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TUBSAT-N/TUBSAT-N1 were two nanosatellites launched as a satellite cluster from a submarine with a Russian SS-23 military rocket in the Barents Sea. The satellites were separated in orbit via telecommand. Each contained three different experimental payloads provided by the Technical University of Berlin (TUB): reaction wheel performance, star sensor performance, and store and forward communication. The latter payload consisted of four independent communication transceivers for store and forward communication with a baud rate of 1200 and 2400 baud. Two transceivers worked in the 2m frequency band, the other two in the 70 cm frequency band with FFSK (Fask Frequency Shift Keying) modulation. An additional downlink transmitter with 9600 Baud GMSK (Gaussian Minimum Shift Keying) modulation was available.

The attitude control of TUBSAT-N consisted of two magnetic coils, a magnetometer, a reaction wheel and a star sensor. All attitude control devices were also developments of the Technical University of Berlin. Electrical power was provided by 9 NiCd-battery cells of 5 Ah (SANYO). The battery cells were connected serially and provided an unregulated bus voltage from 9 to 13 V.

It will be used from tracking medium-sized and large mammals, stolen cars and to collect data from autonomous buoys for earth environmental observation. These buoys are located in the northern Atlantic ocean near the Canary Islands.

Alternate Names

  • 25389

Facts in Brief

Launch Date: 1998-07-07
Launch Vehicle: Shtil 1
Launch Site: Russian Submarine in Barents Sea,
Mass: 8.5 kg

Funding Agency

  • Technical University of Berlin (Federal Republic of Germany)


  • Earth Science

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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