May 24, 2025

This Week in Amateur Radio

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via HACKADAY: Artemis II Will Phone Home From the Moon Using Laser Beams

Astronauts will be testing the Orion Artemis II Optical Communications System (O2O) to transmit live, 4K ultra-high-definition video back to Earth from the Moon. The system will also support communication of images, voice, control channels, and enhanced science data.

Aboard Orion, the space terminal includes an optical module, a modem, and a control system.  The optical module features a four inch telescope on a dual gimbal mount. The modem modulates digital information onto laser beams for transmission back to Earth, and demodulates data from laser beams recieved from Earth. The control system interfaces with avionic systems aboard Orion to control and point the communications telescope.

On Earth, facilities including the Jet Propulsion Laboratory and the White Sands Complex will maintain high-bandwidth optical communication links with Orion. Information received from Orion will be relayed to mission operations, scientists, and researchers.