CHAYKA
Overview
 
Chayka is a Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n terrestrial radio navigation
Radio navigation
Radio navigation or radionavigation is the application of radio frequencies to determine a position on the Earth. Like radiolocation, it is a type of radiodetermination.The basic principles are measurements from/to electric beacons, especially...

 system, similar to LORAN-C. It is also run on 100 kHz and is described like LORAN-C by its GRI.
There are 5 Chayka-chains in use:
  • GRI 8000 — Western (European) Russia Chayka Chain (1969, RSDN-3/10)
  • GRI 7950 — Eastern Russia Chayka Chain (1986, RSDN-4)
  • GRI 5980 — Russian-American Chayka Chain (1995)
  • GRI 5960 — Northern Chayka Chain (1996, RSDN-5)
  • GRI 4970 — North-Western Chayka Chain
  • And also North-Caucasian, South-Ural (GRI 5970), Siberia
    Siberia
    Siberia is an extensive region constituting almost all of Northern Asia. Comprising the central and eastern portion of the Russian Federation, it was part of the Soviet Union from its beginning, as its predecessor states, the Tsardom of Russia and the Russian Empire, conquered it during the 16th...

    n, Angarsk
    Angarsk
    Angarsk is a city in Irkutsk Oblast, Russia, situated on the Angara River, from Moscow. It serves as the administrative center of Angarsky District, although it is not administratively a part of it. Population:...

    , Sayansk
    Sayansk
    Sayansk is a town in Irkutsk Oblast, Russia, located on the Oka River northwest of Irkutsk. Population: Sayansk was founded in 1970. It was granted urban-type settlement status in 1975 and then town status in 1985....

    , Transbaikal
    Transbaikal
    Transbaikal, Trans-Baikal, Transbaikalia , or Dauria is a mountainous region to the east of or "beyond" Lake Baikal in Russia. The alternative name, Dauria, is derived from the ethnonym of the Daur people. It stretches for almost 1000 km from north to south from the Patomskoye Plateau and North...

    ian, Far East chains deployed on the basis of low-power mobile stations RSDN-10.

The following Chayka-transmitters work with very high power and may use as similar LORAN-C-transmitters very tall mast antennas.
 
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