I have released GNOME Radio 16, new generation Radio app for GNOME 42.
https://wiki.gnome.org/Apps/Radio
However, there is no description of it in GNOME Software on Fedora Core 36.
https://download.gnome.org/sources/gnome-radio/16.0/gnome-radio-16.0.43.tar.xz
GNOME Software needs to be updated to display information about GNOME Radio 16 for this to be implemented properly.
https://gitlab.gnome.org/ole/gnome-radio/-/raw/main/gnome-radio.doap
https://gitlab.gnome.org/ole/gnome-radio/-/raw/main/data/gnome-radio.appdata.xml.in
You can use Gingerblue 6.0.1 to record audio from GNOME Radio with a built-in laptop microphone, but it remains to be implement recording from GNOME Radio in lossless quality.
See http://planet.nuug.no/ and https://blogs.gnome.org/oleaamot/2022/05/28/gnome-radio/ for link to the RPMS for Fedora Core 36.
You’ll find the code in https://gitlab.gnome.org/ole/gnome-radio/
I urged a move of the code to https://gitlab.gnome.org/GNOME/gnome-radio however it was voted down.
GNOME Radio 16.0.43 runs smoothly on Fedora Core 36 under GNOME 42.