Uosat 3

Also called UO-14 or Oscar 14

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General

Designation	20437 / 90005B
Launch date	22 Jan 1990
Country of origin	United Kingdom
Mission	Telecommunications
Perigee/Apogee	781/797 km
Inclination	98.6°
Period	100.7 min
Launch vehicle	Ariane V35

Function: Packet Radio Mailbox and Digipeater

Since 1992 it is used by VITA (see also Gemstar)

The onboard computer failed in late 1996. It was reactivated for a few weeks for its 10th anniversary in single channel FM voice repeater mode, uplink is 145.975, and downlink is 435.070 MHz.

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End of life

Out of service	Aug 2003
Cause	Some battery cells are dead and there is not enough power to operate
Decay

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External resources

sat-index articles

Technical data

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Specifications

Prime contractor	University of Surrey (UK)
Platform	UoSAT (modular)
Mass at launch	46 kg
Dimension	0.6 x 0.34 x 0.34 m
Stabilization	3 axis
DC power	EOL: 10 W
Design lifetime	3 years

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Frequency chart

Uplink	9600 bps K9NG/G3RUH modulated FSK (FM) AX.25 145.975 MHz
Downlink	9600 bps K9NG/G3RUH modulated FSK (FM) AX.25 435.070 MHz
Beacon	1200 bps AFSK NBFM 435.070 MHz

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