Decoding Morse code from the first ham radio station on the moon!
"Trying to decode LEV-1" by Daniel Estévez #EA4GPZ / #M0HXM
edit: cc @destevez
https://destevez.net/2024/01/trying-to-decode-lev-1/
Post includes a GNU Radio flow graph with a decoder and a Jupyter notebook, plus a detective story on how to recognize and decode undocumented codes.
"the transmission is CQ CQ DE JS1YMG" followed by "a lot of hexadecimal data" presumably telemetry
"the signal from LEV-1 is quite peculiar"
The team of the Japanese #LEV1 Moon rover might have heard a carrier from LEV-1. We will track the Moon tonight 28 Jan. with the 25m Dwingeloo radio telescope to check. We will stream our signal (from 19:30 UTC to about 20:30 UTC) to WebSDR: http://websdr.camras.nl:8901/?tune=437410.00usb
Japanse maanlander landde op zijn neus op de Maan
Japanse heeft zojuist een foto gekregen van zijn SLIM maanlander. De foto is gemaakt door LEV-2, een van de reisgenoten van SLIM. De foto laat zien dat de maansonde op zijn neus terecht is gekomen.
https://www.kuuke.nl/japanse-maanlander-landde-op-zijn-neus-op-de-maan/
"[T]he small LEV-1 with a mass of 2.1 kg (including a 90g communication device), achieved successful direct communication with Earth from the moon. This is considered as the world's smallest and lightest case of direct data transmission from approximately 380,000 kilometers away."
To qualify as a QRP station I guess its RF power needs to be less than 5W. But I haven't found many details about the radios.
More, here: https://global.jaxa.jp/press/2024/01/20240125-2_e.html
#SLIM zundak, #Ilargia-ren gainazaletik 50m-ra motor bat galdu eta bigarren motorrak konpentsatu egin zuen, baina alboko mugimendua eta biraketa eragin zuen, eta horrek lurreratzeko angelu arraroa eragin zuen. Zorionez, #Lev1 eta #Lev2 (#SoraQ), 5 m-ra jaurti ziren.
Some more #LEV1 CW signals, decoded with @destevez's #gnuradio flowgraph, for about one hour of data. Unfortunately the raw IQ is a bit large to share (13GB), however the 5MB data for this graph (which should be decodable) is at https://data.camras.nl/slim/cw/ We'll work a bit on mass producing these files, and finding a way to share the larger files.
Toch nog niet dood: Japan kan de SLIM-lander op de Maan mogelijk heractiveren
Er zit misschien toch nog wat leven in de eerste succesvolle Japanse maanlander.
De baanbrekende ruimtesonde, genaamd SLIM (Smart Lander for Investigating Moon”), landde vrijdag 19 januari op het maanoppervlak, waarmee Japan het vijfde land
https://www.kuuke.nl/toch-nog-niet-dood-japan-kan-de-slim-lander-op-de-maan-mogelijk-heractiveren/
#japan #LEV1 #LEV2 #maan #maanlanding #MoonSniper #SLIM #SLIMlander
[Tw] RT @ISAS_JAXA: 本日1/20、#SLIM から #LEV1 が放出されたこと及びLEV1から電波の受信を確認しました。
なお、#LEV2 からの電波の受信状況（LEV2の放出状況及び動作状況を含む）については今後の解析にて確認する予定です。
[de] https://twitter.com/windymelt/status/1748419624457368061
De Japanse #maanlanding is geslaagd, en wij ontvangen prima signaal van het Maan-hoppertje LEV-1! We streamen het signaal nog even via http://websdr.camras.nl:8901/?tune=437410.00usb #jaxa #slim #lev1
[Tw] RT @amsatdl: We are receiving #LEV1 and #SLIM @ISAS_JAXA_EN in Bochum @sternwarteBO - So exciting!!!!
https://t.co/PAQmOv1KDX https://t.c…
[de] https://twitter.com/windymelt/status/1748375305570644115
