TiungSat-1: Launched 2000

Payloads
Digital Store & Forward Communications 
The subsystem provided global, frequency-agile, communications for any form of digitized data: e-mail, voice-mail, scientific data exchange, fax, imagery, or even Internet mail for remote regions. The low cost and direct access offered by the TiungSat-1 microsatellite in orbit also made it ideal for use by scientists, engineers and students based in institutes, universities and even schools throughout the world.

DSPE (Digital Signal Processing Experiment)
The DSPE consisted of a TM320C31 low power DSP suitable for special or general purpose signal processing tasks on LEO satellites. The VHF scanner operated in the 140-150 MHz range. A built-in FSK decoder is used. The system was capable to detect signals from a pre-set signal strength threshold within selected bar. DSP could be used for processing audio transmission for rebroadcast.

CEDEX (Cosmic Ray Energy Deposition Experiment) 
The objective of CEDEX was to characterize the TiungSat-1 orbit radiation environment in terms of the observed particle LET (Linear Energy Transfer) spectrum at the spacecraft.

Experimental Microsatellite GPS, an SSTL/ESA collaboration. 
An advanced 12-channel GPS receiver with two GPS patch antennas was installed for several objectives: