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A radio clock or radio-controlled clock (RCC), and often colloquially referred to as an "atomic clock", is a type of quartz clock or watch that is automatically synchronized to a time code transmitted by a radio transmitter connected to a time standard such as an atomic clock. Such a clock may be synchronized to the time sent by a single transmitter, such as many national or regional time transmitters, or may use the multiple transmitters used by satellite navigation systems such as Global Positioning System. Such systems may be used to automatically set clocks or for any purpose where accurate time is needed. Radio clocks may include any feature available for a clock, such as alarm function, display of ambient temperature and humidity, broadcast radio reception, etc.
Terrestrial television or over-the-air television (OTA) is a type of television broadcasting in which the signal transmission occurs via radio waves from the terrestrial (Earth-based) transmitter of a TV station to a TV receiver having an antenna. The term terrestrial is more common in Europe and Latin America, while in Canada and the United States it is called over-the-air or simply broadcast. This type of TV broadcast is distinguished from newer technologies, such as satellite television, in which the signal is transmitted to the receiver from an overhead satellite; cable television, in which the signal is carried to the receiver through a cable; and Internet Protocol television, in which the signal is received over an Internet stream or on a network utilizing the Internet Protocol. Terrestrial television stations broadcast on television channels with frequencies between about 52 and 600 MHz in the VHF and UHF bands. Since radio waves in these bands travel by line of sight, reception is generally limited by the visual horizon to distances of 64–97 kilometres (40–60 mi), although under better conditions and with tropospheric ducting, signals can sometimes be received hundreds of kilometers distant.
Ríkisútvarpið (RÚV) is Iceland's national public-service broadcasting organization.
BBC Radio Cambridgeshire is the BBC's local radio station serving the county of Cambridgeshire.
BBC Radio Derby is the BBC's local radio station serving the county of Derbyshire.
A tuner is a subsystem that receives radio frequency (RF) transmissions, such as FM broadcasting, and converts the selected carrier frequency and its associated bandwidth into a fixed frequency that is suitable for further processing, usually because a lower frequency is used on the output. Broadcast FM/AM transmissions usually feed this intermediate frequency (IF) directly into a demodulator that converts the radio signal into audio-frequency signals that can be fed into an amplifier to drive a loudspeaker.
Sender Zehlendorf or Zehlendorf (radio) transmission facility was a radio transmission facility which was in service since 1936, when a short wave transmitter was built on the occasion of the Berlin 1936 Summer Olympics in Zehlendorf as part of the establishment of permanent radio services. This Zehlendorf site, which until the end of World War II was referred to as the Rehmate Radio Transmission Centre, had 26 different antennas at the time.
The Langenberg transmission tower is a broadcasting station for ananlog FM Radio and Digital-TV signals. It is located in Langenberg, Velbert, Germany and owned and operated by Westdeutscher Rundfunk, WDR.
There are three Redruth transmitting stations:
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.
Deutschlandfunk is a public-broadcasting radio station in Germany, concentrating on news and current affairs. It is one of the four national radio channels produced by Deutschlandradio.
A broadcast transmitter is an electronic device which radiates radio waves modulated with information content intended to be received by the general public. Examples are a radio broadcasting transmitter which transmits audio (sound) to broadcast radio receivers (radios) owned by the public, or a television transmitter, which transmits moving images (video) to television receivers (televisions). The term often includes the antenna which radiates the radio waves, and the building and facilities associated with the transmitter. A broadcasting station consists of a broadcast transmitter along with the production studio which originates the broadcasts. Broadcast transmitters must be licensed by governments, and are restricted to specific frequencies and power levels. Each transmitter is assigned a unique identifier consisting of a string of letters and numbers called a callsign, which must be used in all broadcasts.
Television in Germany began in Berlin on 22 March 1935, broadcasting for 90 minutes three times a week. It was home to the first public television station in the world, named Fernsehsender Paul Nipkow.
Radio Bremen, shortened to RB is Germany's smallest public radio and television broadcaster and the legally mandated broadcaster for the city-state Free Hanseatic City of Bremen. With its headquarters sited in Bremen, Radio Bremen is a member of the consortium of German public broadcasting organizations, ARD.
Astra Digital Radio (ADR) was a system used by SES for digital radio transmissions on the early Astra satellites, using the audio subcarrier frequencies of analogue television channels. It was introduced in 1995. As of February 2008, there were still 51 stations transmitting in this format. ADR ceased on 30 April 2012 when analogue broadcasts on Astra 19.2°E ended.
The Bungsberg telecommunications tower, also known as the Fernmeldeturm Schönwalde, is a 179-metre-high telecommunications tower situated on the Bungsberg, a hill which is the highest point in the north German state of Schleswig-Holstein.
Norkring AS is a provider of digital terrestrial television and radio transmitting in Norway and Belgium. In Norway, Norkring operates a Digital Video Broadcasting – Terrestrial (DVB-T) network for Norges Televisjon, as well as an FM and Digital Audio Broadcasting (DAB) radio. In Belgium, Norkring operates a DVB-T, DVB-T2, FM, DAB and DAB+ network. It operated a DVB-T network in Slovenia between 2010 and 2012. Norkring is owned by Telenor; Norkring België is owned 75 percent by Norkring and 25 percent by Participatiemaatschappij Vlaanderen.
The Hörby transmitter is a transmission mast located in Östra Sallerup, near Hörby in the southmost part of Sweden operated by national broadcaster Sveriges Radio. Due to its location in the middle of the province, it provides FM radio and television to most of Scania. It is 320 metres high and when opened in October 1959 it was one of the tallest structures in Europe.
Television is the most popular medium in Russia, with 74% of the population watching national television channels routinely and 59% routinely watching regional channels. There are 6,700 television channels in total. Before going digital television, 3 channels have a nationwide outreach : Channel One, Russia-1 and NTV.
Heligoland radio tower is a 113-metre (371 ft) high transmission tower on the island of Heligoland in Germany. It is owned by the Deutsche Telekom. It was constructed in 2000, replacing an older, lower mast that was subsequently demolished, and has some unusual characteristics. It uses a triangular base and, despite being a free-standing tower, is supported by guy wires as well. A few months after its 2000 installation, local authorities sought the sale of municipal land on the Düne area of Heligoland island for private building and operational purposes.
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52°32′06″N7°21′11″E / 52.53500°N 7.35306°E
- ↑ "Die Mittelwelle geht - NDR Info Spezial bleibt | NDR.de - Der NDR - Technik". 2015-01-09. Archived from the original on 2015-01-09. Retrieved 2023-11-12.
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