UBAKUSAT was a Turkish nanosatellite that was developed by Istanbul Technical University. It was launched into space on board a Falcon-9 rocket in April 2018 and was deployed into its orbit from the International Space Station in May 2018. It was built as a technology demonstration and earth observation satellite to provide voice communications for amateur radio stations around the world. It carried an experimental card, TAMSAT Simplesat, which allowed scientists to test its accuracy of measuring radiation from space. It was the fifth satellite to be built by students of Istanbul Technical University.