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fahnen/4.jpg UoSAT-OSCAR 22
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Satellite Summary

Name: UoSAT-OSCAR 22 aka UoSAT-5
NASA Catalog Number: 21575
Callsign: Broadcast: UOSAT5-11; BBS: UOSAT5-12
Launched: July 17, 1991
Launch vehicle: Ariane
Launch location: Kourou, French Guiana
Weight: 48.4 kg
Orbit: Polar LEO (Low Earth Orbit)
Inclination: 98 degrees
Size: 350 x 350 x 650 mm
Period: 100.24 Minutes

Digital Transponders Mode JD 9600 baud FSK (FM)

  • Uplinks:
    • 145.900 MHz
    • 145.975 MHz
  • Downlink:
    • 435.120 MHz
  • 9600 bps AX.25 protocol store-and-forward PACSAT Protocol Suite communications system.
  • Earth Imaging System (EIS)


Designed and built by the University of Surrey's Spacecraft Engineering Research Group - UoSAT in the United Kingdom.

For a description of UO-22, read John Magliacane's, KD2BD, Spotlight On: UoSAT-OSCAR-22 originally published in The AMSAT Journal.

For more information also see UoSAT & SSTL Satellite Mission Summary and UoSAT-5 Microsatellite Mission.

Here are several photos taken from UO-22 and converted to GIF format by Harold Price, NK6K.



  • Jeff Ward, "UoSAT Oscar 22 in Orbit," QST, Sep 1991, p. 70.
  • Jeff Ward, "The UO-22 Earth Imaging System," The AMSAT Journal, Vol. 14, No. 6, Nov/Dec 1991, p. 1.
  • John A. Magliacane, " Spotlight On: UoSAT-OSCAR-22," The AMSAT Journal, Vol. 15, No. 3, May/Jun 1992, p. 17.
  • Daniel, Walter, KE3HP, "Computer Processing of UO-22 and KO-23 Images," The AMSAT Journal, Vol. 16, No. 1, Jan/Feb 1993, pp. 8-10.
  • Mike Crisler, PACSAT Beginner's Guide, AMSAT.

Last update May 31, 2003 - N7HPR

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