And, if anyone would like this flowgraph for -live- UDP audio input from something like GQRX + output to the SatNogs uploader, I’ve added that to another copy (NOT YET TESTED) in this same folder →
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Hi Fredy!
I’m a member of the LightCube team that worked on calculating a TLE before deployment using data provided by Nanoracks. I’m pleased to say your TLE that you’ve calculated using observations perfectly matches our predicted TLE exactly when used to predict passes. This confirms that our predicted TLE is accurate. Thanks for the work you put in to calculate this!
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note my flowgraph cuts bytes 0-6
I watched something similar to NEUDOSE for about 3 minutes after the ISS. Speed is like 4k8. Interval approximately 1.5 min. I could not demodulate, a weak signal.
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Ok, ‘official’ TLEs for this deployment are out. All objects still very close to the ISS, of course.
https://celestrak.org/NORAD/elements/gp.php?GROUP=last-30-days&FORMAT=tle
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Thanks I’m copy pasting here, the TLE from space-track.org, which still need to be assigned:
0 TBA - TO BE ASSIGNED
1 56311U 98067VC 23115.52746675 .00038698 00000-0 65378-3 0 9996
2 56311 51.6322 229.4829 0008999 274.9363 149.9593 15.51184527 179
0 TBA - TO BE ASSIGNED
1 56312U 98067VD 23115.52747286 .00038654 00000-0 65371-3 0 9991
2 56312 51.6423 229.5027 0007973 264.4535 160.4044 15.51165428 201
0 TBA - TO BE ASSIGNED
1 56313U 98067VE 23115.52747270 .00005488 00000-0 10000-3 0 9993
2 56313 51.6342 229.4847 0008176 268.6907 156.1076 15.51141343 191
0 TBA - TO BE ASSIGNED
1 56314U 98067VF 23115.52767954 .00005444 00000-0 10000-3 0 9997
2 56314 51.6391 229.4934 0008603 254.6104 170.5958 15.50923664 228
0 TBA - TO BE ASSIGNED
1 56315U 98067VG 23115.52768484 .00007716 00000-0 13837-3 0 9992
2 56315 51.6440 229.5096 0008255 245.6615 179.5552 15.50936649 174
0 TBA - TO BE ASSIGNED
1 56316U 98067VH 23115.52767938 -.00000465 00000-0 00000+0 0 9995
2 56316 51.6394 229.4995 0007901 238.4564 186.6871 15.50910570 190
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A status update after space-track.org TLE sets:
| Temporary NORAD ID | Satellite | NORAD ID to follow | Other NORAD IDs | Identified | Last Update |
|---|---|---|---|---|---|
| RECEIVED AND DEMODULATED | |||||
| 99172 | NEUDOSE | 56311 | 56312, 56313 | NO | Received but not heard since 2023-04-24 18:31 - random choice of NORAD ID to follow |
| RECEIVED | |||||
| 99165 | LIGHTCUBE | 56314 | 56315, 56316 | NO | Received - Set NORAD ID to follow by using best fit, other objects fit pretty good too |
| NOT RECEIVED | |||||
| 99166 | ARKSAT-1 | 56315 | 56314, 56316 | NO | Not received - random choice of NORAD ID to follow |
| 99169 | AURORASAT | 56312 | 56311, 56313 | NO | Not received - random choice of NORAD ID to follow |
| 99167 | EX-ALTA 2 | 56316 | 56314, 56315 | NO | Not received - random choice of NORAD ID to follow |
| 99168 | YUKONSAT | 56313 | 56311, 56312 | NO | Not received - random choice of NORAD ID to follow |
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Is anyone currently receiving a LightCube beacon ? I have not received anything for several pass.
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No, nothing form LightCube nor NEUDOSE
Nothing here either FN41iq 
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Nothing here either KO33ru
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The AlbertaSat GitHub is here GitHub - AlbertaSat/ex2_ground_station_software: Ground station connection/data management software, the GNURadio flowgraph is in the repo.
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Thank you for posting the link to your repository!
Have signals been received from any of the three satellites?
Thank you!
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Best guess at this point, battery charging issue on all three sats. There is evidence that they are reaching beacon state at the end of sunlit portions of each orbit.
There is also a 30 minute timer for deployment that has not been turned off, so that has to time out before beaconing will start.
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The passes over Argentina today may yield some results. Could we have some contacts scheduled there please? I would do 4800 GFSK for that.
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Thanks for the information, can you share some information on the framing used by the satellites?
The team is working on it. There’s a few broken links on the website. Will let you know when it’s ready. In the meantime they pointed me towards the repo linked above.
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Regarding AlbertaSat cubeSats (Ex-Alta-2, AuroraSat, Yukonsat), the AlbertaSat amateur radio webpage has been updated yesterday, please take a look!
Notably, the NORAD Catalog ID assignments have been updating but some are still incorrect. Our best guess of the correct ID’s are
Ex-Alta-2 is 56313
AuroraSat is 56315 (currently 56312 and very incorrect)
YukonSat is 56316
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Thanks for the info.
I’ve also noticed that latest space-track.org TLE sets have the names of the satellites:
0 ARKSAT 1
1 56311U 98067VC 23119.18758196 .00052617 00000-0 87270-3 0 9995
2 56311 51.6393 211.3354 0007854 284.3881 75.6236 15.51574396 748
0 AURORASAT
1 56312U 98067VD 23119.18763609 .00055244 00000-0 91595-3 0 9995
2 56312 51.6392 211.3359 0007769 284.0966 75.9160 15.51563846 779
0 EX-ALTA-2
1 56313U 98067VE 23119.18769378 .00054682 00000-0 90751-3 0 9993
2 56313 51.6393 211.3362 0007715 283.6237 76.3893 15.51541663 762
0 LIGHTCUBE
1 56314U 98067VF 23119.12384466 .00059553 00000-0 99300-3 0 9990
2 56314 51.6390 211.6593 0007757 266.9261 93.0841 15.51373083 786
0 NEUDOSE
1 56315U 98067VG 23118.54419711 .00042131 00000-0 71098-3 0 9996
2 56315 51.6387 214.5374 0007973 263.1030 96.9053 15.51186325 648
0 YUKONSAT
1 56316U 98067VH 23118.54421730 .00048733 00000-0 82002-3 0 9992
2 56316 51.6387 214.5375 0007828 262.8353 97.1747 15.51203157 661
I’m really curious how the identification took place. @rjbarakat @lmberkhout @lskabelu @VE6IMU @VA6ISS @ve6cnk-Charles any idea?
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