NationMaster - Encyclopedia: Grimeton VLF transmitter

The Grimeton VLF transmitter is a VLF transmission facility near Grimeton close to Varberg in Sweden. It was built in 1923 and has the only workable machine transmitter in the world. For its radiating element it uses a wire aerial hung on six 127-metre high freestanding steel towers looking like gigantic pylons. These towers are grounded. Image:Grimetonmasterna. ... Image:Grimetonmasterna. ... Very low frequency or VLF refers to radio frequencies (RF) in the range of 3 to 30 kHz. ... Varberg Municipality is a Municipality in Halland County, in southwest Sweden. ... 1923 (MCMXXIII) was a common year starting on Monday (link will take you to calendar). ... An Alexanderson alternator is a rotating machine for the generation of high frequency with frequencies until 100 kHz. ...

The VLF transmitter Grimeton was used until the fifties for transatlantic radio telegraphy to Radio Central in Long Island, USA. After the fifties it was used until 1996 for transmitting orders to submarines. In 1968 therefore a second transmitter was installed. This transmitter uses transistor and tube technology unlike the machine transmitter, which works on 17.2 kHz, designed for frequencies around 40 kHz, but using the same aerial. In 1996 the machine transmitter became obsolete and went out of service. Because it is in good condition it was declared a national monument. On special occasions such as Alexanderson Day it is used for transmitting Morse messages on 17.2 kHz. Its signal for identification is SAQ (... .- --.- )
Mercator projection of Long Island Long Island is an island in New York, USA. At 1,377 square miles (3567 kmÂ²) and is home to 7. ... German UC-1 class World War I submarine A model of Gunter Priens Unterseeboot 47 (U-47), German WWII Type VII diesel-electric hunter-killer (SSK) submarine USS Virginia, a Virginia-class nuclear attack (SSN) submarine A submarine is a specialized watercraft that can operate underwater. ... The Alexanderson Day (named after the inventor Ernst Fredrik Werner Alexanderson) is the great day of the open oor at the VLF transmitter Grimeton. ...

The machine transmitter can be visited in the summertime. It is a great attraction especially on Alexanderson Day.

The transmitter from the 1960s is still used by the Swedish Navy. Since it uses the same aerial as the machine transmitter a simultaneous operation of both transmitters, which would require expensive frequency filters, is not possible. So these special transmissions are very rare. The Grimeton VLF transmitter is not only used for VLF transmission. It is also used for shortwave transmissions and for FM and TV broadcasting. Therefore a 260 metre high guyed steel framework mast was built in 1966 next to the building containing the transmitter for 40 kHz. The Swedish Naval Ensign Coat of arms of the Swedish Navy The Swedish Navy (Swedish: Marinen) is the naval branch of the Swedish Armed Forces. ... The abbreviations FM, Fm, and fm may refer to: Electrical engineering Frequency modulation (FM) and its most common applications: FM broadcasting, used primarily to broadcast music and speech at VHF frequencies FM synthesis, a sound-generation technique popularized by early digital synthesizers Science Femtometre (fm), an SI measure of length... 1966 (MCMLXVI) was a common year starting on Saturday (the link is to a full 1966 calendar). ...

On July 2, 2004 the Grimeton VLF transmitter was declared a World Cultural Heritage site by UNESCO. July 2 is the 183rd day of the year (184th in leap years) in the Gregorian Calendar, with 182 days remaining. ... 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... Site #86: Memphis and its Necropolis, including the Pyramids of Giza (Egypt). ... UNESCO logo UNESCO (United Nations Educational, Scientific and Cultural Organization) is a specialized agency of the United Nations established in 1945. ...

See also

Warsaw radio mast A mast is a man-made support structure, commonly used on sailing ships as support for sails, or on land as radio masts and towers used to support telecommunication equipment such as radio antennas (aerials in the UK). ... To meet Wikipedias quality standards, this article or section may require cleanup. ...

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World Heritage Sites in Sweden

Agricultural Landscape of Southern Öland | Birka and Hovgården | Church Village of Gammelstad, Luleå | Engelsberg Ironworks | High Coast | Karlskrona | Laponian Area | Mining Area of the Great Copper Mountain, Falun | Rock Carvings in Tanum | Royal Domain of Drottningholm | Skogskyrkogården | Struve Geodetic Arc (w/ nine other countries) | Varberg Radio Station | Visby Image File history File links Flag_of_Sweden. ... Elabana Falls is in Lamington National Park, part of the Central Eastern Rainforest Reserves World Heritage site in Queensland, Australia. ... â–¶(?) is an island in the Baltic Sea, located off the coast of SmÃ¥land. ... BjÃ¶rkÃ¶ around 1700, from Suecia antiqua et hodierna. ... AdelsÃ¶ is an island in the middle of the lake MÃ¤laren in Sweden near southern and northern BjÃ¶rkfjÃ¤rden. ... Gammelstad Church Town Gammelstad Church Town (Swedish: ) is a UNESCO World Heritage Site situated near the city of LuleÃ¥, Sweden at the northern end of the Gulf of Bothnia. ... Engelsberg is a village in Fagersta municipality in VÃ¤stmanland, Sweden. ... The High Coast (Swedish: HÃ¶ga Kusten) is a part of the Swedish coast on the Gulf of Bothnia, situated around Ã–rnskÃ¶ldsvik and notable as the type area for research on isostacy, the phenomenon having been first recognised and studied there. ... Karlskrona is a city in south-eastern Sweden. ... The Laponian area is a UNESCO World Heritage Site in the province of Laponia in northern Sweden. ... For the spiritual practise, see Falun Gong Falun is a city in central Sweden, in the province of Dalarna at 60Â°36Â´N 15Â°37Â´E. The town has about 35,000 inhabitants. ... Tanumshede (58. ... Drottningholm Palace. ... It has been suggested that this article or section be merged with SkogskyrkogÃ¥rden - The Woodland Cemetery. ... The Struve Geodetic Arc is a chain of survey triangulations stretching from Hammerfest in Norway to the Black Sea, through ten countries and over 2,820 km. ... Visby is the largest city on the Swedish island of Gotland;it is arguably the best-preserved medieval town in Scandinavia, and has become a UNESCO World Heritage Site. ...

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