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Lualualei_VLF_transmitter-0

Lualualei VLF transmitter-0

lualualei vlf transmitter wiki lualualei vlf transmitter vlf transmitter lualualei very low frequency lualualei vlf transmitter. Author: Inknow.

Overview[]

VLF transmitter Lualualei is a facility of the United States Navy near Lualualei, Hawaii transmitting orders to submerged submarines in the very low frequency (VLF) range. VLF transmitter Lualualei, which operates under the callsign NPM on 21.4 kHz and 23.4 kHz, uses an antenna consisting of two guyed masts, each 458.11 metres (1503 feet) tall.

Both masts are umbrella antennas. They are fed by an overhead cable, fixed to the mast at one end, and to a small mast near the helix building at the opposite end. As the small mast is grounded, the feeder is attached to it with an insulator in the span field.

Stats[]

VLF transmitter Lualualei, Mast 1.

There are 2 VLF masts in use. No others were or are officially planned to be made. There are also some building for staff, equipment, supplies etc. There is also a perimeter fence, security booths and other boundary markers and\or barriers


  • VLF transmitter Lualualei, Mast 1.
  1. Status- Complete.
  2. Type Mast- radiator insulated against ground.
  3. Location Lualualei, Hawaii, United States.
  4. Coordinates 21°25′13.38″N 158°09′14.35″W.
  5. Completed 1972.
  6. Height 458.11 m (1,502.99 ft).
  7. Main contractor US Navy.


  • VLF transmitter Lualualei, Mast 2.
  1. Status Complete.
  2. Type Mast radiator insulated against ground.
  3. Location Lualualei, Hawaii, United States.
  4. Coordinates 21°25′11.87″N 158°08′53.67″W.
  5. Completed 1972.
  6. Height 458.11 m (1,502.99 ft).
  7. Main contractor US Navy.

History[]

Both masts, built in 1972, were not only the tallest towers in the Western hemisphere at the time, used for military purposes, they are also the tallest towers used for long wave transmissions in the Western hemisphere and since the collapse of Warsaw Radio Mast perhaps the tallest structures electrically insulated against ground.

Also see[]

  1. Submarines
  2. Secret broadcasting
  3. Clam Lake, Wisconsin
  4. VLF Transmitter Cutler
  5. Telecommunications masts
  6. Jim Creek Naval Radio Station
  7. Naval Communication Station Harold E. Holt

Sources[]

  1. http://www.contelec.com/lfvlf_installations.htm
  2. http://dbpedia.org/page/Lualualei_VLF_transmitter
  3. http://images.search.yahoo.com/search/images;_ylt=A0LEV1jdt3BZSfkA0qdXNyoA;_ylu=X3oDMTByMjB0aG5zBGNvbG8DYmYxBHBvcwMxBHZ0aWQDBHNlYwNzYw--?p=Lualualei+VLF+transmitter&fr=yset_chr_cnewtab
  4. https://www.wikidata.org/wiki/Q984166
  5. http://military.wikia.com/wiki/Lualualei_VLF_transmitter
  6. https://en.wikipedia.org/wiki/Lualualei_VLF_transmitter
  7. http://n.stuccu.co.uk/s/Lualualei+Vlf+Transmitter
  8. http://www.wikimapia.org/1833868/
  9. http://skyscraperpage.com/cities/?buildingID=57182
  10. http://skyscraperpage.com/cities/?buildingID=57183
  11. http://www.skyscraperpage.com
  12. http://www.vlf.it/trond2/20-25khz.html
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