I got WINE setup to run the software for RadTel. I had to install Mono for Windows inside WINE to make the RadTel CPS and Flasher work: https://askubuntu.com/a/992215 I also got serial going: https://gitlab.winehq.org/wine/wine/-/wikis/Wine-User%27s-Guide#serial-and-parallel-ports
The APRS support on the RadTel RT-880G still seems a bit broken, though. I keep seeing a stray character in the path: “WIDE1_-1” Setting the path in CPS software had the same problem. Setting the path to " WIDE1" makes it show OK in packets.