The Croydon Transmitter is a television transmission facility in Upper Norwood, London, England (grid reference TQ332696), in the London Borough of Croydon, owned by Arqiva. It was founded in 1955 and initially used a small lattice tower. The tower present on the site today is 152 metres (501 feet) high and was built in 1962. Crystal Palace or Upper Norwood is an area in south London, England within the postcode London SE19. ... London (pronounced ) is the capital city of England and of the United Kingdom. ... Motto: (French for God and my right) Anthem: Multiple unofficial anthems Capital London Largest city London Official language(s) English Government Constitutional monarchy  - Queen Queen Elizabeth II  - Prime Minister Tony Blair MP Unification    - by Athelstan AD927  Area    - Total 130,395 km² (1st in UK)   50,346 sq mi   - Water (%) Population... The British national grid reference system is a system of geographic grid references commonly used in Great Britain, different from using latitude or longitude. ... The London Borough of Croydon is a London borough in South London and part of Outer London. ... Arqiva is the new name for NTLs broadcast division, after it was sold to a consortium led by Macquarie Communications Infrastructure Group. ...

The Croydon Transmitter was originally used to broadcast the London ITV signal on VHF Band III. When UHF broadcasting began the nearby Crystal Palace Transmitter was used. VHF television was discontinued in 1985, and the Croydon Transmitter was not used again for regular TV broadcasting until 1997, when a new directional UHF antenna, designed to avoid interference with continental transmitters, was installed to carry the newly-launched Channel 5 (later five) in the London area. It still carries five's analogue signal, although its digital terrestrial service uses Crystal Palace. Croydon also has reserve transmitters for ITV1 and Channel 4, but these are only used in the event of engineering works or a failure at Crystal Palace. ITV (Independent Television) is the name given to the original network of British commercial television broadcasters, set up under the Independent Television Authority (ITA) to provide competition to the BBC. In England, Wales and southern Scotland, the channel has been rebranded to ITV1 by ITV plc, the owners of the... Very high frequency (VHF) is the radio frequency range from 30 MHz to 300 MHz. ... This article is about the radio frequency. ... The Crystal Palace Transmitter is a telecommunications tower in the Crystal Palace area in the London Borough of Bromley (Grid reference TQ339712). ... 1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar. ... 1997 (MCMXCVII) was a common year starting on Wednesday of the Gregorian calendar. ... Log-periodic dipole array A directional antenna is an antenna which transmits or receives maximum power in a particular direction. ... World map showing Europe Political map Europe is one of the seven traditional continents of Earth; the term continent here referring to a cultural and political distinction, rather than a physiographic one, thus leading to various perspectives about Europes precise borders. ... Five, formerly known as Channel 5, is the United Kingdoms fifth national analogue terrestrial TV channel. ...

Channels listed by Frequency

• Analogue Radio (FM VHF)
  • 95.8 MHz - Capital
  • 97.3 MHz - LBC
  • 100.0 MHz - Kiss 100
  • 102.2 MHz - Smooth FM
  • 105.4 MHz - Magic
  • 106.2 MHz - Heart

• Digital Radio (DAB)
  • Block 12C: 227.360 MHz - CE London

• Analogue Television (PAL-I)
  • UHF 23 (487.25 MHz) - ITV1 (alternative to Crystal Palace)
  • UHF 30 (543.25 MHz) - Channel 4 (alternative to Crystal Palace)
  • UHF 37 (599.25 MHz) - Five

When used in supervisory signaling in telephony, the term frequency-change signaling has been used to describe frequency modulation. ... Very high frequency (VHF) is the radio frequency range from 30 MHz to 300 MHz. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... The Capital Radio building in Leicester Square, London. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... LBC Radio (originally the London Broadcasting Company) operates two London-based radio stations, with news and talk formats. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... Kiss 100 is a radio station broadcasting to London on 100. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... 102. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... Magic 105. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... Heart 106. ... Digital Audio Broadcasting or DAB is a technology for broadcasting audio programming in digital form that was designed in the late 1980s. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... CE London is a Digital Audio Broadcasting multiplex available in the London area and has been broadcasting since May 2000. ... PAL, short for phase-alternating line, phase alternation by line or phase alternation line, is a colour encoding system used in broadcast television systems in large parts of the world. ... This article is about the radio frequency. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... ITV1 is a terrestrial, free-to-air television channel broadcast in the United Kingdom by the ITV network. ... This article is about the radio frequency. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... Channel 4 is a public service television broadcaster in the United Kingdom (see British television). ... This article is about the radio frequency. ... A megahertz (MHz) is one million (106) hertz, a measure of frequency. ... Five, formerly known as Channel 5, is the United Kingdoms fifth national analogue terrestrial TV channel. ...

See also

• Wrotham Transmitter, Brookmans Park Transmitter and Droitwich AM transmitter for the main radio transmitters serving London on VHF, mediumwave and longwave respectively.
• List of towers
• List of tallest buildings and structures in Great Britain

The Wrotham Transmitter is located on the North Downs, close to the village of Wrotham in Kent, England and just north of the M20 motorway (National Grid Reference: TQ595604 ). The mast was built around 1951 and is 550ft (177 metres) tall. ... The Brookmans Park transmitter is a facility for medium wave broadcasting north of London (national grid reference: TL259050). ... The Droitwich AM transmitter is a large broadcasting facility for longwave and mediumwave established in 1934 close to the village of Wychbold, near Droitwich, Worcestershire, England (grid reference SO929663). ... Mediumwave radio transmissions serves as the most common band for broadcasting. ... Longwave radio frequencies are those below 500 kHz, which correspond to wavelengths longer than 600 meters. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... A list of the tallest structures in Great Britain. ...

External links

• The Transmission Gallery: Croydon Transmitter photographs and information