1.Are all NOAA satellites being decommissioned? Does this mean there won't be anymore operational APT transmitting satellites?
2.What resources can I use to track these satellites and get a few good IQ recordings in before they stop transmitting on Aug 19?
3.Are there any other satellite image transmission signals we can still decode as hobbyists?
1.All NOAA-POES (the legacy variants) are getting decommissioned. Only the newer ones (NOAA-20, -21 etc) are in use, but those only transmit much higher data rates in frequency bands that are not that easily receivable (but still are) as a hobbyist. They now mostly all transitioning to transfer their data in the X-Band (7.5 GHz to 8.5 GHz). Also they have much higher data rates than APT, which of course increases the image quality and resolution.
2.To track them, use some satellite tracking Software like GPredict or lISS Detector Pro for Android.
3.Yes there are, in the VHF-range (137 MHz) the digital LRPT signal (basically improved digital APT) from the METEOR Satellites M2-3 and M2-4. For other Satellites, please read this article:
https://www.a-centauri.com/articoli/beyond-poes-amateur-satellite-reception
