow Classic Rock broadcasts on FM and is also receivable via cable, all nationwide. Owned by Ad Ossendrijver and Willem van Kooten, the station started broadcasts via all Dutch cablenetworks in 1996 and bought AM 828 from Veronica FM in 1998. In 2003 the frequencies of medium wave had been redistributed and the station moved to AM 675. In May 2007 Crosspoints BV, the company which produced Arrow Classic Rock and Arrow Jazz FM bought Caz! to use their FM frequencies. On 31 January 2008 they ceased their AM transmissions, transmitting an announcement in English advising their move to FM and to use the web stream. Three evenings a week, a variety of program specials can be heard. On Monday Liselotte Hegt presents the program Arrow High Voltage!, on Tuesday Arie Verstegen presented Symphonic Mania! and Wednesday to hear the Bluesbox Gerry Jungen.
This is a list of events in British radio during 1990.
Radio 10 is a Dutch commercial radio station that mostly focuses on songs from the 1970s to 2000s, with a moderate amount of mid-1960s' and 2010s' hits. It is one of the oldest, still remaining, commercial radio stations of the Netherlands.
This is a timeline of RTÉ Radio.
