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

Great job on the decoder! Those counts of stored images from each camera (18, 14, & 17) agree with what I calculated manually from a recent packet on SatNogs last night →

https://twitter.com/scott23192/status/1628301922657619969

… however, as mentioned above, the satellite was stuck in a constant-carrier downlink. So, until that gets fixed, we have no telemetry or chance to download any of those stored images.

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XW-3 (CAS-9) already 2 months in the same condition :frowning:

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CAS-5A is active now !

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The satellite is working. I just sent to it two DTMF requests for images of the first and second. And the satellite started sending data !

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I sent a DTMF request one more time for photo1 x2 & photo2 x2

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The satellite also responds to my DTMF command *A01# …
The satellite has 3 cameras.
Access to the directory is *ABC#.
Maybe I will also try the *C01# command :slight_smile:

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According to the manual, there are a total of -60- locations for pictures to be stored (from all cameras combined). The only downlink commands mentioned are *B–# (where the slot requested is from 01 to 60).

… I would be reluctant to experiment with any undocumented commands unless you have info from the Project Team that is not in the manual.

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You’re probably right in your reluctance.
I have too much respect for you to disregard your words.

Best regards :slight_smile:

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This is the same camera but with including frame sequence numbers.

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Hello,

Attached is CAMSAT CAS-5A Amateur Radio Satellite User’s Manual V2.1, for your reference.

73!

Alan, BA1DU
CAMSAT
CAMSAT CAS-5A Amateur Radio Satellite User’s Manual V2.1.pdf (1.8 MB)

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Comparing both manuals it seems to me that this detailed section was not there

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It was not. Honestly it looks like it has been added just after request.

I am not claiming evidence :wink:

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I sent around 01:19 requesting photo number 7 x2 including frame
sequence numbers. *A07# .
I see there were some observations on satnogs.
Maybe we can put together one photo of them.

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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.

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WOW !
Who else could have solved it first :wink:

Can you explain the methodology in detail ? Apart from the photo which explains what the next bytes of information mean.

Indeed, @K4KDR What are the bytes before the image data? The usual stuff?

By the way, could you please send IQ/KISS of the dump and of the photo catalog as well ?

Good pass over Europe. IQ file. photo 7 & 9

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