Photo of Fuji-OSCAR 29

Fuji-OSCAR 29
(JAS 2)

Spacecraft Summary

OSCAR Designation:  Fuji-OSCAR 29     Oscar Number:  FO-29    
International Designator:  1996-046B     Norad Number:  24278    
Common Name:  JAS 2     Satellite Type:  Satellite    
Launch Date:  17 August, 1996     Launch Location:  Tanegashima Space Center    
Launch Vehicle:  H-II No. 4     Apogee:  1323.00    
Perigee:  800.00     Inclination:  98.54    
Period:  106.44     Dimensions:  44 x 47 polyhedron    
Weight:  50.000 Kg    
Organization: Japan Amateur Radio League

Frequency Information
Mode V/U (J) Linear Transponder (Inverting): Non-Operational
Uplink: 145.9000 - 146.0000 MHz SSB/CW
Downlink 435.8000 - 435.9000 MHz SSB/CW
Mode V/U (J) PacSat BBS: Non-Operational
Uplink: 145.8000 MHz BPSK 1200 BPS
Uplink: 145.8700 MHz BPSK 1200 BPS
Uplink: 145.9100 MHz BPSK 1200 BPS
Downlink 435.9100 MHz FSK 9600 BPS
Mode U Beacon: Non-Operational
Downlink 435.7950 MHz CW
Mode U Digitalker (Rarely Used): Unknown
Downlink 435.9100 MHz FM

Current Keplerian Elements

1 24278U 96046B   11325.42309139  .00000044  00000-0  81781-4 0  7143
2 24278  98.5687  88.5511 0350209 209.7777 148.3018 13.52970646753726

Weekly Satellite Report

October 2011: FO-29 is reported to be currently inoperative due to eclipse length and battery condition. Return to service is unknown.


Please send reception reports to lab2 'at'
Please use the subject line: 'FO-29 reception report'.

Mineo, JE9PEL, has an FO-29 satellite telemetry analysis program that will automatically analyze all digital telemetry from the satellite (such as current, voltage and temperature). FO29CWTE is available at:

Detailed Description

FO-29 carries a 100KHz wide SSB/CW linear transponder that operates in mode V/U. It additionally carries a 1k2/9k6 digital BBS that is no longer operational and a Digitalker beacon that transmits a digital voice on FM.

FO-29 includes an attitude control system that consists consists of a sun-sensor, geomagnetism sensor, magnetorquer and data processor. It also features an advanced solar cell experiment consisting of gallium-arsenide solar cells 2cm x 2cm and 2cm x 1cm cells.



Mission subsystem (communication subsystem)

JAS-2 operates in mode J, that is, 145MHz band for uplink and 435MHz band for downlink.
  1. Analog transponder (linear transponder) for phone and CW. Total transmitting power is 1W, of which beacon is 100 mW.
  2. Digital transponder (store-and-forward packet processor) bit rate 1200 or 9600 bps, alternative operation for 1200 bps, uplink in Manchester coded FM / downlink in bi-phase PSK for 9600 bps, FSK after G3RUH, both uplink and downlink. Total transmitting power is 1 W.
  3. Digi-talker transmits information by voice, audible with a hand-held transceiver. Source information data in PCM is sent to JAS-2 from the control station.
  4. Data processor, consisting of the CPU V50, static RAMs of 2MB, deals with BBS, digi-talker, telemetry and command data processing and self-operating jobs.

Bus subsystem

  1. Size and structure
    44 cm wide and 47cm high, sphere-like polyhedron consisting of 26 panels,weighs 50 kg.
  2. Power supply
    Gallium-Arsenide solar cells of 2cm x 2cm and 2cm x 1cm pieces, and 11 cells of Nickel-Cadmium storage battery of 6 AH.
  3. Attitude control
    This consists of sun-sensor, geomagnetism sensor, electric magnet or magnetorquer and data processor.
    The axis of symmetry of JAS-2 becomes the spin axis, and operating attitude will be in so-called "wheel mode", that is the spin axis being perpendicular to the orbit plane.

Reference Documents:


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