LinPSK is a PSK31 program based on WinPSK 1.0 Main features are: * support for BPSK, QPSK, MFSK16 and RTTY * simultaneuos decoding of up to four channels. * mixed digital signal reception * trigger channels on receiving a predefined ASCII string patterns * log each channel to a file * support for user defined macros * scalable display of signal as frequency spectrum or waterfall