Chinese launch 2024-12-27T01:03:07 - LJ-1 (Y6) - JSLC, LC43/130

Launch description based on information shared on forum.nasaspaceflight.com

Atongmu Jiqiren (Atom Robot), the cargo is composed of eleven satellites.

One of the satellites interesting for Ham radio operators, it is CASAA-SAT.

Part of the description given on the following page.

We plan to expand communications with interested Radio amateurs who will be able, whatever their origin on the globe (IARU link), to send a TC and obtain the response in return.

For example, we will be able to send back the last image of the poles, and hopefully of an aurora borealis, if the energy on board is sufficient. If the energy risks being faulty, we can always send back the state of the satellite (temperature, voltage, etc.).

And thanks to this opening, we will be able to cover more regions of the world and better control and exploit our Nanosatellite.

It is hoped that the launch of the satellite and the associated media coverage will also make it possible to strengthen the already existing links with Radio Amateurs and to create a local Radio Club, within which Marseille enthusiasts will be able to meet and exploit CASAA-Sat, which will offer it Ground Station redundancy.

In a short time, software that manages TCs and TMs will be available here to be downloaded, installed on a PC and ready to be used, from anywhere in the world, to communicate with CASAA-Sat.

AMATEUR UHF
98712 CASAA-SAT 436.500 MHz IARU Coordinated Directly

If more information becomes available, it will be added to this post.

Sources:

amsat-fr and LAM

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The following gr-satellites yaml file can be used to decode CASAA-SAT.

I have tested it with a recording (ax25_test_pattern) shared by Amsat-fr

cat CASAA-SAT.yml

name: CASAA-SAT
norad: 98712
data:
  &tlm Telemetry:
    telemetry: ax25
transmitters:
  9k6 BPSK downlink:
    frequency: 436.500e+6
    modulation: BPSK
    baudrate: 9600
    framing: AX.25 G3RUH
    data:
    - *tlm
-> Packet from 9k6 BPSK downlink
Container: 
    header = Container: 
        addresses = ListContainer: 
            Container: 
                callsign = u'AMULAM' (total 6)
                ssid = Container: 
                    ch = True
                    ssid = 1
                    extension = False
            Container: 
                callsign = u'CASAA' (total 5)
                ssid = Container: 
                    ch = False
                    ssid = 1
                    extension = True
        control = 0x03
        pid = 0xF0
    info = b'\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xab\xcd\xef\x01#Eg\x89\xfe\xdc\xba\x98vT2\x10\xaa\xbb\xcc\xdd\xee\xff\x99\x88wfU' (total 235)
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Here is a TLE calculated from gathered info, thanks to @PE0SAT for his help on generate this set:

CASAA-Sat
1 98712U          24362.05285880  .00000000  00000-0  50000-4 0    02
2 98712  97.4637  27.2171 0000072 173.5024 357.7341 15.12691638    08
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AOS 04:10 UTC, NOTHING HEARD Over Minsk

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Unfortunately the launch failed:

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