mingw32-inspectrum from home:mnhauke:mingw:win32:sdr project
Select Your Operating System
Add repository and install manually
For 15.3 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:mnhauke:mingw:win32:sdr/15.3/home:mnhauke:mingw:win32:sdr.repo zypper refresh zypper install mingw32-inspectrum