| 词条 | Minami-Tori-shima LORAN-C transmitter |
| 释义 |
|name= Minami-Tori-shima LORAN-C Mast (1st) |building_type=Mast radiator insulated against ground |location=Minami-Tori-shima, Japan |Status=Dismantled |completion_date=1963 |destroyed=1985 |height={{convert|411.5|m|ft|2|abbr=on}} |architect= |main_contractor= }}{{Infobox building |name= Minami-Tori-shima LORAN-C Mast (2nd) |building_type=Mast radiator insulated against ground |location=Minami-Tori-shima, Japan |Status=Dismantled |completion_date=1986 |destroyed=2000 |height={{convert|213.4|m|ft|2|abbr=on}} |architect= |main_contractor= }}{{Infobox building |name= Minami-Tori-shima LORAN-C Mast (3rd) |building_type=Mast radiator insulated against ground |location=Minami-Tori-shima, Japan |Status=Dismantled |completion_date=2000 |destroyed=2010 |height={{convert|213|m|ft|2|abbr=on}} |architect= |main_contractor={{Flagicon image|Flag of the Japan Self-Defense Forces.svg|size=23px}} Japan Self-Defense Forces }} Minami-Tori-shima LORAN-C transmitter is a former LORAN-C transmitter on Minami-Tori-shima in Ogasawara, Tokyo, Japan at ({{coord|display=inline,title|24|17|8|N|153|58|54|E}}). Until 1993 it was part of Grid 9970 and used a transmission power of 4000 kilowatts, which was more than the most powerful broadcasting stations ever used. Until 1985 Minami-Tori-shima LORAN-C transmitter had a 411.48 metre (1350 ft) tall guyed mast radiator as antenna, which was built in 1964. In 1985/86 the 411.48 metre tower was replaced by a 213.4 metre tall tower. In 2000 the tower of the station was again dismantled and replaced by a new one with a height of 213 metres. Minami-Tori-shima LORAN-C transmitter was the X-Ray secondary station of the North West Pacific LORAN-C Chain GRI 8930. Its transmission power was reduced to 1100 kW. On December 1, 2009, the station was abolished due to a decline in users.[1] See also
References1. ^{{cite web|url=http://www.kaiho.mlit.go.jp/info/kouhou/h21/k20090601/k090601.pdf|title=北西太平洋ロランCチェーンの縮小（南鳥島局の廃止）について|date=2009-06-01|accessdate=2016-10-08|publisher=Japanese Coast Guard|format=PDF|language=Japanese}} External links
2 : LORAN-C transmitters in Japan|Buildings and structures in Tokyo |
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