teikyosat-4 infomation

External view of TeikyoSat-4

This image shows the FM of TeikyoSat-4 (nicknamed "Ooruri"). FM is an abbreviation for flight model, which refers to "The model that actually flies in orbit.


Mission of TeikyoSat-4

The mission of this satellite is to observe the effects of microgravity on a cellular slime mold called the "Dictyostelium discoideum" and to send the data down to the ground.

Inside this black structure is a "mission module" to maintain atmospheric pressure and an environment conducive to the survival of slime molds in space to observe the Dictyostelium discoideum fungus.



Spacecraft Specifications:

Name TeikyoSat-4(Ooruri)
Size 455mm×455mm×450mm
Mass  52kg
Orbit Sun-Synchronous Orbit About altitude : 560㎞ / Inclination : 97.6 deg / Period : 96min
Mission 1.Establishment of Bus System able to Multipurpose Space Environment Utilization Satellite.
  2.Demonstration on High Frequency Communication of amateur radio bands on the orbit.
  3.Demonstration on Life Science Field Mission in an orbit.

Call Sign:

Satellite Station TeikyoSat-4(Ooruri) JS1YHH
 Ground Station Teikyo University Ground Station JS1YHI 

TeikyoSat-4 Communication Specification:

TeikyoSat-4 uses the amateur radio band.

Frequency Band Uplink Downlink
VHF/UHF 145MHz Band 437.45MHz 
UHF/SHF 1200MHz Band 5831.00MHz
Type Modulation  Protocol
Beacon CW  N/A
FM Packet(VHF/UHF) 1k2-AFSK/9k6-GMSK/SSTV  AX.25/Scottie1
FM(SHF) 115k2-2FSK  ※

Following the technology of Fukuoka Institute of Technology FITSAT-1 mission.

Tanaka et al., "Microsatellite FITSAT-1" Niwaka "and wireless system", RF World, No. 22 , CQ Publishing, April 2013.
Tanaka et al . , "Development and operation of microsatellite FITSAT-1 (Niwaka)" , UNISEC Takumi Journal , Vol. 4, No. 1, pp. 1-25, 2013.


TLM_Format (PDF) (Getting Ready)

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