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The 950 g satellite has a beacon in the 145 MHz band and a data communications transceiver in the 435 MHz band. This innovative satellite carries a 44 watt LED array to flash Morse Code messages to observers on Earth. Radio hams can reserve messages by sending signals to the satellite then observers can see the messages at the scheduled time in a flashing Morse Code LED pattern.

Alternate Names

  • 39131
  • OSSI1

Facts in Brief

Launch Date: 2013-04-19
Launch Vehicle: Soyuz-2.1a
Launch Site: Tyuratam (Baikonur Cosmodrome), Kazakhstan

Funding Agency

  • Unknown (South Korea)


  • Communications

Additional Information

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

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