A BT site engineering code is a group of letters assigned by BT, or its predecessor the General Post Office, to a physical location which is equipped by the company with unusual amounts or types of telecommunications.
Such codes relate to both BT's own buildings and major customer sites.
Historically, site codes beginning with the letter Q were government or defence sites. [1] Codes beginning with the letter Y were radio-related sites. The latter category broadened somewhat over time to include many other kinds of customer site.
The Isle of Man has an extensive communications infrastructure consisting of telephone cables, submarine cables, and an array of television and mobile phone transmitters and towers.
Telecommunications towers in the United Kingdom are operated mainly by Arqiva. Arqiva operates the transmitters for UK terrestrial TV and most radio broadcasting, both analogue and digital. BT also operates a number of telecommunications towers in the UK.
ROTOR was an elaborate air defence radar system built by the British Government in the early 1950s to counter possible attack by Soviet bombers. To get it operational as quickly as possible, it was initially made up primarily of WWII-era systems, notably the original Chain Home radars for the early warning role, and the AMES Type 7 for plotting and interception control. Data from these stations was sent to a network of control stations, mostly built underground, using an extensive telephone and telex network.
Royal Air Force Boulmer or more simply RAF Boulmer is a Royal Air Force station near Alnwick in Northumberland, England, and is home to Aerospace Surveillance and Control System (ASACS) Force Command, Control and Reporting Centre (CRC) Boulmer.
Remote Radar Head Neatishead, and commonly abbreviated RRH Neatishead, is an air defence radar site operated by the Royal Air Force (RAF). It is located approximately 11 kilometres north-east of Norwich in the county of Norfolk, England.
Arqiva is a British telecommunications company which provides infrastructure, broadcast transmission and smart meter facilities in the United Kingdom. The company is headquartered at the former Independent Broadcasting Authority headquarters at Crawley Court in the village of Crawley, Hampshire, just outside Winchester. Its main customers are broadcasters and utility companies, and its main asset is a network of circa. 1,500 radio and television transmission sites. It is owned by a consortium of investors led by Digital 9 Infrastructure and the Australian investment house Macquarie Bank. Arqiva is a patron of the Radio Academy.
Linesman/Mediator was a dual-purpose civil and military radar network in the United Kingdom between the 1960s and 1984. The military side (Linesman) was replaced by the Improved United Kingdom Air Defence Ground Environment (IUKADGE), while the civilian side (Mediator) became the modern public-private National Air Traffic Services (NATS).
The Hack Green Secret Nuclear Bunker is a former government-owned nuclear bunker located at Hack Green, Cheshire, England.
Kelvedon Hatch is a village and civil parish in the Borough of Brentwood in south Essex, England. It is situated just north of Pilgrims Hatch, approximately 4 miles (6.4 km) to the north of Brentwood and is surrounded by Metropolitan Green Belt. In 2019 the built up area had an estimated population of 2,434. The parish had a population of 2,563 in 2001, reducing to 2,541 at the 2011 Census and climbed back up to 2,631 in 2021.
Adastral Park is a science campus based on part of the old Royal Air Force Station at Martlesham Heath, near Ipswich in the English county of Suffolk.
Regional seats of government or RSGs were the best known aspect of Britain's civil defence preparations against nuclear war. In fact, however, naming conventions changed over the years as strategies in Whitehall changed.
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.
The Kelvedon Hatch Secret Nuclear Bunker at Kelvedon Hatch, in the Borough of Brentwood in the English county of Essex, is a large underground bunker maintained during the Cold War as a potential regional government headquarters. Since being decommissioned in 1992, the bunker has been open to the public as a tourist attraction, with a museum focusing on its Cold War history.
Barnton Quarry is a disused stone quarry in Corstorphine Hill, Clermiston, Edinburgh, Scotland. The site was later used as a military command centre, and is now being converted into a museum.
Royal Air Force Elsham Wolds or more simply RAF Elsham Wolds is a former Royal Air Force station in England, which operated in the First World War and the Second World War. It is located just to the north east of the village of Elsham in north Lincolnshire.
Skendleby is a small village and civil parish in the East Lindsey district of Lincolnshire, England. It is situated near to the A158 and lies 35 miles (56 km) east from the county town Lincoln, and about 4 miles (6 km) north-east from the town of Spilsby. The village stands near the south-eastern edge of the Lincolnshire Wolds.
Remote Radar Head Trimingham or RRH Trimingham is a former TPS-77 radar station situated on the coast in the English county of Norfolk. The site is located on the coast road between Cromer and Mundesley, 1 kilometre east of the village of Trimingham but the activity has now moved to RRH Neatishead due to the threat from coastal erosion. The radar station was a satellite station of RAF Neatishead. This radar station was controlled and maintained by a section of Radar Technicians and Operators and supported by a team of Ground Engineers. Trimingham provided extensive coverage of the East coast of the United Kingdom and helped contribute to the recognised air picture and defence of the United Kingdom. The type 93 became operational on the site in April 1997.
BT Research is the research arm of BT Group, formerly part of the British Post Office. The company was first established in 1921 as the Post Office Research Station at Dollis Hill, London. In 1968 BT moved of its research to the new site at Martlesham Heath based on part of the old Royal Air Force Station at Martlesham Heath near Ipswich in the English county of Suffolk, which was later renamed[ Adastral Park].