SONATE-2 from Space Technology Uni Würzburg is now operating as an AX.25 simplex Digipeater on 145.825 MHz.
To work this satellite you can use Greencube Terminal from OZ9AAR and the normal Soundmodem for AX.25 1200 bd.
I find it hard to get in to the satellite but as you see in the featured image in this post it is possible.
Anyway – nice to have one more amateur radio satellite.
More info at:
https://www.informatik.uni-wuerzburg.de/en/space-technology/projects/active/sonate-2/information-for-radio-amateurs/#c1137755