GNOME Radio compiles and runs on Ubuntu 24.04 LTS, but not 26.04 LTS due to the missing libchamplain-gtk-0.12 package in 26.04 LTS. See https://www.gnomeradio.org/~ole/ubuntu/ for 24.04 LTS packages. If you are packaging GNOME Radio for Ubuntu and/or other GNU/Linux distributions, please coordinate this with ole@aamot.org.