CHAYKA


Chayka is a Russian terrestrial radio navigation system, similar to Loran-C. It operates on similar frequencies around 100 kHz, and uses the same techniques of comparing both the envelope and the signal phase to accurately determine location. The systems differ primarily in details.

Chayka-Chains

Chayka, like LORAN-C, uses different pulse repetition frequencies to allow the identification of different stations operating on the same frequencies.
There are 5 Chayka chains in use:
The following Chayka transmitters work with very high power and may use very tall mast antennas. The masts at Dudinka and Taymylyr were 460 metres high.

GRI 8000

GRI 7950

#PlaceCoordinatesEmission delay, μsCoding delay, μsTransmission power, kW
MAlexandrovsk-Sakhalinsky700
W/1Petropavlovsk-Kamchatsky14506.511000700
X/2Ussuriysk33678.030000700
Y/3Tokachibuto 49104.1546000600
Z/4Okhotsk64102.056100010

GRI 5980

#PlaceCoordinatesEmission delay, μsCoding delay, μsTransmission power, kW
MPetropavlovsk-Kamchatsky700
W/1Attu Island 14506.511000400
X/2Alexandrovsk-Sakhalinsky31506.528000700

GRI 5960

#PlaceCoordinatesEmission delay, μsCoding delay, μsTransmission power, kW
MDudinka1200
W/1Taymylyr1200
X/2Pankratiev Island250
Y/3Inta1200

GRI 4970

GRI 5970