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|height = |gridref = J278727 |built = 1959 |demolished = |collapsed = |relay = Divis |BBC = BBC Northern Ireland |ITV = UTV }} The Black Mountain transmitting station is a broadcasting and telecommunications facility, situated on land above Ordnance Datum (mean sea level) to the west of the city of Belfast, in Northern Ireland (). It includes a guyed steel lattice mast which is () in height. The height of the top of the structure above mean sea level is . It is owned and operated by Arqiva. ==History== *1959: The station is commissioned by the Independent Television Authority to transmit ITV signals (provided by Ulster Television) on 405-line VHF, using Channel 9 (Band III) on high power. Service commences on 1 October. *1970: UHF 625-line PAL colour TV begins at high power from the adjacent Divis transmitting station. *1975: A low power UHF filler service begins, designed to cover districts close to the station that cannot pick up Divis. *1976: FM commercial radio station Downtown Radio (later Cool FM) starts transmissions. *1985: VHF 405-line television is discontinued in the UK, having been replaced by the UHF service. The VHF service from Black Mountain closes. *1990: FM commercial radio station BCR (later City Beat) begins on 96.7 MHz on 6 April. *1997: Analogue transmissions of Channel 5 begin at high power. *2001: DAB Digital Radio transmissions start from Score Northern Ireland on block 12D on 6 September. *2005: FM station U105 begins on 105.8 MHz on 14 November. *2012: On 24 October analogue television services are ceased and replaced by digital multiplexes. NImux launches at this and two other transmitter sites in Northern Ireland transmitting TG4, RTÉ One, RTÉ Two and RTÉ Raidió na Gaeltachta to the region. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Black Mountain transmitting station」の詳細全文を読む スポンサード リンク
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