Grimeton Radio Station

Grimeton Radio Station
Grimeton Radiostation (Swedish)
The main building with a log-periodic antenna from the 1960s in the background.
Interactive fullscreen map
General information
Architectural style	Nordic Classicism
Location	Grimeton, Varberg Municipality, Halland County, Sweden
Coordinates	57°6′50.4″N 12°24′15.8″E / 57.114000°N 12.404389°E / 57.114000; 12.404389
Construction started	November 1922
Completed	24 May 1925
Opened	1 December 1924
Inaugurated	2 July 1925
Owner	Stiftelsen Världsarvet Grimeton
Website
grimeton.org
UNESCO World Heritage Site
Official name	Grimeton Radio Station, Varberg
Criteria	Cultural: ii, iv
Reference	1134
Inscription	2004 (28th Session)
Area	109.09 ha
Buffer zone	3,854 ha

Grimeton Radio Station (Swedish pronunciation: [ˈɡrɪ̂mːɛˌtɔn])^[1] in southern Sweden, close to Varberg in Halland, is an early longwave transatlantic wireless telegraphy station built in 1922–1924, that has been preserved as a historical site. From the 1920s through the 1940s it was used to transmit telegram traffic by Morse code to North America and other countries, and during World War II was Sweden's only telecommunication link with the rest of the world. It is the only remaining example of an early pre-electronic radio transmitter technology called an Alexanderson alternator. It was added to the UNESCO World Heritage List in 2004, with the statement: "Grimeton Radio Station, Varberg is an exceptionally well preserved example of a type of telecommunication centre, representing the technological achievements by the early 1920s, as well as documenting the further development over some three decades." The radio station is also an anchor site for the European Route of Industrial Heritage.^[2] The transmitter is still in operational condition, and each year on a day called Alexanderson Day is started up and transmits brief Morse code test transmissions, which can be received all over Europe.