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OSCAR 5 was a 43-x 30-x 15-cm rectangular prism with reflective stripping applied for temperature control. Four monopole antennae extended from the sides. The satellite carried two tracking beacon transmitters. It carried horizon sensors for determination of spin rate, and had a magnetic attitude stabilization control system. A command system was used to activate the satellite 10-m (29.450 MHz) beacon only on weekends (Friday AM to Monday AM). The seven-channel telemetry reported, by modulation of the beacon signals, the battery conditions, spacecraft temperatures, and horizon sensor responses. Several thousand transmissions were logged and formal telemetry reports received from more than 200 observers in over 25 countries.

Facts in Brief

Launch Date: 1970-01-23
Launch Vehicle: Delta
Launch Site: Vandenberg AFB, United States
Mass: 15.8 kg

Funding Agencies

  • Unknown (Australia)
  • Radio Amateur Satellite Corporation (International)
  • National Aeronautics and Space Administration (United States)


  • Communications

Additional Information

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



NameRoleOriginal AffiliationE-mail
Dr. Perry I. KleinGeneral ContactAMSAT
Mr. WiaProject ScientistUniversity of Melbourne
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