Our New Satellite is getting launched in less than 12 hours. Sorry for posting a bit late, we were occupied with launch-related procedures here. We are kindly requesting you all in tracking and receiving our satellite from space.
Thanks to a sample audio file provided by the Project Team, I was able to determine the non-standard FSK tones produced by this satellite’s SX1268 module. For anyone using Direwolf, a CONF file including the following ‘MODEM’ line will work:
Finally, please keep in mind that the Direwolf & gr-satellites settings above may have to be adjusted once we start receiving live, over-the-air downlinks. Due to the conditions that you’re all aware of, it’s certainly possible that the FSK downlink that we receive from orbit might differ slightly from the test file created on the bench. FSK from these SX1268 modules has been very tricky to work with historically, at least in my experience with that hardware.
Since the SX1268 module actually produces FSK, there is an excellent chance that the sample audio file was produced using USB demodulation.
So, while the ‘AFSK’ parameters that I’ve provided might produce a valid decode (if the downlink is USB demodulated), technically it’s not the correct way to handle these signals. Once the over-the-air downlinks can be observed by everyone, I’m sure a consensus can be formed on how to best handle them.
(I had just wanted to share what I knew so far with the Community as quickly as possible)
Well, after every part of the launch working perfectly, at the last micro-second before deployment of the primary satellite plus AzaadiSAT, they lost telemetry. So, in the event that they get no additional data from the launch vehicle, it could come down to this community determining whether or not AzaadiSat is alive or not. Fingers crossed!
" AzaadiSAT was launched on Small Satellite Launch Vehicle’s maiden flight SSLV-D1 at 03:48 UTC / 09:18 IST on 7 August 2022, but failed to reach the intended orbit. Due to the final VTM stage failure, the stage as well as the two satellite payloads were injected into an unstable elliptical orbit measuring 356km x 76km and subsequently destroyed upon reentry."