Article on LED Optical Morse Code Spacecraft ShindaiSat

Illustration of high-gain and low-gain LED illumination scenario at the ground station – Image credit Shinshu University

An English language article about ShindaiSat is available at https://directory.eoportal.org/web/eoportal/satellite-missions/s/shindaisat

ShindaiSat is a 20 kg spacecraft approx 300 by 300 by 350 mm which is planning to use bright LEDs for Space to Earth optical communication using Morse code. It also carries an optical lens system for receiving modulated LED light from the ground station.

There will be an AX.25 packet radio telemetry beacon and a low power CW beacon. Downlink frequencies of 437.305 and 437.485 MHz have been coordinated by the IARU Amateur Satellite Frequency Coordination Panel.

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(Source: AMSAT-UK)