This code generates a .wav file which emulates a fully-populated FT8 band!

Usage

This .wav file can then be played with rpitx on actual air (well on a dummy load) for receiver testing purposes.

FT8 Full-Band Demo 1

FT8 Full-Band Demo 2

rm mixed.wav; sox -m *.wav mixed.wav

sox mixed.wav -r 48000 sampleaudio.wav

Now play sampleaudio.wav using rpitx.

Testing

I have tested rpitx on Raspberry Pi Zero 2W TX'ing @ 14.074 MHz.

References