Ham radio installs

Trying to get some programs to install that not covered by Synaptic and the Software installer.

What I am trying to get is a ham radio program ATPDEC 1.7 installed from Github. It is a TAR.GZ file and is not being seen as a legitimate program for install.

Does anyone have a walk through to get this working?

Tnanks in advance

Instructions in French:
https://doc.ubuntu-fr.org/atpdec

I have no idea if it works. Good luck and 73…

Well it has compiled. Now to get it up and running.