I currently have been able to produce Meteor M2 2 images, so the complete setup seems to be working now for both Meteors. It turns out the devel branch of meteor_demod has some improvements to get a more reliable lock, one of which is the possibility to specify a frequency delta -d, which is the distance from the center frequency that the demodulator will look for a carrier. Since the observations are doppler compensated and the satellite’s frequency is quite stable this delta can be set quite tight, I have set it at 1000 Hz which works nicely for me. I have updated the script on my repo with this change.
First working observation. Has a lot of black bars, but hey, it’s something.
https://network.satnogs.org/observations/1301416/#tab-data