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The experiments selected to be part of the UOSAT payload had several objectives which included the following: to provide the educational community with an operational scientific satellite which could be utilized with a minimal ground station; to provide the scientific community with a new source of data to aid in the understanding of the electro-magnetic properties of the near earth environment; and to provide the amateur radio community with a full complement of instruments for the study and monitoring of radio propagation conditions from the high frequency to microwave. In order to meet these objectives the following instruments comprised the UOSAT payload: a triaxial fluxgate magnetometer with a resolution of plus or minus 2 nT and maximum vector sample rate of 6.25 per s; two charged particle counters with threshold energies of 20 and 60 keV; four phase-referenced high-frequency beacons at 7, 14, 21, and 28 MHz; two microwave beacons at 2.4 and 10.47 GHz; and a CCD earth-imaging camera with 2 km resolution, and spectral response of 0.4 -1.0 micrometers. One VHF and one UHF telemetry channel provided data in standard FSK ASCII at a variety of baud rates, as well as Morse code and synthesized voice formats.

Alternate Names

  • 12888
  • OSCAR 9
  • UOSAT1

Facts in Brief

Launch Date: 1981-10-06
Launch Vehicle: Delta 2310
Launch Site: Vandenberg AFB, United States
Mass: 54 kg

Funding Agencies

  • Radio Amateur Satellite Corporation (United States)
  • University of Surrey (United Kingdom)


  • Communications
  • Space Physics
  • Engineering
  • Earth Science

Additional Information

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



NameRoleOriginal AffiliationE-mail
Mr. Richard L. DanielsProgram ManagerNASA Headquarters
Dr. Ronald A. PariseProject ScientistAMSAT
Dr. J. A. KingProgram ScientistAMSAT Corporation
Dr. M. N. SweetingProject ManagerUniversity of Surrey
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