The Australian Broadcasting Corporation (ABC) is Australia's national broadcaster founded in 1929. It is currently principally funded by direct grants from the Australian government, but is expressly independent of government and partisan politics. The ABC plays a leading role in journalistic independence and is fundamental in the history of broadcasting in Australia.
BBC Radio 1 is one of the BBC's two flagship radio stations, specialising in modern popular music and current chart hits throughout the day. Radio 1 provides alternative genres after 7 pm, including electronica, dance, hip hop, rock and indie. The choice of music and presenting style is entirely that of programme hosts, however those who present in the daytime have to rotate a number of songs a specific number of times per week. It was launched in 1967 to meet the demand for music generated by pirate radio stations, when the average age of the UK population was 27. The BBC claim that they target the 15–29 age group, and the average age of its UK audience since 2009 is 30. BBC Radio 1 started 24-hour broadcasting on 1 May 1991.
Morse code is a character encoding scheme used in telecommunication that encodes text characters as standardized sequences of two different signal durations called dots and dashes or dits and dahs. Morse code is named for Samuel F. B. Morse, an inventor of the telegraph.
The Hitchhiker's Guide to the Galaxy is a comedy science fiction series created by Douglas Adams. Originally a radio comedy broadcast on BBC Radio 4 in 1978, it was later adapted to other formats, including stage shows, novels, comic books, a 1981 TV series, a 1984 video game, and 2005 feature film.
The BBC World Service, the world's largest international broadcaster, broadcasts radio and television news, speech and discussions in more than 40 languages to many parts of the world on analogue and digital shortwave platforms, Internet streaming, podcasting, satellite, DAB, FM and MW relays. In November 2016 the BBC announced again that it would start broadcasting in additional languages including Amharic and Igbo, in its biggest expansion since the 1940s. In 2015 World Service reached an average of 210 million people a week. The English-language service broadcasts 24 hours a day.
The Canadian Broadcasting Corporation, branded as CBC/Radio-Canada, is a Canadian federal Crown corporation that serves as the national public broadcaster for both radio and television. The English- and French-language service units of the corporation are commonly known as CBC and Radio-Canada.
BBC Radio 4 is a radio station owned and operated by the British Broadcasting Corporation (BBC) that broadcasts a wide variety of spoken-word programmes including news, drama, comedy, science and history. It replaced the BBC Home Service in 1967. The station controller is Gwyneth Williams, and the station is part of BBC Radio and the BBC Radio department. The station is broadcast from the BBC's headquarters at Broadcasting House, London. On 21 January 2019 Williams announced she was quitting the role. There are no details of when or who will be her replacement.
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz). At 300 GHz, the corresponding wavelength is 1 mm, and at 30 Hz is 10,000 km. Like all other electromagnetic waves, radio waves travel at the speed of light. They are generated by electric charges undergoing acceleration, such as time varying electric currents. Naturally occurring radio waves are emitted by lightning and astronomical objects.
AM broadcasting is a radio broadcasting technology, which employs 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.
Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum, in a one-to-many model. Broadcasting began with AM radio, which came into popular use around 1920 with the spread of vacuum tube radio transmitters and receivers. Before this, all forms of electronic communication were one-to-one, with the message intended for a single recipient. The term broadcasting evolved from its use as the agricultural method of sowing seeds in a field by casting them broadly about. It was later adopted for describing the widespread distribution of information by printed materials or by telegraph. Examples applying it to "one-to-many" radio transmissions of an individual station to multiple listeners appeared as early as 1898.
Radio broadcasting is transmission by radio waves intended to reach a wide audience. Stations can be linked in radio networks to broadcast a common radio format, either in broadcast syndication or simulcast or both.
The signal types can be either analog audio or digital audio.
NRK is the Norwegian government-owned radio and television public broadcasting company, and the largest media organisation in Norway. NRK broadcasts three national TV channels and three national radio channels on digital terrestrial television, digital terrestrial radio and subscription television. All NRK radio stations are being streamed online at NRK.no, which also offers an extensive TV service. NRK is a founding member of the European Broadcasting Union.
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The Billboard Hot 100 is the music industry standard record chart in the United States for songs, published weekly by Billboard magazine. Chart rankings are based on sales, radio play, and online streaming in the United States.
FM broadcasting is a method of radio broadcasting using frequency modulation (FM) technology. 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 better sound quality than AM broadcasting, the chief competing radio broadcasting technology, so it is used for most music broadcasts. Theoretically wideband AM can offer equally good sound quality, provided the reception conditions are ideal. FM radio stations use the VHF frequencies. The term "FM band" describes the frequency band in a given country which is dedicated to FM broadcasting.
Radio is the technology of signalling or communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by a radio receiver connected to another antenna. Radio is very widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking and satellite communication among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal in the transmitter. In radar, used to locate and track objects like aircraft, ships, spacecraft and missiles, a beam of radio waves emitted by a radar transmitter reflects off the target object, and the reflected waves reveal the object's location. In radio navigation systems such as GPS and VOR, a mobile receiver receives radio signals from navigational radio beacons whose position is known, and by precisely measuring the arrival time of the radio waves the receiver can calculate its position on Earth. In wireless remote control devices like drones, garage door openers, and keyless entry systems, radio signals transmitted from a controller device control the actions of a remote device.
The British Broadcasting Corporation (BBC) is a British public service broadcaster. Its headquarters are at Broadcasting House in Westminster, London, and it is the world's oldest national broadcasting organisation and the largest broadcaster in the world by number of employees. It employs over 20,950 staff in total, 16,672 of whom are in public sector broadcasting. The total number of staff is 35,402 when part-time, flexible, and fixed-contract staff are included.
Amateur radio, also known as ham radio, describes the use of radio frequency spectrum for purposes of non-commercial exchange of messages, wireless experimentation, self-training, private recreation, radiosport, contesting, and emergency communication. The term "amateur" is used to specify "a duly authorised person interested in radioelectric practice with a purely personal aim and without pecuniary interest;" and to differentiate it from commercial broadcasting, public safety, or professional two-way radio services.
iHeartRadio is a free broadcast and internet radio platform owned by iHeartMedia, Inc. It was founded in April 2008 as the website iheartmusic.com. As of 2017, iHeartRadio functions as a music recommender system and is the national umbrella brand for iHeartMedia's radio network aggregating its over 850 local iHeartMedia radio stations across the United States, as well as hundreds of other stations from various other media. In addition, the service includes thousands of podcasts and now also offers on demand functionality and is the only service that allows listeners to save and replay songs right from live broadcast radio to their digital playlists. The on demand features require a subscription fee. iHeartRadio is available across more than 90 device platforms including online, via mobile devices, and on some video-game consoles.
National Public Radio is an American privately and publicly funded non-profit membership media organization based in Washington, D.C. NPR differs from other non-profit membership media organizations, such as AP, in that it was established by an act of Congress and most of its member stations are owned by government entities. It serves as a national syndicator to a network of over 1,000 public radio stations in the United States.
