AFSK
Audio Frequency Shift Keyer/Keying (Modulation)
BCFSK
Binary Coded Frequency Shift Keying
CPFSK
Continuous Phase Frequency Shift Keying
GFSK
Gaussian Frequency Shift Keying
16QAM
16-state Quadrature Amplitude Modulation
64QAM
64-state Quadrature Amplitude Modulation
ACFM
Alternating Current Frequency Modulation
ACSK
Adaptive Code Shift Keying
ADPCM
Adaptive Delta/Differential Pulse Code Modulation/Modulator