Nackasändaren is a facility for FM and TV-transmission at Nacka

Nacka

Nacka is the municipal seat of Nacka Municipality and part of Stockholm urban area in Sweden. The municipality's name harks back to an 16th century industrial operation established by the Crown at Nacka farmstead where conditions for water mills are good...

 in Metropolitan Stockholm. It used from 1956 to 1983 two 160 metre high guyed mast

Guyed mast

A guyed mast is a tall thin vertical structure that receives support from guy lines.Guyed masts are frequently used for radio masts. The mast can either support aerials mounted at its top, or the entire structure itself can function as an antenna ; this is called a mast radiator...

s, which were designed as mast radiator

Mast radiator

A mast radiator is a radio mast or tower in which the whole structure itself functions as an antenna. This design is commonly used for transmitting antennas operating at low frequencies, in the VLF, LF and MF ranges, in particular those used for AM broadcasting. The metal mast is electrically...

s for mediumwave transmission and therefore insulated against ground. In 1965 a further mast, a 299 metres tall guyed steel lattice mast for FM and TV-transmissions was built. This mast is in opposite to the lower masts grounded, but carried in its upper guys insulators in order not to disturb the radiation pattern of the mediumwave transmitter. After termination of the AM transmissions, which occurred until 1978 on 773 kHz and after 1978 on 774 kHz on June 1, 1981, the old masts were demolished on November 2, 1983 and December 7, 1983. At their location a second 299 metres tall steel framework mast for FM- and TV-transmission was built in 1984.
After cancellation of the mediumwave transmission, the insulators of the guys of the older 299 metres tall mast were obsolete and removed.

See also

• Radio masts and towers
  Radio masts and towers
  Radio masts and towers are, typically, tall structures designed to support antennas for telecommunications and broadcasting, including television. They are among the tallest man-made structures...
  
  
• List of masts
• List of tallest structures in Sweden

External links

• http://hem.passagen.se/longwave/Nacka.html
• http://hem.passagen.se/longwave/Nacka2.html
• http://hem.passagen.se/longwave/Nacka3.html