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Clam Lake, Wisconsin, USA
\nFrequency: 76 Hz at 3 MW (3,000 kW)
\nThe U.S. Navy operates two extremely low frequency radio transmitters to communicate with its deep diving submarines. The sites at Clam Lake, Wisconsin and Republic, Michigan are operated by the Naval Computer and Telecommunications Area Master Station – Atlantic. The Clam Lake site, located in the Chequamegon National Forest in Northern Wisconsin, is the site where testing began for ELF communications more than 30 years ago. The site has more than 28 miles of over-head signal transmission line thatform part of the “electrical” antenna to radiate the ELF signal from the two-acre transmitting facility.
\nThe Clam Lake ELF radio station broadcasts messages to the fleet as required by the Navy Submarine Broadcast Control Authority in Norfolk, Virginia or Pearl Harbor, Hawaii. For the U.S. submarine fleet to perform its mission, it must remain silent and be undetectable. The Navy’s ELF communications system is the only operational communications system that can penetrate seawater to great depths and is virtually jam proof from both natural and man-made interference. Source: fas.org
\nalso read:
\nELF Communications System Ecological Monitoring Program: Final Summary Report
\nExtremely Low Frequency Transmitter Site
\nELF Cables
\n
Republic, Michigan, USA
\nSecond part of two part transmitter
The U.S. Navy operates two extremely low frequency radio transmitters to communicate with its deep diving submarines. The sites at Clam Lake, Wisconsin and Republic, Michigan are operated by the Naval Computer and Telecommunications Area Master Station – Atlantic. The Clam Lake site, located in the Chequamegon National Forest in Northern Wisconsin, is the site where testing began for ELF communications more than 30 years ago. The site has more than 28 miles of over-head signal transmission line thatform part of the “electrical” antenna to radiate the ELF signal from the two-acre transmitting facility.
\nThe Clam Lake ELF radio station broadcasts messages to the fleet as required by the Navy Submarine Broadcast Control Authority in Norfolk, Virginia or Pearl Harbor, Hawaii. For the U.S. submarine fleet to perform its mission, it must remain silent and be undetectable. The Navy’s ELF communications system is the only operational communications system that can penetrate seawater to great depths and is virtually jam proof from both natural and man-made interference. Source: fas.org
\nalso read:
\nELF Communications System Ecological Monitoring Program: Final Summary Report
\nExtremely Low Frequency Transmitter Site
\nELF Cables
\n
Arkhangel'skoye, Tula Oblast, Russia
Zevs, 82 Hz transmitter
\nCalculations performed on data collected back in 1990, also show us that the 82 Hz Zevs ELF transmitter is 10 dB more powerful then the US Navy 76 Hz ELF transmissions from the dual WMT/MTF sites. Source: VLF.it
\n
South Vijayanarayanam, India
\nMultiple broadcast frequencies:
\nCallsign: VTX1 - 16300 Hz
\nCallsign: VTX2 - 17000 Hz
\nCallsign: VTX3 - 18200 Hz
\nCallsign: VTX4 - 19200 Hz
\nAWESOME Network
\nAWESOME VLF Transmitters
Novik, Norway
\nFrequency: 16400 Hz
\nCallsign: JXN
\nLocator: JP66wx
\nVLF transmitter, which transmits on 16.4 kHz messages to submerged submarines.\nIt has no radio tower, but uses an antenna spun between two mountains.
\nTransmits only 6 times a day: 00:00-00:55, 04:00-04:55, 8:00-08:55, 12:00-12:55, 16:00-16:55, 20:00-20:55 UTC.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Grimeton, Sweden
\nFrequency: 17200 Hz
\nCallsign: JXN
\nLocator: JO67ec
\nThe Grimeton VLF transmitter is a VLF transmission facility at Grimeton close to Varberg, Sweden. It has the only workable machine transmitter in the world and is classified as World Heritage Site.
\nThe transmitter was built in 1922 to 1924; to operate at 17.2 kHz, although it is designed for frequencies around 40 kHz. The radiating element is a wire aerial hung on six 127-metre high freestanding steel pylons, that are grounded.
\nThe Grimeton VLF transmitter location is also used for shortwave transmissions, FM and TV broadcasting. For this purpose, a 260 metre high guyed steel framework mast was built in 1966 next to the building containing the 40 kHz transmitter.
\nHistoric station only active twice-yearly on special occasions. SAQ website
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
\n
Woodside, Australia (USA)
\nFrequency: 18600 Hz
\nCallsign: NST
\nLocator: IO83nt
\nFormer Omega Station G on 13kHz
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Anthorn, UK
\nCallsign: GBZ - Frequency: 19600 Hz
\nCallsign: MSF - Frequency: 60000 Hz at 17 kW ERP
\nLocator: IO84iv
\nLORAN-C (GRI 6731)
\nGBZ is the call sign of a British VLF transmitter on 19.6 kHz from Anthorn, Cumbria (formerly from Criggion, Powys), which is involved with transmitting encrypted signals to submarines. Although the signals of GBZ cannot be decrypted by common means, its reception - if its signal is shown in the form of spectrograms - is very interesting, because the signals of GBZ show figures looking like fishes, garlands and ornaments on the spectrograms.[1] At certain times these signals are also transmitted as strong pulses, so-called superpulses, which can oversteer the amplifier of a PC soundcard at distances of a hundred kilometres away from transmission site. Source: Wikipedia
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
North West Cape, Exmouth, Australia
\nFrequency: 19800 Hz at 2000 kW
\nCallsign: NWC
\nLocator: OG78be
\nHarold E. Holt Naval Station: 2 MW transmission - 14-28 KHz
\nThe station features thirteen tall radio towers. The tallest tower is called Tower Zero and is 387 m (1,270 ft) tall, and was for many years the tallest man-made structure in the Southern Hemisphere. Six towers, each 304 metres tall, are evenly placed in a hexagon around Tower Zero. The other six towers, which are each 364 metres tall, are evenly placed in a larger hexagon around Tower Zero. Source: Wikipedia
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Isola di Tavolara, Italy
\nFrequency: 20270 Hz at 20 kW
\nCallsign: ICV
\nLocator: JN40uw
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Datong, China
\nFrequency: 20600 Hz
\nCallsign: 3SB
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Sainte-Assise, France
\nFrequency: 20900 Hz at 400 kW
\nCallsign: JXN
\nLocator: JN18gn
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Changde, China
\nFrequency: 21100 Hz
\nCallsign: 3SA
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Pearl Harbour, Lualuahei, HI
\nFrequency: 21400 Hz at 424 kW
\nCallsign: NPM
\nLocator: BL01wk
\nVLF 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 as antenna two guyed masts, each 458.11 metres (1503 feet) tall. Both masts, which were 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. Source: Wikipedia
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Rosnay, France
\nFrequency: 18300 Hz at 400 kW
\nFrequency: 21750 Hz
\nFrequency: 22600 Hz
\nFrequency: 15100 Hz
\nCallsign: HWU
\nLocator: JN06or
\nHWU alternates between 18.3kHz, 21.75kHz and 22.6kHz. 15.1kHz is seldom used
\nHWU transmitter is a French facility for transmitting orders to submerged submarines of the French Navy. HWU transmitter works on 18.3 kHz, 20.9 kHz and 21.7 kHz. Its transmissions can be easily received in Europe when the transmitters are active by using a PC soundcard connected to a receiving coil and FFT software. Although the signals are very easy to receive, it may be impossible to decipher them without knowing the cipher and key used in the communications. Source: Wikipedia
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Skelton, UK
\nFrequency: 22100 Hz
\nCallsign: GQD
\nLocator: IO84nr
\nBBC Skelton Broadcasting Station locateb bewteen Carlisle City and Penrith Town. A transmitter park used mainly for short-wave broadcasts. Many 350kW Transmitters installed in Skelton. It contains the second tallest structure in the UK, a 365m (1200ft) mast used to send coded messages to Royal Navy submarines.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Ebino, Japan
\nFrequency: 22200 Hz at 200 kW
\nCallsign: NDT
\nLocator: PM52jb
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Rhauderfehn, Germany
\nFrequency: 23400 Hz at 800 kW
\nCallsign: DHO38
\nLocator: JO33tb
\nNATO Facility DHO38 is a VLF transmitter used by the German Navy near Rhauderfehn, Saterland, Germany. It is used to transmit coded orders to submarines of the German Navy and navies of other NATO countries. Source: Wikipedia
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Cutler, Maine, USA
\nFrequency: 24000 Hz at 1800 kW
\nCallsign: NAA
\nLocator: FN64ip
\nCutler Naval Station has a transmission power of 1800 kW, making it the most powerful VLF-transmitter in the world. The transmission consists of a continuous encrypted FSK (F1B) signal at 200 baud. The transmitter operates on 24.0 kHz. In the past it operated on 17.8 kHz. The callsign of the station is NAA.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
1800 kW
Oso Wash, Jim Creek, Washington, USA
\nFrequency: 24800 Hz at 1200 kW
\nCallsign: NLK
\nLocator: CN98ae
\nThe primary mission of this radio site is to provide VLF radio transmitting capabilities for the Pacific submarine fleet. Established in the 1950s, the 1.2 million watt transmitting system developed for the site remains 'state -of-the-art' in producing low frequency emissions world-wide. In fact it is one of the most powerful transmitters in the world.[1] Located near Arlington, Washington, in the foothills of the Cascades, north of Seattle, the site has 5,000 largely forested acres. Source: Wikipedia
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
LaMoure, North Dakota, USA
\nFrequency: 25200 Hz at 200 kW
\nCallsign: NLM
\nLocator: EN06ti
\nNCTAMS LANT detachment Lamoure
\nFormer Omega Station D on 13.1kHz
\nOff-air on Tuesdays from 12:00 to 19:00 UTC.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Bafa, Turkey
\nFrequency: 26700 Hz at 225 kW
\nCallsign: TBB
\nLocator: KM37pj
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Grindavik, Iceland (USA)
\nFrequency: 37500 Hz
\nCallsign: NRK/TFK
\nLocator: HP83su
\nNRTF Grindavik had two LF towers (800' and 600' high), the highest structures in Iceland at the time. Both of these towers have since been replaced. In 1983, the 600' tower was replaced with one of the same height and Helix house components were replaced with material from the closed down LF site in Londonderry, Ireland. 10 years later the 800' tower was replaced with a 1000' high structure broadbanded like the other one, and a 2500 SF Helix House. Source: Global Security
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Mount Ootakadoya, Fukushima prefecture, Japan
\nFrequency: 40000 Hz at 50kW/12.5kW ERP
\nCallsign: NDT
\nLocator: QM07ki
\nTransmission is stopped since 10h46 UT on March 12, 2011 because of the evacuation of the area around the Fukushima Nuclear Power Station damaged by the March 11, 2011 earthquake and tsunami JJY-40 website
\nTime signal transmitter
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Aguada, Puerto Rico (USA)
\nFrequency: 40800 Hz at 250 kW
\nCallsign: NAU
\nLocator: FK68jj
\nThe Naval Radio Transmitter Facility Aguada, Puerto Rico, apparently consists of three locations: the primary 330 acre site in Aguada County; the Naval Radio Receiever at a 242 acre site in Salinas County; and the Naval Radio Transmitter at a 408 acre site in Isabela County. Source: Global Security
\nPhotos
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Niscemi, Italy
\nFrequency: 45900 Hz at 250 kW
\nCallsign: NSY
\nLocator: JM77fd
\nThe mission is to provide HF and LF transmitter support to Naval Computer and Telecommunications Station, Sicily in support of European and Mediterranean theater commanders. Source: Global Security
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Sicily, Italy (USA)
\nFrequency: 45900 Hz
\nCallsign: NSC
\nLocation uncertain: 38N 13.5E
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Windsor, Nova Scotia, Canada
\nFrequency: 73.6kHz
\nCallsign: CFH?
\nWikipedia
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Marathon, Greece
\nFrequency: 49000 Hz
\nCallsign: SXA
\nLocator: KM28ad
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Crimond, UK
\nFrequency: 51950 Hz
\nCallsign: GYW1
\nLocator: IO97bo
\nFrequency: 82.75kHz
\nCallsign: MKL
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Fort Collins, Colorado, USA
\nFrequency: 60000 Hz at 65 kW
\nCallsign: WWWB
\nLocator: DN70lq
\nTime Signal
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Mount Hagane, Fukuoka prefecture, Japan
\nFrequency: 60000 Hz at 50 kW/22.5 kW ERP
\nCallsign: JJY-60
\nLocator: PM53cl
\nTime Signal
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
La Régine, France
\nFrequency: 62600 Hz
\nCallsign: FUG
\nLocator: JN13bj
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Kerlouan, France
\nFrequency: 65800 Hz
\nCallsign: FUE
\nLocator: IN78tp
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Lintong, Shaanxi, China
\nFrequency: 68500 Hz at 20 kW ERP
\nCallsign: BPC
\nLocator: OM44sw
\nTime Signal Active 0800-1200, 2200-2330 UTC. Time-shared with BPL 100kHz
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Mainflingen, Germany
\nFrequency: 77500 Hz at 30 kW ERP
\nCallsign: DCF77
\nLocator: JO40ma
\nTime Signal
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Inskip, UK
\nFrequency: 81000 Hz
\nCallsign: GYN2
\nLocator: IO83nt
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
300 Hz - 300 kW
312 Hz - 300 kW
313 Hz - 300 kW
309 Hz - 300 kW
307 Hz - 300 kW
311 Hz - 300 kW
319 Hz - 300 kW
315 Hz - 300 kW
286 Hz - 300 kW
314 Hz - 300 kW
324 Hz - 300 kW
292 Hz - 300 kW
291 Hz - 300 kW
301 Hz 300 kW
306 Hz 100 kW
290 Hz - 13 kW
325 Hz - 300 kW
287 Hz - 170 kW
285 Hz - 300 kW
316 Hz - 300 kW
318 Hz - 300 kW
310 Hz - 300 kW
Novosibirsk, Russia
\nFrequency: Multiple at 500 kW
\nCallsign: RA3
\nAlpha RSDN-20
\nOperates on the frequencies: 11904.76190, 12648.80952, 14880.95238, 14881.09127, 12090.77381, 12044.27083 Hz.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
\n
Martanskaya, Krasnodar, Russia
\nFrequency: Multiple at 500 kW
\nCallsign: RA2
\nAlpha RSDN-20
\nOperates on the frequencies: 11904.76190, 12648.80952, 14880.95238, 14881.09127, 12090.77381, 12044.27083 Hz.
\nBETA Time Signal RJH63
\nOperates on the frequencies: 20.50, 23.00, 25.00, 25.10, and 25.50 kHz.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
500kW
Elban, Khabarovsk, Russia
\nFrequency: Multiple at 500 kW
\nCallsign: RA3
\nAlpha RSDN-20
\nOperates on the frequencies: 11904.76190, 12648.80952, 14880.95238, 14881.09127, 12090.77381, 12044.27083 Hz.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Revda, Murmansk, Russia
\nFrequency: Multiple at 500 kW (assumed, not in AWESOME documentation)
\nCallsign: RA4 (assumed, not in AWESOME documentation)
\nAlpha RSDN-20
\nOperates on the frequencies: 11904.76190, 12648.80952, 14880.95238, 14881.09127, 12090.77381, 12044.27083 Hz.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
Seydi, Lebap, Turkmenistan
\nFrequency: Multiple at 500 kW (assumed, not in AWESOME documentation)
\nCallsign: RA4 (assumed, not in AWESOME documentation)
\nAlpha RSDN-20
\nOperates on the frequencies: 11904.76190, 12648.80952, 14880.95238, 14881.09127, 12090.77381, 12044.27083 Hz.
\nAWESOME Network
\nAWESOME VLF Transmitters
\nStanford VLF Group
\n \n The \"Vileyka\" VLF transmitter is the site of the 43rd Communications Center of the Russian Navy (Russian: 43-й узел связи ВМФ России), situated west of the town of Vileyka in Belarus (54°27′49″N 26°46′44″ECoordinates: 54°27′49″N 26°46′44″E). The \"Vileyka\" VLF transmitter is an important facility for transmitting orders to submarines in the very low frequency range. Beside this, it is used for transmitting the time signal RJH69 at certain times.
As the former Goliath transmitter of the German Navy in World War II, the antenna system of the \"Vileyka\" VLF transmitter consists of 3 antenna systems with a central mast insulated against ground from which antenna wires run to 6 grounded ring masts, where they are fixed by insulators. As at former Goliath transmitter, 3 ring masts carry two antenna systems, so there are only 15 ring masts on the site. A further common ground to former Goliath transmitter is, that the ring masts of the Goliath transmitter are masts of lattice steel with triangular cross section, while the central masts are steel tube masts.
The ring masts of the \"Vileyka\" VLF transmitter are 270 metres and the central masts of VLF transmitter are 305 metres tall. Their height surpasses therefore the height of the masts of former Goliath transmitter nearly exactly of 100 metres.
http://en.wikipedia.org/wiki/Vileyka_VLF_transmitter