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The Holme Moss transmitting station is a radio transmitting station in West Yorkshire, England. The mast provides VHF coverage of both FM and DAB to a wide area around the mast including Derbyshire, Greater Manchester and West Yorkshire. == History == Holme Moss transmitting station was built by John Laing & Son〔Ritchie, p. 112〕 and became the BBC's third public television transmitter, launched on 12 October 1951. Of historic and technical interest, this operated on the 405 line VHF system, with black and white transmissions originally on British System A, Channel 2, with vision 51.75 MHz, 45 kW and sound 48.25 MHz, 12 kW.〔(TV COMES TO THE NORTH )〕 The mast survived until the end of the Band I TV broadcasts in 1985, with a replacement mast being constructed, adjacent, in 1984.〔(Holme Moss History )〕 The site is now owned and operated by Arqiva.〔Arqiva〕 Television signals from Holme Moss travelled much further than their intended service area. The Isle of Man and parts of the Irish Republic, mainly Dublin and Wicklow, could receive a signal from Holme Moss for some years. Emley Moor (55.44°, 15.53 km) and Moorside Edge (348.22°, 11.56 km) masts can be seen from the location. VHF Radio broadcasts started on 10 December 1956, for the Home, Light, Third Programme as they were then titled (see table). To this day, these three stations operate on exactly the same frequencies as they did in 1956. Subsequently BBC Local Radio services were added in the early 1970s. With the awarding of a national commercial station, Classic FM is also broadcast. DAB transmissions also now originate from here.〔(Holme Moss Transmitter )〕 These transmissions cover North West England (mainly Greater Manchester and Cheshire) and most of Yorkshire, however signals can be heard as far South as London and as far North as Scotland, whilst coverage can also be heard in Ireland and mainland Europe. The base of the station is 1719 ft (524 m) above sea level and the mast another 750 ft (228 m) on top of that. This gives a maximum aerial height of 2467 ft (752 m) which is one of the highest in the UK. The mast weighs 140 tons and is held up by 5 sets of stay levels. At 250 kW ERP on the national channels, it is one of the most powerful VHF sites in the country. 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「Holme Moss transmitting station」の詳細全文を読む スポンサード リンク
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