Observation 794536: FUNCUBE-1 (39444)


#1

Regarding Observation 794536
Anyone knowing a tool for manually decoding such telemetry?


#2

I remember downloading a tool from the UK AMSAT site years ago (Funcube 1) and I think there are at least 3 decoders available for the other Funcubes. Unfortunately they are Windows based.
73 Bob vk2byf


#3

Yes, FUNcube-1 continues to operate nominally after more than 5 1/2 years in space. Decoders for FUNcube-1(AO73), Nayif-1 (EO088) and JY1Sat (JO97) can all be downloaded from https://funcubetest2.files.wordpress.com/2019/01/funcube-dashboard-summary-v2.pdf. These Dashboards also display the decoded tlm and send updates to our data warehouse http://data.amsat-uk.org/missions
Hopefully there may be some RPi code soon…
73 Graham G3VZV


#4

There’s gr-satellites has apps/ao73.py for Funcube-1.

I just tested downloading the audio from http://network.satnogs.org/observations/794536/ and sending that to ./ao73.py - had to change from UDP to TCP port 7355 then it worked (udp packets come in too fast and get dropped) - altho no frames were actually recognized :\

( run this 2nd )
$ sox -t ogg satnogs_794536_2019-07-04T06-11-26.ogg -esigned-integer -b 16 -r 48000 -t raw - | nc -v 127.0.0.1 7355

( run this 1st )
~/src/gr-satellites/apps$ ./ao73_tcp.py
Warning: the blks2.tcp_source block is deprecated.
Reed-Solomon decode OK. Bytes corrected 4, 3.
2019-07-07 22:01:26
Packet number 0
Frame type FM1
Unknown frame type. Not processing frame.
Reed-Solomon decode OK. Bytes corrected 1, 0.
2019-07-07 22:01:27
Packet number 1
Frame type FM8
Unknown frame type. Not processing frame.
Reed-Solomon decode OK. Bytes corrected 1, 0.
2019-07-07 22:01:27
Packet number 2
Frame type FM9
Unknown frame type. Not processing frame.
Reed-Solomon decode OK. Bytes corrected 0, 0.
2019-07-07 22:01:27
Packet number 3
Frame type WO3

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