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The Emley Moor transmitting station
is a
telecommunication
Telecommunication is the transmission of information by various types of technologies over wire, radio, optical, or other electromagnetic systems. It has its origin in the desire of humans for communication over a distance greater than that fe ...
s and
broadcasting
Broadcasting is the distribution (business), distribution of sound, audio or video content to a dispersed audience via any electronic medium (communication), mass communications medium, but typically one using the electromagnetic spectrum (radio ...
facility on Emley Moor,
[ west of the village centre of Emley, in ]Huddersfield
Huddersfield is a market town in the Kirklees district in West Yorkshire, England. It is the administrative centre and largest settlement in the Kirklees district. The town is in the foothills of the Pennines. The River Holme's confluence into ...
, West Yorkshire
West Yorkshire is a metropolitan and ceremonial county in the Yorkshire and Humber Region of England. It is an inland and upland county having eastward-draining valleys while taking in the moors of the Pennines. West Yorkshire came into exi ...
, England.
It is made up of a [ ]concrete
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...
tower and apparatus that began to transmit in 1971. It is protected under UK law as a Grade II listed building
In the United Kingdom, a listed building or listed structure is one that has been placed on one of the four statutory lists maintained by Historic England in England, Historic Environment Scotland in Scotland, in Wales, and the Northern Irel ...
. It is the tallest freestanding structure in the United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...
, and 25th tallest tower in the world.[ It was the seventh tallest freestanding structure and was fourth tallest tower in the European Union before ]Brexit
Brexit (; a portmanteau of "British exit") was the withdrawal of the United Kingdom (UK) from the European Union (EU) at 23:00 GMT on 31 January 2020 (00:00 1 February 2020 CET).The UK also left the European Atomic Energy Community (EAEC or ...
.[ When built it was the sixth tallest freestanding structure in the world after the Ostankino Tower, the ]Empire State Building
The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan, New York City. The building was designed by Shreve, Lamb & Harmon and built from 1930 to 1931. Its name is derived from "Empire State", the nickname of the st ...
, 875 North Michigan Avenue
The John Hancock Center is a 100- story, 1,128-foot supertall skyscraper located in Chicago, Illinois. Located in the Magnificent Mile district, the building was officially renamed 875 North Michigan Avenue in 2018.
The skyscraper was designed ...
(known as The John Hancock Center), the Berliner Fernsehturm
The Berliner Fernsehturm or Fernsehturm Berlin ( en, Berlin Television Tower) is a television tower in central Berlin, Germany.
Located in the Marien quarter (''Marienviertel''), close to Alexanderplatz in the locality and district of Mitte, th ...
and Tokyo Tower
is a communications and observation tower in the Shiba-koen district of Minato, Tokyo, Japan, built in 1958. At , it is the second- tallest structure in Japan. The structure is an Eiffel Tower-inspired lattice tower that is painted white and i ...
.
The tower's current official name, The Arqiva Tower, is shown on a sign beside the offices at the base of the tower, but it is commonly known just as "Emley Moor Mast".[
In 2021, the antenna was removed due to technical errors and it was replaced by a shorter antenna of 11m but the structure still remains the tallest freestanding structure in the United Kingdom.
]
History
The present concrete tower is the third antenna support structure to have occupied the site. The original lattice tower
A lattice tower or truss tower is a freestanding vertical framework tower. This construction is widely used in transmission towers carrying high voltage electric power lines, in radio masts and towers (a self-radiating tower or as a support for a ...
was erected in 1956 to provide Independent Television broadcasts to the Yorkshire area. It entered service on 3 November 1956, transmitting Granada Television
ITV Granada, formerly known as Granada Television, is the ITV franchisee for the North West of England and Isle of Man. From 1956 to 1968 it broadcast to both the north west and Yorkshire but only on weekdays as ABC Weekend Television was it ...
programmes on weekdays, and ABC TV programmes at weekends. In 1964, it was replaced by a taller guyed mast
A guyed mast or guyed tower is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground) for stability. The mast itself has the compressive strength to support its own weight, but does not ha ...
, identical to the structure at Belmont transmitting station
The Belmont transmitting station is a broadcasting and telecommunications facility next to the B1225, one mile west of the village of Donington on Bain in the civil parish of South Willingham, near Market Rasen and Louth in Lincolnshire, England ...
in Lincolnshire, at (see map o
mb21 - The Transmission Gallery
. The dismantled lattice tower was rebuilt at Craigkelly transmitting station
The Craigkelly transmitting station is a broadcasting and telecommunications facility located at Craigkelly () north of the Firth of Forth above the town of Burntisland in Fife, Scotland. It has a 125-metre tall free-standing lattice tower rebuilt ...
. Yorkshire Television
ITV Yorkshire, previously known as Yorkshire Television and commonly referred to as just YTV, is the British television service provided by ITV Broadcasting Limited for the Yorkshire franchise area on the ITV (TV network), ITV network. Until 19 ...
commenced broadcasting from the Emley Moor transmitter following the reorganisation of the ITV franchises on 29 July 1968 .
Collapse of second mast
Emley Moor has been a transmission site since the earliest days of commercial television in the UK. The first permanent transmitter built there was for ITV
ITV or iTV may refer to:
ITV
*Independent Television (ITV), a British television network, consisting of:
** ITV (TV network), a free-to-air national commercial television network covering the United Kingdom, the Isle of Man, and the Channel Islan ...
, covering much of the north of England. It had a lattice tower, which provided limited coverage. Its performance was improved in anticipation of colour PAL
Phase Alternating Line (PAL) is a colour encoding system for analogue television. It was one of three major analogue colour television standards, the others being NTSC and SECAM. In most countries it was broadcast at 625 lines, 50 fields (25 ...
transmissions in 1966, when a guy-supported tubular mast was erected. It was constructed from curved steel segments to form a diameter tube, long, and was surmounted by a lattice section tall, and a capping cylinder, bringing the total height to . At the time of its construction, it was one of the tallest man-made structures in the world. It was designed by British Insulated Callender's Cables
British Insulated Callender's Cables (BICC) was a 20th-century British cable manufacturer and construction company, now renamed after its former subsidiary Balfour Beatty. It was formed from the merger of two long established cable firms, Callen ...
(BICC), and manufactured by EMI
EMI Group Limited (originally an initialism for Electric and Musical Industries, also referred to as EMI Records Ltd. or simply EMI) was a British transnational conglomerate founded in March 1931 in London. At the time of its break-up in 201 ...
, and built by J. L. Eve Construction.
Its ropes weighed , made by British Ropes British Ropes was a company established on 6 June 1924 through the merger of eight companies.
The companies were:
Gateshead
* Haggie Brothers, Gateshead
* Tyne Wire Drawing Co (a subsidiary of the above)
Liverpool:
* R. S. Newall and Son
London: ...
, with steel from Steel, Peech and Tozer of Templeborough
Templeborough (historically Templebrough) is a suburb of Rotherham, South Yorkshire, England. The suburb falls within the Brinsworth and Catcliffe ward of Rotherham Metropolitan Borough Council. The area takes its name from the remains of the ...
in southern Yorkshire. The column weighed and had 375 segments, with steel from United Steel Companies
The United Steel Companies was a steelmaking, engineering, coal mining and coal by-product group based in South Yorkshire and Lincolnshire, England.
History
The company was registered in 1918 and the following year saw a joining together of ste ...
at Scunthorpe
Scunthorpe () is an industrial town and unparished area in the unitary authority of North Lincolnshire in Lincolnshire, England of which it is the main administrative centre. Scunthorpe had an estimated total population of 82,334 in 2016. A pre ...
in northern Lincolnshire
Lincolnshire (abbreviated Lincs.) is a county in the East Midlands of England, with a long coastline on the North Sea to the east. It borders Norfolk to the south-east, Cambridgeshire to the south, Rutland to the south-west, Leicestershire ...
.
The cylindrical steel mast was regularly coated in ice during the winter months, and large icicle
An icicle is a spike of ice formed when water falling from an object freezes.
Formation and dynamics
Icicles can form during bright, sunny, but subfreezing weather, when ice or snow melted by sunlight or some other heat source (such as ...
s formed on the guy wires, placing them under great strain. During winter, ice falling from the guy-wires was common. For this reason, red warning lights on the tower operated when ice was a hazard, and notices were posted on the fence adjacent to Jagger Lane, below the guy wire crossings.
On 19 March 1969, a combination of strong winds and the weight of ice that had formed around the top of the mast and on the guy wires caused the structure to collapse. The duty engineer wrote the following in the station's log book, demonstrating that failure of the structure was completely unexpected:
* Day hift Lee, Caffell, Vander Byl urnames* Ice hazard - Packed ice beginning to fall from mast & stays. Roads close to station temporarily closed by Councils. Please notify councils when roads are safe (!)
* Pye monitor - no frame lock - V10 replaced (low ins). Monitor overheating due to fan choked up with dust- cleaned out, motor lubricated and fan blades reset.
* Evening hift Glendenning, Bottom, Redgrove urnames* Mast :- Fell down across Jagger Lane (corner of Common Lane) at 17:01:45. Police, I.T.A. HQ, R.O., etc., all notified.
* Mast Power Isolator :- Fuses removed & isolator locked in the "OFF" position. All isolators in basement feeding mast stump also switched off. Dehydrators & TXs switched off.
The collapse left sections of twisted mast strewn over the transmitter site, and across the junction of Common Lane and Jagger Lane, and the surrounding fields. Although a falling stay cable cut through the roof of a local church and across the transmitter site buildings, no one was injured. It completely disabled the BBC2
BBC Two is a British free-to-air public broadcast television network owned and operated by the BBC. It covers a wide range of subject matter, with a remit "to broadcast programmes of depth and substance" in contrast to the more mainstream an ...
UHF transmitter and the ITV VHF transmitter, leaving several million people without service. BBC1
BBC One is a British free-to-air public broadcast television network owned and operated by the BBC. It is the corporation's flagship network and is known for broadcasting mainstream programming, which includes BBC News television bulletins, ...
VHF television transmissions continued from Holme Moss
Holme Moss ( a.s.l.) is high moorland on the border between the Holme Valley district of Kirklees in West Yorkshire and the High Peak district of Derbyshire in England. Historically on the boundary between the West Riding of Yorkshire and Che ...
. The Independent Television Authority
The Independent Television Authority (ITA) was an agency created by the Television Act 1954 to supervise the creation of "Independent Television" (ITV (TV network), ITV), the first commercial television network in the United Kingdom. The ITA exi ...
(ITA) owned a collapsible emergency mast, tall, which was moved to Emley from the Lichfield transmitting station
The Lichfield transmitting station is situated close to Tamworth in Staffordshire in the West Midlands between the A5 and A51. The nearest geographical feature is Hopwas Hill. The station is owned and operated by Arqiva. The mast is known ...
so that some service could be restored. ITV
ITV or iTV may refer to:
ITV
*Independent Television (ITV), a British television network, consisting of:
** ITV (TV network), a free-to-air national commercial television network covering the United Kingdom, the Isle of Man, and the Channel Islan ...
signals were restored to 2.5 million viewers within four days. The BBC #REDIRECT BBC #REDIRECT BBC
Here i going to introduce about the best teacher of my life b BALAJI sir. He is the precious gift that I got befor 2yrs . How has helped and thought all the concept and made my success in the 10th board exam. ...
...
provided a mobile mast on an
outside broadcast
Outside broadcasting (OB) is the electronic field production (EFP) of television or radio programmes (typically to cover television news and sports television events) from a mobile remote broadcast television studio. Professional video camera ...
van to restore a restricted BBC2 colour service within two days. The ITA bought a larger temporary mast from a Swedish company. A crew of Polish riggers were hired, and a mast was erected in under 28 days at a cost of £100,000. This mast could hold only one set of antennae, so many viewers in outlying areas still could not receive colour programmes. The taller mast was brought into service on 16 April. Some weeks later, the BBC erected a mast, improving coverage.
The accumulation of ice was believed to have caused the collapse, but a committee of inquiry attributed it to a form of
oscillation
Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum ...
which occurred at a low but steady wind speed. Modifications, including hanging of steel chains within each structure, were made to similar masts at Belmont and
Winter Hill. None of the modified masts have collapsed.
A section of the collapsed tower was converted for use as a racing control tower at Huddersfield Sailing Club.
New tower
After the setting up of temporary masts, erection of the current
concrete
Concrete is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens (cures) over time. Concrete is the second-most-used substance in the world after water, and is the most wi ...
tower began in 1969. It was not built on the site where the original mast had stood, but slightly to the south-east at . UHF (625-line colour) transmissions commenced on 21 January 1971, and the older VHF (405-line black and white) system became operational on 21 April 1971. Local residents did not wish to see another mast on Emley Moor, and a departure from usual designs was called for. The new structure consists of a tapered cylindrical pillar, tall, constructed of
reinforced concrete
Reinforced concrete (RC), also called reinforced cement concrete (RCC) and ferroconcrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having hig ...
, and is topped by a steel lattice mast which carries the antennae.
Structure
The structure is a tapered, reinforced concrete
tower
A tower is a tall Nonbuilding structure, structure, taller than it is wide, often by a significant factor. Towers are distinguished from guyed mast, masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting ...
. It is the tallest freestanding structure in the United Kingdom at a height of ,
[ taller than ]The Shard
The Shard, also referred to as the Shard of Glass, Shard London Bridge, and formerly London Bridge Tower, is a 72-storey skyscraper, designed by the Italian architect Renzo Piano, in Southwark, London, that forms part of The Shard Quarter dev ...
. Reaching the tower room at the top of the concrete structure at involves a seven-minute journey by lift. The antenna structure above it is a further tall. The mast's foundations penetrate into the ground, and the whole structure, including foundations, weighs . The tower was designed by Arup. When built, it was the third-tallest freestanding structure in Europe, after the Ostankino Tower at , and the Fernsehturm Berlin
The Berliner Fernsehturm or Fernsehturm Berlin ( en, Berlin Television Tower) is a television tower in central Berlin, Germany.
Located in the Marien quarter (''Marienviertel''), close to Alexanderplatz in the locality and district of Mitte, ...
(current height ). The top of the tower is above sea level
Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardised g ...
, due to the site's elevated position on the eastern edge of the Pennines. The tower is not open to the public. There was an observation area off the main road that runs past it, but as of 25 February 2018, this seems to be closed. The tower has a top-floor interior equipment area at a height of , which is accessible to people.
In 2002, English Heritage
English Heritage (officially the English Heritage Trust) is a charity that manages over 400 historic monuments, buildings and places. These include prehistoric sites, medieval castles, Roman forts and country houses.
The charity states that i ...
granted the tower Grade II listed building
In the United Kingdom, a listed building or listed structure is one that has been placed on one of the four statutory lists maintained by Historic England in England, Historic Environment Scotland in Scotland, in Wales, and the Northern Irel ...
protection under UK law, being the lowest and most common of three categories, for meeting its criteria of significant architectural or historic interest.[
]
Ownership
The tower is currently owned by Arqiva
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 ...
, previously the Independent Broadcasting Authority
The Independent Broadcasting Authority (IBA) was the regulatory body in the United Kingdom for commercial television (ITV and Channel 4 and limited satellite television regulation – cable television was the responsibility of the Cable Authorit ...
Engineering section, privatised as NTL Broadcast.
Broadcast details
Emley Moor tower broadcasts six digital television
Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative advanc ...
multiplexes, three digital radio
Digital radio is the use of digital technology to transmit or receive across the radio spectrum. Digital transmission by radio waves includes digital broadcasting, and especially digital audio radio services.
Types
In digital broadcasting syst ...
ensembles, and two independent local radio stations (Capital Yorkshire
Capital Yorkshire is a regional radio station owned by Global as part of the Capital network. It broadcasts to South Yorkshire, West Yorkshire, the East Riding of Yorkshire and Northern Lincolnshire from studios in Leeds, West Yorkshire, E ...
and Heart Yorkshire
Heart Yorkshire (previously Real Radio Yorkshire) is a regional radio station owned by Communicorp UK and operated by Global as part of the Heart network. It broadcasts to South and West Yorkshire from studios in Leeds. ), over an area of approximately . It is the main station for 57 relays and repeaters throughout Yorkshire
Yorkshire ( ; abbreviated Yorks), formally known as the County of York, is a Historic counties of England, historic county in northern England and by far the largest in the United Kingdom. Because of its large area in comparison with other Eng ...
and the surrounding counties. In July 2007, it was confirmed by Ofcom
The Office of Communications, commonly known as Ofcom, is the government-approved regulatory and competition authority for the broadcasting, telecommunications and postal industries of the United Kingdom.
Ofcom has wide-ranging powers acros ...
that Emley Moor would remain a B group transmitter after digital switchover
The digital television transition, also called the digital switchover (DSO), the analogue switch/sign-off (ASO), the digital migration, or the analogue shutdown, is the process in which older analogue television broadcasting technology is conv ...
(DSO).
The area is important for RF, radio frequency
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around to around . This is roughly between the upp ...
transmission, and from the foot of the structure, both Holme Moss
Holme Moss ( a.s.l.) is high moorland on the border between the Holme Valley district of Kirklees in West Yorkshire and the High Peak district of Derbyshire in England. Historically on the boundary between the West Riding of Yorkshire and Che ...
and the Moorside Edge transmitter are visible. They are within a ten mile (16 km) radius, and are located to the southwest and west-northwest, respectively.
Its television coverage area is one of the largest in the UK; covering most of Yorkshire including Hull, Leeds
Leeds () is a city and the administrative centre of the City of Leeds district in West Yorkshire, England. It is built around the River Aire and is in the eastern foothills of the Pennines. It is also the third-largest settlement (by populati ...
, Sheffield
Sheffield is a city status in the United Kingdom, city in South Yorkshire, England, whose name derives from the River Sheaf which runs through it. The city serves as the administrative centre of the City of Sheffield. It is Historic counties o ...
and York
York is a cathedral city with Roman origins, sited at the confluence of the rivers Ouse and Foss in North Yorkshire, England. It is the historic county town of Yorkshire. The city has many historic buildings and other structures, such as a ...
. Some transmissions can be received in Greater Manchester
Greater Manchester is a metropolitan county and combined authority, combined authority area in North West England, with a population of 2.8 million; comprising ten metropolitan boroughs: City of Manchester, Manchester, City of Salford, Salford ...
across the Pennines
The Pennines (), also known as the Pennine Chain or Pennine Hills, are a range of uplands running between three regions of Northern England: North West England on the west, North East England and Yorkshire and the Humber on the east. Commo ...
due to the height of the antenna on the tower and the powerful signal.
Repairs and alterations
Over the years, the concrete structure has been updated to reflect the changing nature of communications and technology. At the top and bottom of the tower, supporting structures have been attached to accommodate dishes and aerials.
The BBC #REDIRECT BBC #REDIRECT BBC
Here i going to introduce about the best teacher of my life b BALAJI sir. He is the precious gift that I got befor 2yrs . How has helped and thought all the concept and made my success in the 10th board exam. ...
...
reported in July 2006 that for up to two weeks, it would broadcast analogue and digital signals at a lower power than usual, or shut down between 09:00 and 15:00 BST on weekdays from late July until 4 August, to allow