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fahnen/3.jpg Amateur Satellite Summary - FO-20
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Fuji-OSCAR-20

Satellite Summary

Name: Fuji-OSCAR-20 aka JAS-1b and Fuji-2
Callsign: 8J1JBS
NASA Catalog Number:20480
Launched: February 7, 1990
Launch vehicle: Japanese H-I
Launch location: Tanegashima Space Center of NASDA, Tanegashima Island, Japan
Weight: 50 kg
Orbit: Polar LEO (Low Earth Orbit)
Inclination: 99 degrees
Size: 44 cm wide x 47 cm high
Period: 112 minutes

Features:

  • BBS Message System (digital store-and-forward)
  • Analog communications transponder
Beacon
  • 435.795 MHz - CW (primary) or PSK digital (secondary)
  • 435.910 MHz - PSK digital
Digital Transponder - Mode JD
  • Uplinks: AFSK (FM) 1200 bps, AX.25, Manchester
    • 145.850 MHz
    • 145.870 MHz
    • 145.890 MHz
    • 145.910 MHz
  • Downlink: BPSK 1200 bps
    • 435.910 MHz
Analog Transponder - Mode JA --Note: FO-20 is permanently in the analog mode.
  • Uplink: 145.900 - 146.000 MHz
  • Downlink: 435.795 - 435.900 MHz (inverted)

Description

For an update on the status of FO-20, see the JARL Present Status of Fuji-OSCAR 20 web page.

For a description of FO-20, read John Magliacane's, KD2BD, Spotlight On: Fuji-2/OSCAR-20 originally published in The AMSAT Journal.

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.

See also Satellite Summary - Fuji-OSCAR 29.


References

  • JAS-1 Handbook, JARL, August 1985. English translation available from Project OSCAR, PO Box 1136, Los Altos, CA 94023.
  • V. Riportella, "Introducing Japanese Amateur Satellite number One (JAS-1),"QST, Nov 1986, pp 66-67.
  • "Introduction of JAS-1b," by JARL,QEX, Sep 1989, pp 8-11.
  • Joe Kasser, "The Fuji-OSCAR-20 Spacecraft,"The AMSAT Journal, Vol. 13, No. 3, July 1990, p. 7
  • JR1NVU, "The Telemetry Formats of JAS-1b/Fuji-OSCAR 20,"The AMSAT Journal, Vol. 13, No. 4, Sep 1990, p. 20.
  • John A. Magliacane, "Spotlight On: Fuji-2/OSCAR-20" The AMSAT Journal, Vol. 15 No. 5, Nov/Dec 1992, p. 17.
  • Martin Davidoff, The Satellite Experimenter's Handbook, 2nd edition, The American Radio Relay League, Newington, CT., 1990.
  • Mike Crisler, PACSAT Beginner's Guide, AMSAT

Last update May 31, 2003 - N7HPR


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