The every-15-second packets on 400.500 (i.e., SatNOGS Network - Observation 12662131) are decoding as 14-packet streams of 9k6 ENDUROSAT (although check me because that framing is often a false positive).
400.500 MHz is unfortunate because there are very strong & near constant 500k LoRa packets on 400.450. So, in any given observation, don’t be surprised to see a lot of very wideband signals.
Having the sat up and alive and regarding the packets description at cevrosat.cz , can I hope someone would be so kind and produces a kaitai file from it/ and any type of Grafana then, or is it strictly up to me? The Kaitai file is out of my possibilities, for Grafana, I would like to cooperate with anyone experienced, or I would experiment myself.
The decoder is the kaitai file.
CEVROSAT-1’s digipeater works!
DL7NDR To JN48AP Via OK0CVR-7 [15:57:49]
cq
OK0CVR-8 To DL7NDR [15:58:52]
Your message will be retransmitted in 001 minutes, thank you for using Delayed Needronix Digipeater (DNxD)!
I’ve only seen the retransmission packet on the waterfall but it was too weak to be decoded (at 10° elevation).
However, CEVROSAT-1 seems to hear much better than GRBAlpha!
Congrats - that’s great news!
For the modem, were you using HS-Soundmodem, Direwolf, or what?
thats cool. maybe your are the first one that send the message
recorded in this obs
Thanks for posting that observation link. It does decode w/ Direwolf, so a 9k6 version of HS_SoundModem should work also, I would think.
If anyone would like a shortened audio file to test your software with, here is a copy:
CevroSat-1_digipeater_48k_AUDIO.zip (1.3 MB)
It’s standard FSK 9k6 with G3RUH scrambling.
So UZ7HO’s HighSpeed SoundModem and Direwolf will be good.
There are even two signals on 400.500 launched by this bandwagon.
I also had some 9k6 endorosat frames but my first guess a false positive.
Lets try to create an IQ recording and go from there, listening to the audio it could even be 2FSK.
Jan | PE0SAT
An IQ can be found at this location including a readme with some details.
in linux everyone can use this command:
sox CevroSat-1_digipeater_48k_AUDIO.wav -t raw -r 48000 -e signed-integer -b 16 -c 1 - | direwolf -r 48000 -B 9600 -D 1 -t 0 -
btw for everyone that make observation of cevrosat, but no data decoded by satnogs client, maybe you can try manual using direwolf. below is example of my observation, that failed autodecode by satnogs client but success decoded manually:
sox satnogs_12662594_2025-11-03T05-49-24.ogg -t raw -r 48000 -e signed-integer -b 16 -c 1 - | direwolf -r 48000 -B 9600 -D 1 -t 0 -Cevrosat-1 tlm beacon period changed to 60s…
I have not seen anything myself from Taurus 1/2/3/4 and a spot-check of SatNogs observations finds mostly blank waterfalls.
Has anyone heard any updates about these sats?
FYI, I’ve been monitoring all -4- freqs listed for the Taurus sats.
CEVROSAT-1 added to Digipeater Dashboard.
. Replay of recorded IQ on November 2, at ~21:00 UTC.
I don’t think these are valid frames.
