https://www.sigidwiki.com/wiki/Unknown_MFSK_on_12916kHz
Chinese-64 MFSK - Signal Identification Wiki
Chinese Modem MFSK-64
chinesemfsksignalidentificationwiki
https://www.mathworks.com/help/phased/ref/mfskwaveform.html
MFSK Waveform - Multiple frequency shift keying (MFSK) continuous waveform - Simulink
The MFSK Waveform block generates a multiple frequency-shift keying (MFSK) continuous waveform with a specified step time, sweep bandwidth, frequency offset,...
mfskwaveformmultiplefrequencyshift