Thanks , This helps
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HADES-R TLE Update
It is still a challenge to match the Doppler.
HADES-R
1 98710U 25009BY 25028.51731307 .00000000 00000-0 -14212-2 0 01
2 98710 97.4429 111.1393 0003354 352.9277 130.1251 15.16618103 06
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A slight update on AlAinSat-1:
The modulation is: GMSK 4800 (AX100 ASM+Golay) mode 5
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Hi @laith_me do you have any updated TLE?
INNOCUBE TLE Update
INNOCUBE
1 98709U 25029.51021302 .00000000 00000-0 10880-2 0 07
2 98709 97.4389 111.8970 0007295 359.8410 120.3287 15.16514154 01
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Hi Jan:
In the last pass some minutes ago, with no “experiment superlong frame”, your last Hades-R TLEs matches quite well. The issue is when the pass has a superlong frame. In that kind of passes is very difficult to make a proper doppler correction
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Hi David,
I checked the current TLE against one or more of those passes and came to the same conclusion, it isn’t perfect but can support the mission.
All the best,
Jan PE0SAT
Dear SatNOGS Community,
We are currently experiencing difficulties in communicating with our satellites, Skylink-1 and Skylink-2. The TLE data we have for these satellites is now outdated, making it challenging to establish reliable tracking.
To improve the situation, we would greatly appreciate any assistance in identifying signals that might correspond to these satellites. If any signals can be correlated with them, updating the TLE data accordingly would be extremely helpful.
Here are the database links with details on the satellites:
Skylink-1
Skylink-2
If anyone can help track potential signals or suggest methods to refine their orbital parameters, we would be very grateful. Any observations, suggestions, or insights would be highly valued.
Thank you in advance for your support!
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Very happy to start looking for your signals.
I see the modulation listed as ‘9600’… can you provide any additional information as to the framing or encoding of your downlink signal?
Also, do you have a sample audio or I/Q file that we can use to confirm our decoding software? It’s very helpful to KNOW that you have a working configuration when hunting for the actual signals.
Thank you!
I passed the request to listen for Skylink-1/2 to Bob, N6RFM. He setup his Texas location for the pass tonight around 0453utc (31-Jan-2025) and based his observations on the TLE:
1 98657U 25009BY 25021.90669764 .00000000 00000-0 -14212-2 0 04
2 98657 97.4429 104.2661 0003354 352.9277 63.3351 15.17186318 04
… strong signals were seen that, on replay, decoded as:
**[9k6 ENDUROSAT]**
======
000: 3f da a7 a6 fd f7 37 5c 7e 7c 9c 47 2b 8f 6e be ?.....7\~|.G+.n.
010: 77 2e 34 f9 46 f3 55 b8 fb fd 83 e6 d7 46 fe 6b w.4.F.U......F.k
020: e5 d3 1b aa d8 ee 6a 19 da 33 1d ba 7f cf a9 ed ......j..3......
030: 27 bf 81 83 5f ab 2e 25 df 33 a1 bb 4f 6a 8e e7 '..._..%.3..Oj..
======
======
000: ef d8 0d da 5f 69 37 e1 6a 5b 7e 65 d5 5c bf f8 ...._i7.j[~e.\..
010: 9f ef e7 ed 7e 38 be 23 7d 5f 4a 43 fa f6 71 af ....~8.#}_JC..q.
020: d9 f7 f7 82 4f f7 ef 44 6d f8 bf fd 0f 1e f3 a0 ....O..Dm.......
030: db ca 78 fd c4 ea f3 f0 27 ff b0 df ed e8 90 fc ..x.....'.......
040: 5e ea b9 1c dd 6f a9 bc e7 87 33 6d 24 d9 b1 4f ^....o....3m$..O
050: be 72 bb 5d bf 6b 97 06 73 ef 76 6d 9f 51 e7 e3 .r.].k..s.vm.Q..
060: 7b 49 b3 ec f0 73 ad 1d 8f 6e 3e b4 ca 5f fa 77 {I...s...n>.._.w
070: dd 88 db 21 ef 6f 97 f3 ad 32 de 5d 63 f5 de 1a ...!.o...2.]c...
080: 8e fa 5f 00 00 00 00 00 00 00 00 00 00 00 00 00 .._.............
090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
======
======
000: b8 2a 70 73 0f 9f 75 a5 04 27 37 7f ab 60 f4 e0 .*ps..u..'7..`..
010: 9f 42 8e fd 5f fb 2d a4 fd 81 bb e3 e2 56 3b 26 .B.._.-......V;&
020: 8f 6f ff 73 4b dd fb 41 99 6f df d8 43 09 db 10 .o.sK..A.o..C...
030: fe 5c 71 cf a7 c6 d1 b1 fe 8f 3d b8 df f7 85 2b .\q.......=....+
040: 8f e4 ad ef 6c f0 7c 3f ff 21 cf c3 0f 71 fd ba ....l.|?.!...q..
050: f7 91 2f d5 7c c0 38 d6 8b ee bf d3 47 d6 6d 7d ../.|.8.....G.m}
060: fe b7 33 71 9b 79 6e 5d a2 e9 fd 15 04 ff ff ad ..3q.yn]........
070: 19 fd 88 7d 75 fe ea 15 7c c1 97 7f cf 68 57 13 ...}u...|....hW.
080: 9c f0 f6 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
090: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0b0: 00 00 00 00 00 00 00 00 00 .........
======
… do those 3 frames look like payloads that would be expected from the SKYLINKs?
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Hello, as the operator of Connecta satellites, I would like to share new TLE sets.
CONNECTA IOT-5
1 88412U 25009CQ 25030.53484443 +.00002221 00000-0 +22581-3 0 00229
2 88412 97.7440 112.8228 0001445 323.1231 36.9888 14.91778770002330
CONNECTA IOT-6
1 88419U 25009CQ 25030.46189111 +.00003687 00000-0 +36578-3 0 00231
2 88419 97.7488 112.7663 0001997 69.3507 290.7926 14.92368131002338
CONNECTA IOT-7
1 88424U 25009CQ 25030.66117503 +.00002122 00000-0 +21213-3 0 00272
2 88424 97.7497 112.9658 0002995 76.3682 283.7870 14.92513572002343
CONNECTA IOT-8
1 88404U 25009CQ 25030.67188927 +.00002117 00000-0 +21700-3 0 00207
2 88404 97.7500 112.9527 0001917 216.8556 143.2531 14.91501428002356
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The TLE with changed to temporary NORAD ID we use in DB:
CONNECTA IOT-5
1 98700U 25009CQ 25030.53484443 +.00002221 00000-0 +22581-3 0 00220
2 98700 97.7440 112.8228 0001445 323.1231 36.9888 14.91778770002331
CONNECTA IOT-6
1 98701U 25009CQ 25030.46189111 +.00003687 00000-0 +36578-3 0 00236
2 98701 97.7488 112.7663 0001997 69.3507 290.7926 14.92368131002333
CONNECTA IOT-7
1 98702U 25009CQ 25030.66117503 +.00002122 00000-0 +21213-3 0 00272
2 98702 97.7497 112.9658 0002995 76.3682 283.7870 14.92513572002343
CONNECTA IOT-8
1 98703U 25009CQ 25030.67188927 +.00002117 00000-0 +21700-3 0 00200
2 98703 97.7500 112.9527 0001917 216.8556 143.2531 14.91501428002359
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Hi again,
Thank you so much for your prompt response and for your effort in helping us locate the signals! We greatly appreciate your support.
@K4KDR Regarding the IQ file, you can find it at the following link:
IQ File
Unfortunately, after reviewing the decoded frames, the payload does not match the expected format for Skylink-1 and Skylink-2 signals.
We’ll continue our search and share any additional information as it becomes available. Your assistance is invaluable, and we thank you again for your time and effort!
Best regards
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HADES-R TLE Update
HADES-R
1 98710U 25009BY 25031.48664413 .00000000 00000-0 -14212-2 0 04
2 98710 97.4429 113.9537 0003354 352.9277 133.4275 15.17540173 00
3 Likes
Thank you very much for the Skylink I/Q file!
I was only able to decode a single frame - and even then one-time only… I must have been right on the edge of the correct settings.
Can you confirm if the framing is indeed ENDUROSAT?
How many valid frames are contained in this I/Q sample file?
And finally, do you know the FM deviation in use by your transmitter?
Thanks!
------
000: d0 7e 0b 2a 74 8d eb 53 0a 89 66 6b 27 c1 c7 48 .~.*t..S..fk'..H
010: 4b 8c 5c d4 5a ab 3e c3 c0 c8 10 8e 1f 86 da f6 K.\.Z.>.........
020: 55 34 4b 73 5e 4d 42 6b 81 4c 5f 9a dc 84 28 62 U4Ks^MBk.L_...(b
030: ef 23 2c 18 c8 5c 99 0e e8 d4 3f 72 42 3c fb 0e .#,..\....?rB<..
040: 64 c6 58 6d 2e 3e cc d7 10 d9 a6 f2 5e 24 b9 ac d.Xm.>......^$..
050: 7d 66 11 d1 8f 8c 88 60 fb f8 30 85 d8 7a 56 23 }f.....`..0..zV#
060: 82 b4 66 3f 77 55 43 3c d8 6a 1b 9f 82 48 be c1 ..f?wUC<.j...H..
070: e6 06 b0 93 77 5e 0f 2a 97 24 7e 6b 29 d4 c1 03 ....w^.*.$~k)...
080: 39 35 29 3c d2 7f 00 00 50 45 52 46 43 4f 55 4e 95)<....PERFCOUN
090: 54 45 52 53 5f 4f 4e 00 00 00 00 00 00 00 00 00 TERS_ON.........
0a0: 10 d5 01 40 d2 7f 00 00 61 00 00 00 00 00 00 00 ...@....a.......
0b0: 70 ef 00 3c d2 7f 00 00 f0 f3 00 3c d2 7f 00 00 p..<.......<....
0c0: 20 00 00 00 00 00 00 00 24 00 00 00 00 00 00 00 .......$.......
0d0: 10 .
------
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One detail on endurosat, I have looked at a bunch of frames earlier and some use the first as length. Looking at the frame above, this seems to match as d0 is the length and first byte.
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Hi Brian,
Do you the latest TLE for Elevation-1
73, Nitin VU2JEK
We seem to have an unknown satellite on 437.780 that is part of the T12 launch (the reason it seems to match PARUS-T1)
If more information is available on this unknown satellite, please share it.
3 Likes
Faintest of faint Skylink signal 1555utc (02-Feb-2025) approx 1-minute ahead of the 98657 TLE. (Eastern U.S.)
1 98657U 25009BY 25021.90669764 .00000000 00000-0 -14212-2 0 04
2 98657 97.4429 104.2661 0003354 352.9277 63.3351 15.17186318 04
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Could you please share the IQ file? PARUS-T1 Team will try to decode it later…