The BBC World Service is an international broadcaster owned and operated by the BBC, with funding from the British Government through the Foreign Secretary's office. It is the world's largest external broadcaster in terms of reception area, language selection and audience reach. It broadcasts radio 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 2015, the World Service reached an average of 210 million people a week. In November 2016, the BBC announced that it would start broadcasting in additional languages including Amharic and Igbo, in its biggest expansion since the 1940s.
In telecommunications, a repeater is an electronic device that receives a signal and retransmits it. Repeaters are used to extend transmissions so that the signal can cover longer distances or be received on the other side of an obstruction. Some types of repeaters broadcast an identical signal, but alter its method of transmission, for example, on another frequency or baud rate.
There are two types of radio network currently in use around the world: the one-to-many broadcast network commonly used for public information and mass-media entertainment, and the two-way radio type used more commonly for public safety and public services such as police, fire, taxicabs, and delivery services. Cell phones are able to send and receive simultaneously by using two different frequencies at the same time. Many of the same components and much of the same basic technology applies to all three.
The American Radio Relay League (ARRL) is the largest membership association of amateur radio enthusiasts in the United States. ARRL is a non-profit organization, and was co-founded on April 6, 1914, by Hiram Percy Maxim and Clarence D. Tuska of Hartford, Connecticut. The ARRL represents the interests of amateur radio operators before federal regulatory bodies, provides technical advice and assistance to amateur radio enthusiasts, supports a number of educational programs and sponsors emergency communications service throughout the country. The ARRL has approximately 161,000 members. In addition to members in the US, the organization claims over 7,000 members in other countries. The ARRL publishes many books and a monthly membership journal called QST.
BBC Three Counties Radio is the BBC's local radio station serving the counties of Bedfordshire, Hertfordshire and Buckinghamshire.
The annual Simulated Emergency Test (SET) is a training exercise involving the Amateur Radio Emergency Service (ARES) and the National Traffic System (NTS), a message-handling service of amateur radio. The American Radio Relay League is a prime mover in this event, which is organized somewhat like a contest. Its primary purposes are to evaluate strengths and weaknesses in emergency preparedness and communications, and to demonstrate amateur radio to the public.
WFLY is a Top 40/CHR radio station licensed to Troy, New York, and serving the Capital District. The station is owned by Pamal Broadcasting and is considered the company's flagship station. The radio studios and offices are at 6 Johnson Road in Latham.
Radio broadcasting in Sri Lanka dates to 1923. Radio broadcasting, like other forms of media in Sri Lanka, is generally divided along linguistic lines with state and private media operators providing services in Sinhala, Tamil, and English language.
Switch London is a DAB ensemble operated by Switchdigital; it broadcasts from a variety of sites in and around London. It has been on air since July 2000. It is also referred to as the Greater London 2 multiplex. In their application to the Radio Authority, Switch proposed using Brookmans Park as a transmission site in its SFN, but this has not yet been implemented.
DRG London is a Digital Audio Broadcasting multiplex available in the London area that has been broadcasting since January 2002. It is also referred to as the Greater London 3 multiplex. The station operates from ten transmitters: Croydon, Alexandra Palace, Blue Bell Hill, Reigate, Guildford, Brookmans Park, Zouches Farm, BT Bedmont, High Wycombe and Kemsing.
Microwave transmission is the transmission of information by electromagnetic waves with wavelengths in the microwave range of the electromagnetic spectrum. Microwave signals are normally limited to the line of sight, so long-distance transmission using these signals requires a series of repeaters forming a microwave relay network. It is possible to use microwave signals in over-the-horizon communications using tropospheric scatter, but such systems are expensive and generally used only in specialist roles.
The British Telecom microwave network was a network of point-to-point microwave radio links in the United Kingdom, operated at first by the General Post Office, and subsequently by its successor BT plc. From the late 1950s to the 1980s it provided a large part of BT's trunk communications capacity, and carried telephone, television and radar signals and digital data, both civil and military. Its use of line-of-sight microwave transmission was particularly important during the Cold War for its resilience against nuclear attack. It was rendered obsolete, at least for normal civilian purposes, by the installation of a national optical fibre communication network with considerably higher reliability and vastly greater capacity.
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.
Heart Dunstable was an Independent Local Radio station based in Chiltern Road in Dunstable, Bedfordshire.
Arkansas Radio Network (ARN) was a statewide radio network serving radio stations in the state of Arkansas. ARN was headquartered in Little Rock, Arkansas operating from its flagship station KARN-FM and ended its existence under the ownership of Cumulus Media.
Telecommunications in Djibouti falls under the authority of the Ministry of Communication & Culture.
Heart Bedford was an Independent Local Radio station based in the Priory Business Park in Bedford, Bedfordshire.
WIBK is a country music-formatted broadcast radio station licensed to Watseka, Illinois, serving Watseka and Eastern Iroquois County, Illinois and Western Benton and Southern Newton counties in Indiana. WIBK is a daytime only station and is owned and operated by Iroquois County Broadcasting Company, which is owned by Richard and Margaret Martin. The WIBK antenna is a three-tower array.
An amateur radio net, or simply ham net, is an "on-the-air" gathering of amateur radio operators. Most nets convene on a regular schedule and specific frequency, and are organized for a particular purpose, such as relaying messages, discussing a common topic of interest, in severe weather, emergencies, or simply as a regular gathering of friends for conversation.
Absolute Radio 00s is a semi-national digital radio station owned and operated by Bauer as part of the Absolute Radio Network. It broadcasts locally on Bauer's Inverness DAB Multiplex. It broadcasts nationally via smart speaker streaming and online web streaming.
