850 Sligo Ave. Suite 600
Silver Spring, MD 20910
fahnen/3.jpg AMSAT - SaudiSat-OSCAR-50
Launch Pad Return
Saudi-OSCAR 50

Satellite Summary

Name: Saudi-OSCAR 50 (aka SaudiSat-1c)
NASA Catalog Number: 27607
Callsign: Broadcast: TBD; BBS: TBD
Launched: December 20, 2002
Launch vehicle: Dnepr (converted R-36N Voevoda ICBM (SS-18 Satan))
Launch location: Baikonur Cosmodrome
Weight: 10 kg
Orbit: 631 x 638 km
Inclination: 64.5 degrees
Size: Unknown
Period: 97.95 minutes


  • 145.850 MHz (67.0 Hz PL Tone)
  • 436.800 MHz
  • FM Repeater
  • Other Experiments: Unknown


SO-50 carries several experiments, including a mode J FM amateur repeater experiment operating on 145.850 MHz uplink and 436.800 MHz downlink. The repeater is available to amateurs worldwide as power permits, using a 67.0 Hertz PL tone on the uplink, for on-demand activation. SO-50 also has a 10 minute timer that must be armed before use. Transmit a 2 second carrier with a PL tone of 74.4 to arm the timer.

The repeater consists of a miniature VHF receiver with sensitivity of -124dBm, having an IF bandwidth of 15 KHz. The receive antenna is a 1/4 wave vertical mounted in the top corner of the spacecraft. The receive audio is filtered and conditioned then gated in the control electronics prior to feeding it to the 250mW UHF transmitter. The downlink antenna is a 1/4 wave mounted in the bottom corner of the spacecraft and canted at 45 degrees inward.



Thanks: Turki Al-Saud and KD4APP.

Last update July 20, 2003 - N7HPR

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