Aang23
@aang23.satdump.org
230 followers 190 following 110 posts
A random 21yo interested in satellites and other stuff :-) Probably mostly known as SatDump's author. http://ko-fi.com/aang23
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aang23.satdump.org
MetOp-SG-A1 ( @eumetsat.int ) is now transmitting some data from its MWS and 3MI instruments!

Received by @redplanet00.bsky.social.

3MI can be in color, however automating the process will take a bit of time. Support will be pushed to SatDump very soon.
Reposted by Aang23
lego11.bsky.social
Come già anticipato nel post del NOAA-15 (RIP), adesso anche i satelliti USA futuri sono stati praticamente tutti annullati o lobotomizzati. Ricordo che attualmente nessun satellite USA copre l'orbita delle 08 (ex NOAA 15) e il successore JPSS-3 è previsto... nel 2032!!!
bsky.app/profile/afre...
afreedma.bsky.social
SCOOP: Trump administration slashes scope of next-generation US weather satellites, eliminating air quality and ocean observing sensors. (1/3)
aang23.satdump.org
And further on - LRD, a replacement for the L-Band HRPT older generations provided, was cut later on following further budget cuts a few years ago.

Those are also the reason NOAA-20 is using the same experimental bus as Suomi NPP, which has several design issues...
aang23.satdump.org
This decision followed a wide change of policy at EUMETSAT where they began slowly becoming a lot more closed than they used to be.

As of now, only the Russian METEORs operate LRPT, and people will have to rely on that now.
aang23.satdump.org
A little before, MetOp-A had also launched with plans to operate a compatible LRPT service, but after some technical issues it was disabled - and due to a "lack of users" (on a service that did not exist yet...) - they decided to scrap it on future ones.
aang23.satdump.org
It was initially planned to be on the new generation - as a new digital mode named "LRPT" instead of APT. However, that was back with the NPOESS program that had a much larger scope than the current JPSS program.

NPOESS got drastic budget cuts, and LRPT went with it.
aang23.satdump.org
Received in Vienna with @r1chae.bsky.social.
aang23.satdump.org
NOAA-15 was decommissioned today at 15:26 UTC, with its AVHRR/3 Instrument still in better state than the last 2 remaining on MetOp-B & C.

It wouldn't be so disappointing if this wasn't done for the wrong reasons... Makes you wonder what happened to NOAA.
aang23.satdump.org
As of now there is only VCID 8/9 present, that is instrument and spacecraft telemetry, previously on S-Band which now looks quite empty.
aang23.satdump.org
Receiving @eumetsat.int's MetOp-SG A1's X-Band Direct Broadcast.

It is 93.3M QPSK (Huge... Bigger DB yet). 1/2, RS 223 I=4 otherwise with both convolutional vectors swapped. All as expected...

Now we just need to wait for EUMETSAT (or well, @esa.int for now) to turn stuff on! :-)
lego11.bsky.social
First reception of Metop-SG A1 at my station with @aang23.satdump.org
and his Aaronia Spectran V6!
Signal strength about the same as JPSS-2, but without nulls. About 10-11 dB on a 33° pass for my 1.2 meter Andrew dish.
Signal is filler and telemetry only now, no instrument data yet.
aang23.satdump.org
Unfortunately no L-Band though... But it should be rather nice on X-Band. Just a bit too wide for many.
aang23.satdump.org
That article is quite a bit off though... And sensitive stuff is already encrypted.
aang23.satdump.org
Une autre raison était que c'était jugé militaire il n'y a pas si longtemps que ça...

En passant - je suis habitué à travailler avec des données d'à peu près tout les missions EO (et autres), comme je m'amuse à decoder directement les données depuis le lien radio, c'est pour ça :-)
aang23.satdump.org
Même en saturant volontairement il n'y a rien malheureusement.

Après tout - ce n'est pas très utile dans la majorité des cas comparé à de l'IR.
aang23.satdump.org
Non, ils ne peuvent pas. Le visible n'est pas du tout assez sensible. À part des instruments dédiés rien ne le fait. Pour l'instant c'est uniquement VIIRS, OLS et MERSI-LL. Bientôt sur MetOp-SG également.

Même sur des données brutes ce n'est pas possible.
aang23.satdump.org
Par contre l'image choisie est une peu dommage : Aucune mission de l'ESA n'a de DNB capable de fournier ce genre d'images de nuit.

C'est donc certainement du DMSP (OLS) ou JPSS (VIIRS)...
aang23.satdump.org
Pas le premier problème du genre sur ces bus ALTAIR. Ça me rappelle les LeoStar-2. 3 satellites quelques mois l'un après l'autre en panne pour la même raison. L'un d'eux transmet encore (reçu cette nuit sur ma station) mais impossible à exploiter.
aang23.satdump.org
Sauf quand la station sol plante... Ce qui est assez régulier en ce moment.
aang23.satdump.org
Just got the news that the US Navy will *not* be stopping distribution of DMSP data in the end!

As of now it's planned to keep SSMIS data distribution until September 2026.
Reposted by Aang23
Reposted by Aang23
glynmoody.bsky.social
Radio geeks reveal how to access crucial hurricane data after US Department of Defense cut it off - www.theregister.com/2025/07/21/s... "Hams for the win: Amateur-built decoder taps SSMIS satellite data amid NOAA cutoff" #trump
Radio geeks say you can still get 'lost' DoD hurricane data
: Hams for the win: Amateur-built decoder taps SSMIS satellite data amid NOAA cutoff
www.theregister.com
Reposted by Aang23
lego11.bsky.social
Il nostro (mio e di @aang23.satdump.org ) lavoro di decodifica di SSMIS, strumento essenziale per rilevare e caratterizzare gli uragani, ma interrotto per motivi politici, ha attirato l'attenzione del Register che ha dedicato un articolo al nostro #SatDump!
www.theregister.com/2025/07/21/s...
Radio geeks say you can still get 'lost' DoD hurricane data
: Hams for the win: Amateur-built decoder taps SSMIS satellite data amid NOAA cutoff
www.theregister.com
aang23.satdump.org
Ça arrive! :-)
Reposted by Aang23
aang23.satdump.org
Demodulating MTG-I1 raw data @ 26Ghz received in Panska Ves. It is 188M OQPSK 1/2 and RS I=5.

Unfortunately, it is encrapted. It's very disappointing considering it's supposed to be public life-saving data...

S-Band is not encrypted.