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Also called PO-28 or Oscar 28


Designation 22829 / 93061G
Launch date 25 Sep 1993
Country of origin Portugal
Operator Consorcio Po-SAT of the LNETI (Laboratorio Nacional de Engenhario e Technologia Industrial)
Mission Telecommunications
Perigee/Apogee 787/803 km
Inclination 98.7°
Period 100.8 min
Launch vehicle Ariane V59
Mass at launch 45.5 kg

First Portuguese satellite. Built by Surrey's University. Is very similar to Kitsat B with a GPS reception system.

External resources


sat-index articles

Technical data


Prime contractor SSTL (Surrey Satellite Technology Ltd.)
Platform SSTL
Mass at launch 50.5 kg
Mass in orbit  
Length 352 mm
Width 356 mm
Height 670 mm
Stabilization gravity gradient
DC power  
Design lifetime 5 years

Transponder frequency chart (MHz)

Downlink freq. Transponder/Beacon Mode
145.975   JD 9600 bps FSK (Primary)
145.925   JD 9600 bps FSK (Secondary)

Uplink freq. Transponder/Beacon Mode
435.075   JD 9600 bps FSK (Primary)
435.050   JD 9600 bps FSK (Secondary)

Can be switched to downlink at 429.950 MHz

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