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W2LJ QRP - When you care to send the very least!

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A new kind of Project Diana

Posted: 10 Dec 2021 12:26 PM PST http://w2lj.blogspot.com/2021/12/a-new-kind-of-project-diana.html?utm_source=feedburner&utm_medium=email


From the ARRL:
World’s Smallest Moon Lander from Japan will Put Ham Radio Transmitter on
the Moon
12/09/2021
Japan’s OMOTENASHI, the world’s smallest moon lander, will have an X-band and UHF communication system, although it will not carry an amateur band transponder. OMOTENASHI is a 6U CubeSat set for launch via a NASA SLS
rocket as early as February 2022. It will have a mission period of from 4
to 5 days. The name is an acronym for Outstanding Moon Exploration
Technologies demonstrated by Nano Semi-Hard Impactor. Wataru Torii of the
Japan Aerospace Exploration Agency (JAXA) Ham Radio Club, JQ1ZVI, said
radio amateurs can play a role in gathering data from the spacecraft.
The spacecraft is made up of two separable components, both having
independent communication systems — an orbiting module and a surface probe. The orbiting module will take the surface probe to the moon. It will
transmit beacon or digital telemetry data on UHF (437.31 MHz). The surface probe — the moon lander — will transmit digital telemetry or three-axis acceleration analog-wave with FM modulation on UHF (437.41 MHz).
Transmitter power will be 1 W in both cases.
“If we succeed in receiving the UHF signal from the surface probe, we could know the acceleration data on the impact on the moon and the success of the landing sequence,” Torii explained.
“We already have a station for uplink and downlink at Wakayama in Japan — used as an EME [moonbounce] station. However, if the satellite is invisible from Japan, we cannot receive the downlink signal. So, we need a lot of
help from ham radio stations worldwide.” Torii noted that the RF system on the lander only operates on UHF.
The orbiting module beacon will transmit on 437.31 MHz using PSK31. The
surface probe beacon will transmit on 437.41 MHz using FM, PSK31, and PCM-PSK/PM. -----------------------------------------------------------------------------------------
72 de Larry W2LJ
QRP - When you care to send the very least!

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