| 词条 | Globecom Tower |
| 释义 |
|name=Globecom Tower |building_type=Mast radiator insulated against ground |location=Thule Air Force Base, Greenland |status=Demolished |coordinates= {{Coord|76|33|10.84|N|68|33|3.45|W|display=inline, title}} |altitude= {{convert|180.45|m|ft|2|abbr=on}} |completion_date=1954 |destroyed=1992 |height={{convert|360|m|ft|2|abbr=on}} |architect= |main_contractor=United States Air Force }} Globecom Tower was a {{convert|378.25|m|ft|2|abbr=on}} tall guyed mast for military longwave transmission at Northmountain on Thule Air Base on Greenland. Globecom Tower, whose design is similar to that of Forestport Tower, is a guyed lattice steel tower with a triangular cross section (sidelength: 4.75 metres), which is anchored in three levels. It is designed as a mast radiator insulated against the ground and equipped with an elevator running up to a height of {{convert|360|m|ft|2|abbr=on}}. Globecom Tower was completed in 1954. It was, at completion, the tallest man-made structure outside of the United States and the third tallest in the world after KWTV Mast in Oklahoma City and Empire State Building. A great difficulty at its construction was that the ground on which it was built is permanently frozen. Globecom Tower was used for transmitting military telex messages to CFB Goose Bay, Canada, on the longwave frequency 68.9 kHz with a power of 50 kW under the callsign XPH. The tower, unused for years, was brought down with explosive charges set and detonated by US Army combat engineers in the spring of 1992. Literature
External links{{Portal|United States Air Force}}
5 : Military radio systems of the United States|Radio masts and towers|Equipment of the United States Air Force|Towers in Greenland|Installations of the United States Air Force in Greenland |
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