Globecom Tower was a tall

guyed mast A guyed mast is a tall thin vertical structure that depends on guy lines (diagonal tensioned cables attached to the ground or a base) for stability. The mast itself has the compressive strength to support its own weight, but does not have the ...

for military

longwave In radio, longwave (also spelled long wave or long-wave and commonly abbreviated LW) is the part of the radio spectrum with wavelengths longer than what was originally called the medium-wave (MW) broadcasting band. The term is historic, dati ...

transmission at Northmountain on

Pituffik Space Base Pituffik Space Base ( ; ; ), formerly Thule Air Base (), is a United States Space Force base located on the northwest coast of Greenland in the Kingdom of Denmark under a defense agreement between Denmark and the United States. 150 United Stat ...

Greenland Greenland is an autonomous territory in the Danish Realm, Kingdom of Denmark. It is by far the largest geographically of three constituent parts of the kingdom; the other two are metropolitan Denmark and the Faroe Islands. Citizens of Greenlan ...

. Globecom Tower, whose design is similar to that of

Forestport Tower Forestport Tower was a guyed, steel tower, insulated from the earth, so that the entire structure was used to radiate electromagnetic waves in the VLF (Very Low Frequency; 3 kHz to 30 kHz) and LF (Low Frequency; 30 kHz to 300 ...

, 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 A mast radiator (or radiating tower) is a radio mast or tower in which the metal structure itself is energized and functions as an antenna. This design, first used widely in the 1930s, is commonly used for transmitting antennas operating at l ...

insulated against the ground and equipped with an elevator running up to a height of . 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 Oklahoma City (), officially the City of Oklahoma City, and often shortened to OKC, is the List of capitals in the United States, capital and List of municipalities in Oklahoma, most populous city of the U.S. state of Oklahoma. The county seat ...

and

Empire State Building The Empire State Building is a 102-story, Art Deco-style supertall skyscraper in the Midtown South neighborhood of Manhattan, New York City, United States. The building was designed by Shreve, Lamb & Harmon and built from 1930 to 1931. Its n ...

. 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 Telex is a telecommunication Telecommunication, often used in its plural form or abbreviated as telecom, is the transmission of information over a distance using electronic means, typically through cables, radio waves, or other communica ...

messages to

CFB Goose Bay Canadian Forces Base Goose Bay , commonly referred to as CFB Goose Bay, is a Canadian Forces Base located in the municipality of Happy Valley-Goose Bay in the province of Newfoundland and Labrador. It is operated as an air force base by ...

, Canada, on the longwave frequency 68.9 kHz with a power of 50 kW under the

callsign In broadcasting and radio communications, a call sign (also known as a call name or call letters—and historically as a call signal—or abbreviated as a call) is a unique identifier for a transmitter station. A call sign can be formally assi ...

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

* Turmbauwerke, Bauverlag GmbH, Wiesbaden (Deutschland), Germany, 1966 (there mentioned as "Funkmast in der Arktis")

External links

* https://web.archive.org/web/20080313111152/http://www.thuleforum.com/north_mountain.htm * http://www.skyscraperpage.com/diagrams/?b870 {{Supertall Military radio systems of the United States Former radio masts and towers Equipment of the United States Air Force Towers in Greenland Installations of the United States Air Force in Greenland 1954 establishments in Greenland Towers completed in 1954 1992 disestablishments in Greenland Buildings and structures demolished in 1992 sv:Globecom Tower