UoSAT-1


UoSAT-1, also known as UoSAT-OSCAR 9 , was a British amateur radio satellite which orbited Earth. It was built at the University of Surrey and launched into low Earth orbit on 6 October 1981. It exceeded its anticipated two-year orbital lifespan by six years, having received signals on 13 October 1989, before re-entering the atmosphere.
This was the first of several UoSAT satellites; followed by UoSAT-2.

Mission

Like its successor UoSAT-2 it carried a CCD camera and a Digitalker speech synthesiser, and transmitted telemetry data on a 145.826 MHz beacon at 1200 baud using asynchronous AFSK.
The Astrid package sold by British firm MM Microwave, consisting of a fixed frequency VHF receiver set and software for the BBC Micro, could display the telemetry frames from either UoSAT-1 or UoSAT-2.
UoSAT-1's solar arrays were of an experimental design reused for UoSAT-2.

Computers and Data Processing

The primary computer for the satellite was the RCA 1802 microprocessor. A secondary microprocessor was also employed, the "F100L". Memory was 16K of DRAM.