gMFSK is a multimode HF terminal program for Linux and other unix-like operating systems. Despite the name, gMFSK can send and receive many digital conversational modes typically used by radio amateurs on HF. Supported modes are: * MFSK (MFSK16 and MFSK8) * RTTY * THROB (1, 2 and 4 throbs/sec) * PSK31 (BPSK and QPSK) * PSK63 * MT63 * Feldhell