Ejde Loran-C transmitter was a Loran-C transmission facility near

Eiði Eiði (''Northern Faroese'' �ɔiːjɪ) is a village located on the north-west tip of Eysturoy in the Faroe Islands. It is the seat of Eiði Municipality. It is located 4 km north of Ljósá and 6.5 km west of Funningur. History Ei� ...

on the island of

Eysturoy Eysturoy (, meaning 'East Island') is a region and the second-largest of the Faroe Islands, both in size and population. Description Eysturoy is separated by a narrow sound from the main island of Streymoy. Eysturoy is extremely rugged, with som ...

, part of the

Faroe Islands The Faroe Islands ( ) (alt. the Faroes) are an archipelago in the North Atlantic Ocean and an autonomous territory of the Danish Realm, Kingdom of Denmark. Located between Iceland, Norway, and the United Kingdom, the islands have a populat ...

. The island is located in the

North Atlantic The Atlantic Ocean is the second largest of the world's five oceanic divisions, with an area of about . It covers approximately 17% of Earth's surface and about 24% of its water surface area. During the Age of Discovery, it was known for ...

and is part of

Denmark Denmark is a Nordic countries, Nordic country in Northern Europe. It is the metropole and most populous constituent of the Kingdom of Denmark,, . also known as the Danish Realm, a constitutionally unitary state that includes the Autonomous a ...

Loran-C

Loran-C is a system of

hyperbolic Hyperbolic may refer to: * of or pertaining to a hyperbola, a type of smooth curve lying in a plane in mathematics ** Hyperbolic geometry, a non-Euclidean geometry ** Hyperbolic functions, analogues of ordinary trigonometric functions, defined u ...

radio navigation Radio navigation or radionavigation is the application of radio waves to geolocalization, determine a position of an object on the Earth, either the vessel or an obstruction. Like radiolocation, it is a type of Radiodetermination-satellite servi ...

which developed from the earlier

LORAN LORAN (Long Range Navigation) was a hyperbolic navigation, hyperbolic radio navigation system developed in the United States during World War II. It was similar to the UK's Gee (navigation), Gee system but operated at lower frequencies in order ...

system. It uses low frequency signals from beacons to allow the receiver to determine their position. Conventional navigation involves measuring the distance from two known locations, radio navigation works in a similar way but using

radio direction finding Direction finding (DF), radio direction finding (RDF), or radiogoniometry is the use of radio waves to determine the direction to a radio source. The source may be a cooperating radio transmitter or may be an inadvertent source, a natural ...

. Radio navigation systems use a chain of three or four transmitters which are synchronised. Each chain has a primary station and the others are called secondaries. Each chain has a group repetition interval (GRI) which, multiplied by ten, is the time difference between pulses. The GRI identifies which chain a vessel is receiving. Loran-C was replaced by civilian

Satellite navigation A satellite navigation or satnav system is a system that uses satellites to provide autonomous geopositioning. A satellite navigation system with global coverage is termed global navigation satellite system (GNSS). , four global systems are ope ...

systems starting in the 1990s. The first services to close were in the United States and Canada in 2010. In 2014 France and Norway announced they were closing their transmitters, leaving the remaining stations in England and Germany unable to operate. The stations in Norway closed on 31 December 2015.

Eiði Loran transmitter

Eiði started operations in 1960 and was part of several Loran-C chains. It was the master station of the Eiði chain (GRI 9007). The 190m mast collapsed on 28 March 1962 making the transmitter at

Jan Mayen Jan Mayen () is a Norway, Norwegian volcanic island in the Arctic Ocean with no permanent population. It is long (southwest-northeast) and in area, partly covered by glaciers (an area of around the Beerenberg volcano). It has two parts: la ...

the master. The mast was rebuilt and the station continued until Loren-C shut down on 31 December 1995. It had transmission power of 400 kW. The site was cleared in 2019

References

External links

* http://www.megapulse.com/chaininfo.html {{Eiði Municipality LORAN-C transmitters Buildings and structures in Eiði Municipality