This is my control panel, but what about the sound?
Here is an audio signal presented to your speaker. The message is the usual “5NN BK” as you see.
Notice that you hear a pure sine wave with no background noise.
The array self.s contains the FFTed IQ signal, and the self.audio_data is a 700Hz sine wave.
So, you don’t like it because you love QRMs, QRNs and everything that is related to ionospheric propagation?