Oh man it was my mistake, I stupidly used stereo mix with the HS_soundmodem… VB cable!
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Have a look at Block Diagram | Amateur Radio – PEØSAT you can connect via AGW or Kiss port another application that will show the HEX data.
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The image format is not yet described! I have made a decoder available that presents the image data encoded in a Base64 string. If someone is interested on how to use this or if I should simply add a panel inside the dashboard, just let me know. There’s probably a packet counter included in the header.
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Can you please share? I’m interested in comparing 
This with gr_satellites will also work:
name: SHARJAHSAT-1.yml
norad: 55032
data:
&tlm Telemetry:
telemetry: ax25
transmitters:
9k6 FSK downlink:
frequency: 437.165e+6
modulation: FSK
baudrate: 9600
framing: AX.25 G3RUH
data:
- *tlm
gr_satellites SHARJAHSAT-1.yml --samp_rate 48e3 --audio --hex if you redirect the observation audio.
***** VERBOSE PDU DEBUG PRINT ******
((transmitter . 9k6 FSK downlink))
pdu length = 272 bytes
pdu vector contents =
0000: 82 6c 64 aa 9e a6 e0 82 6c 60 aa 9e a6 61 03 f0
0010: 45 53 45 52 41 f6 e5 00 00 00 70 0f 6a b1 a9 db
0020: 5c 08 c6 e6 25 45 6d 73 13 3a d3 4a 49 32 c0 fc
0030: d5 b8 9f e8 d1 f4 a6 c6 b4 36 b4 c2 25 8f 71 ac
0040: fd 76 fd 23 52 17 ef 56 7f 68 d9 fc 27 0b ad 6a
0050: b2 84 c0 3b 6b 93 bd 49 e7 02 59 0e fa ea 8e 87
0060: 9f 3d 49 6c a2 de 87 8f 61 54 b5 0b 7f 25 c8 53
0070: ba ab a8 3f 84 cb 91 33 8c d3 4d 86 cc 35 59 8e
0080: e0 50 c8 dd ea da e7 6f 3d a9 0c 64 7c cc 37 54
0090: 7a cd c2 a8 09 18 a0 1f c0 7e 97 b1 82 e3 54 fb
00a0: 16 cf 91 23 c9 ac 4f 16 e9 29 3b 5b c6 06 d8 cf
00b0: a5 79 0a 36 5c c7 5a ad 29 4b 92 5d 8a 96 92 db
00c0: e9 f3 2d 8a 0f 9d 85 74 7b 6e 2e 6e 23 40 7f 72
00d0: 98 cd 44 bb 9d 8d c6 de 86 d2 60 0c 03 9c 53 66
00e0: ff 00 56 6b 47 3f 73 94 f0 a9 df eb 1a 9e 7d e2
00f0: 0b a6 47 11 a9 fb c7 b5 64 ca cb 18 1c f3 53 1d
0100: 8f 76 5b 94 0c f2 43 3e 7a 83 5a 16 d0 7d a1 c1
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I believe it could be possible to get an image if we just will combine packets received from one station without 26 bytes header. At least thats how i got previous two images
The header has some reasonable value, IIRC. And, as I already said, there’s a decoder available (this is a decoder for information decoding, it needs the demodulated frames).
I’ll try to share an example on how to use SatNOGS-decoders for this today!
Here is a panel in the grafana dashboard for SharjahSat-1 that shows all received image data in the selected time range.
https://dashboard.satnogs.org/d/HqCRmvA4z/sharjahsat-1?viewPanel=55&orgId=1
I don’t have enough time to hack a sweet little script to extract the images right now, but this should be a shoot for someone playing around with the geoscan script. Maybe @SA2KNG himself could give it a try.
A big benefit of using the decoder for this: there indeed is a packet counter, so re-arranging the data packets into the correct order and removing doubles should be really easy.
Extracting the original binary data from this Base64 encoded strings is also pretty easy. In a command line one could just use
python -m base64 -d <<< "/9j/4AAQSkZJRgABAQEAAAAAAAD/2wBDAAQDAwQDAwQEAwQFBAQFBgoHBgYGBgwJCQcKDw0PDw4NDg4QEhcUEBEWEQ4OFBsUFhgZGhoaEBMcHhwZHhcZGhn/2wBDAQQFBQYFBgwHBwwZEQ4RGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRkZGRn/xAAfAAABBQEBAQEBAQAAAAAAAAAAAQIDBAUGBwgJCgv/xAC1EAACAQMDAgQDBQUEBAAAAX0BAgMABBEFEiExQQYTUWEHInEUMoGRoQgjQrHBFVLR8CQz" >> image.bin
Doing this in the right order with all packets that belong to a single image should produce a file called image.bin. Of course someone needs to find the image format after this, but there are also tools available.
Let me know if I can throw some more hints on that!
HTH,
Patrick
Here is an image I was able to get out of SatNOGS Network - Observation 7109702 and SatNOGS Network - Observation 7106883
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Sweet! Awesome work!
WOW. How did you do it ?
I manually downloaded every data packet from 7109702. Found missing packets looking at offset in the header and took them from 7106883.
Then ran a script which takes off first 26 bytes from every file. Then I combined them
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Yeah, ok! As I described above: you can see which packets are missing if you look into those 26 “ignored” bytes 
Polling DB for the last week’s data should output some more images, maybe for the last month, too!
Header can be found here:
In case of image data, it is found here:
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Now please add your decoder on github 
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Does someone recognize this area?
Yes, it’s coming. I need to iron out a few things first, tonight or tomorrow in some working condition 
Main question is how red terrain actually is? 
Snowy, mountain land. It looks something like North USA, or maybe somewhere in Asia