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fahnen/13.jpg Amateur Satellite Summary - FO-20
Launch Pad Return
Fuji-OSCAR-29

Satellite Summary

Name: Fuji-OSCAR-29 aka Fuji-3 and JAS-2
Callsign: 8J1JCS
NASA Catalog Number: 24278
Launched: August 17, 1996
Launch vehicle: Japanese H-II No. 4
Launch location: Tanegashima Space Center of NASDA, Tanegashima Island, Japan
Weight: 50 kg
Orbit: Polar LEO (Low Earth Orbit)
Inclination:
Size: 44 cm wide x 47 cm high
Period:

Features:

  • BBS Message System (digital store-and-forward)
  • Analog Communications Transponder
  • Attitude Control
  • Digi-Talker
  • Testing of newly developed solar cells in space
Beacon (100 milliWatt) Telemetry Format
  • 435.795 MHz - CW (12 wpm)
  • 435.910 MHz - PSK digital - Digi-Talker
Digital Transponder - Mode JD (1 Watt)
  • Uplinks: AFSK (FM) 1200 bps, AX.25, Manchester Encoded
    • 145.850 MHz
    • 145.870 MHz (the only 9600 bps uplink frequency)
    • 145.890 MHz
    • 145.910 MHz
  • Downlink: BPSK 1200 bps or FSK 9600 bps
    • 435.910 MHz (also Digi-Talker frequency)
Analog Transponder - Mode JA (1 Watt)
  • Uplink: 145.900 - 146.000 MHz
  • Downlink: 435.800 - 435.900 MHz (inverted)

Description

For more information about FO-20 and 29 visit the Japan Amateur Radio League ( English version) and the National Space Development Agency of Japan ( English version) web pages.

Mineo Wakita, JE9PEL, has FO-29 satellite telemetry analysis programs.  The software will automatically analyze all digital telemetry from the satellite such as current, voltage, and temperature.  The software is available from http://www.ne.jp/asahi/hamradio/je9pel/.

Mike Gilchrist, KF4FDJ, has written a Digi-Talker Question and Answer page.

See also Satellite Summary - Fuji-OSCAR 20.


References

  • Steve Ford, WB8IMY, "JAS-2 In Orbit!,"QST, Oct. 1996, p. 94.
  • Fujio Yamashita, JS1UKR and Hideo Ono, JA1BU, "JAS-2 Comes to Life as FO-29,"The AMSAT Journal, Vol. 19, No. 5, Sep/Aug 1996, p. 1.

Last update February 9, 2002 - N7HPR


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