High Quality Content by WIKIPEDIA articles! UO-11 (aka UoSAT-OSCAR 11, UoSAT-2 or UoSAT-B) is an amateur satellite built at the University of Surrey and launched into orbit on 1 March 1984. It remains orbital and active, though unstable with irregular periods of transmission. The satellite was last heard on 4 March 2010, twenty-six years after launch. It transmits a beacon at 145.826MHz, with inactive beacons at 435.025MHz and 2401.5MHz. It is operated by Surrey Satellite Technology Ltd, who also build UoSATs.

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