Mystery Satellite Nr. 2 revealed

This satellite is a GEO-IK satellite, also known as Musson. Satellites of this type were all launched by Tsiklon-3 from
Plesetsk. The picture comes from a publicity brochure for the Plesetsk cosmodrome. The numeric code for this spacecraft is 11F666 and it is designed by NPO PM in Krasnoyarsk and built by AKO Polyot in Omsk, the builders of Tsikada, Nadezhda and Glonass satellites.

Expert satellite spotters were:

Gunter Krebs, John Nolan, Geoffrey Richards, Stefan Wotzlaw

Musson satellites have been launched since 1981:
 
Satellite Launch date
Cosmos 1312  30. 9.81 
Cosmos 1410 29. 9.82
Cosmos 1510 24.10.83
Cosmos 1589 8. 8.84
Cosmos 1660 14. 6.85
Cosmos 1732 11. 2.86 
Cosmos 1803 2.12.86
Cosmos 1823 20. 2.87
Cosmos 1950 30. 5.88
Cosmos 2037 28. 8.89 
Cosmos 2088 30. 7.90 
Cosmos 2226 22.12.92
Geo-IK 1 29.11.94

The orbit of these satellites is 1490-1505 km at 82.6 degrees or 1480-1526 km at  73.6 degrees inclination.
These satellites transmit broadband PCM-FM signals on 150.3 MHz and a CW carrier on 400.8 MHz.

In ITU circulars from the early 90's a GEO-IK-2 was mentioned. It was supposed to use an orbit at 99.4 degrees inclination at 1000-1200 km altitude and having the following transmitters on board:

We still have not seen any signs of this new satellite.


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