UoSAT-5: Launched 1991

UoSAT-5 was launched on the second ARIANE (40) ASAP on mission V44 on the 17th July 1991 alongside three other secondary payloads ORBCOMM-X, SARA and TUBSAT-1, and main payload the European Space Agency's ERS-1. 

UoSAT-5 carried a digital Store and Forward communications and Earth Imaging payload, which were enhanced versions of the UoSAT-4 payloads. The spacecraft operated in the amateur satellite communications service providing a research test bed for new and efficient LEO protocols.