The main purpose of FreeDV is HF or Short Wave communications.
Limiting the transmitted bandwidth to around 1KHz.
And, the FreeDV app does the whole process. SSB input to voice and back.
HF signals bounce around the ionosphere and there are multiple reflections making the
signal vary enormously. Thus the data error rate is awful but a human can ignore the
errors and communication is successful.
If you want to combine Voice and Data, take a look at the M17 project, a VHF/UHF project.
You did not mention your radio manufacturer nor the frequencies it uses.
So, please mention that, in particular the frequencies and mode it uses.
On Mon, 29 Aug 2022 19:41:00 -0700 (PDT), Naveed Ahmad Chughtai