Domino or DominoEX
DominoEX is a digital mode using MFSK (Multi-Frequency Shift Keying), used to send data by
MFSK sends the data by using different tones each sent one at a time.
Each tone can carry several bits of data.
DominoEX uses new techniques to overcome the general limitations of MFSK in which the data is represented not by the frequency of each tone, but instead by the difference in frequency between sequential tones.
There are a few variations of the DominoEx protocol.
Listen to a sample of DominoEx4