[ENSO] Near reentry and last beacon game

[auk]

Hello,

According to CSUM team (See X post), ENSO will enter atmosphere in a few days and they’re making a last decoded beacon competition .

[EU1SAT]

ENSO Image

2025-10-27 10:30:27 UTC.
El 9°, Alt. ~301 km according current TLE. QRM.
339 Frames uploaded.
Decay prediction November 9

[dl7ndr]

Hi Vlad,

How do you decoded the packets to an image?

[EU1SAT]

I decoded manually.
I didn’t find any publicly available decoders.

[dl7ndr]

Could you describe how you decoded the packets to an image?

[EU1SAT]

You just need to cut off all unnecessary (service information) and you will get a sculpture

This process takes me more than 30 minutes, it will take me several hours to describe in detail.
Unfortunately, I don’t have that kind of time right now, but if you will insist, I’ll try to find the time the day after tomorrow.

The excess is highlighted in red and it starts with “PLO0000”.

[auk]

The beacon periodicity has been changed from 30s to 10s.

SatNOGS Network - Observation 12652152

[dvdiyen]

[bali]

@EU1SAT

if you will insist, I’ll try to find the time the day after tomorrow.

waiting the tutorial.. thank you!

is it possible to capture the image from this observations, or should use the iq raw file?:

SatNOGS Network - Observations

[EU1SAT]

@bali

is it possible to capture the image from this observations, or should use the iq raw file?

There are no images. ENSO transmits images only over France.

[EU1SAT]

@bali

waiting the tutorial..

For decoding I used:

1. My *.KSS File from GetKISS+ (DK3WN)
2. kiss_csv.py from @SA2KNG :
   GitHub - kng/geoscan-tools: Process frames from satellite Geoscan-Edelveis
3. FAR (File and Archive Manager)
4. HxD HEX Editor.

Please read:

RamSat mission progress

Glad to help! First, please let me say that two things are required to produce an image. #1, you need a capture that starts at the exact beginning of a file & ends at the exact end of a file. #2, you need to have ALL of the packets (in the correct order) with none missing. Of course, neither of these things will happen ‘live’ in a single capture ( by one station alone ) unless you are extremely lucky! So, before using my script (or any tool) to convert the decoded packets to a JPG image fi…

Jielong-3 - CAMSAT CAS-5A - 2022-12-09 06:35 UTC

With decodes from -2- passes received mostly by N6RFM plus some from my own location, a 100% complete JPG image (#6) was assembled! Unfortunate that it’s not one of the ‘nice’ pictures, but it was great to use the sequence numbers to put together a JPG with no missing packets. [cas5a-6] [2-SatNogs-packets-function-codes]

Sharjahsat-1 images decoding

Hi, I did look at the new frames and my old code again, it doesn’t handle several different images so the input file need to be filtered accordingly. I did manage to get almost the full image as seen above. However, I think the image transmission format is a bit hard to implement, especially from DB. First off, the counter goes down so addressing with this becomes inverted. Second, even if most frames are 246B long, the last two frames (0 and 1) are not full length, which means you cannot use …

After careful reading, you will see that the information I posted above is enough to manually decode the image.

Huge thanks to @K4KDR and @SA2KNG for the information and programs.

[bali]

@EU1SAT

After careful reading, you will see that the information I posted above is enough to manually decode the image.

thank you. i will try

[EU1SAT]

Do not forget that the source file must contain FFD8FF (JPEG file header), otherwise decoding does not make sense.

[bali]

@EU1SAT

source file must contain FFD8FF (JPEG file header)

OK. noted

[alpha_adhito]

Hello, I captured a several ENSO telemetries from the SatNOGS station/ manually. Is there any link where I can found the decoder? I see everyone was using High-Speed Soundmodem Ver. 0.02b with FSK AX.25 9600bd but I can’t find the HS Soundmodem with that version.

Thanks

[dl7ndr]

High-Speed SoundModem for FSK without G3RUH

I’m using gr_satellites.

[auk]

CSUM team published a frame decoder 1 year ago:

GitHub - CSUMontpellier/CSUM-GS: Set of scripts to encode and decode radio packets...

The documentation for 1U:

1U Decoder — CSUM GS Modules documentation

[fredy]

One TLE update:

ENSO
1 58470U 23185J   25307.37931202  .00000000  00000-0  13644-2 0    00
2 58470  97.3446  29.9877 0007750 264.0936 220.5540 16.05643807    08

enso_307_v1.dat (1.3 KB)
sites.txt (11.6 KB)

[alpha_adhito]

Thank you very much! Finally I’m able to decode the ENSO beacon

Sorry, but another issue that I run, any idea why I can’t select ENSO on GetKISS? I add ENSO’s TLE line on amateur.txt file and it always get this error (there are also another satellites sent that error message on GetKISS too)

[EU1SAT]

Have you added the SoundModem path to the “sat_app.ini” file?
Also check path to your TLE file in “conf.ini” file.