6 October 1981: University of Surrey’s UoSAT-1 (UO-9) Launches on Delta 2310, Founding Modern COTS Microprocessor SmallSat Engineering
Led by Sir Martin Sweeting at Surrey, the 52 kg UoSAT-1 (UO-9) proved in 1981 that COTS microprocessors (RCA 1802 & Ferranti F100-L) could operate reliably in LEO.
Before CubeSats and PocketQubes could exist, aerospace engineering had to prove that commercial off-the-shelf (COTS) CMOS microprocessors and memory chips could operate reliably in Low Earth Orbit without multi-million-dollar military-grade radiation hardening.
Launched on 6 October 1981 from Vandenberg aboard a Delta 2310 rocket as a secondary payload alongside NASA’s Solar Mesosphere Explorer, the University of Surrey’s 52 kg UoSAT-1 (designated UoSAT-OSCAR 9 / UO-9) carried dual programmable microprocessors (an RCA CDP1802 COSMAC and a 16-bit Ferranti F100-L), a CCD Earth-imaging camera, a speech synthesizer, a triaxial fluxgate magnetometer, and a 6.5 m gravity-gradient boom.
Operating successfully for eight years until atmospheric re-entry in October 1989, UoSAT-1 established the architectural template—in-orbit software reprogramming, EDAC memory scrubbing, passive/magnetorquer attitude control, and amateur VHF/UHF packet telemetry—that every modern CubeSat and PocketQube inherits today.
CELESTRAK SATCAT & TELEMETRY RECORD
Verified Spacecraft Key Facts & Orbital Dossier
| Spacecraft | Class | Operator / Country | Launch & Vehicle | NORAD / COSPAR | Orbit & RF Downlink | Catalog Status |
|---|---|---|---|---|---|---|
FUNcube-1 (AO-73) | 1U | AMSAT-UK / AMSAT-NL GB | Dnepr · ISIPOD | NORAD 39444 2013-066AE | 145.935 MHz (VHF/UHF) | Active |
Catalogued Mission Summaries & Flight Notes
- FUNcube-1 (AO-73) (1U, 2013):
- Landmark 1U educational and amateur radio CubeSat launched on the November 2013 Dnepr cluster; carries a 1200 bps BPSK telemetry beacon on 145.935 MHz and an inverting U/V linear transponder still active after >12 years. In orbit; 145.935 MHz BPSK telemetry beacon and U/V transponder active per AMSAT-UK Data Warehouse and SatNOGS DB.