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slowrx

Slowrx is an SSTV decoder for Linux.

Created by Oona Räisänen (OH2EIQ [at] sral.fi).

http://windytan.github.io/slowrx/

Features

Support for a multitude of modes (see modespec.c for a list)
Detect frequency-shifted signals – no need to fine-tune the radio
Automatic slant correction, also manual adjustments are simple
Adaptive noise reduction
Decode digital FSK ID
Save received pictures as PNG
Written in C99

Requirements

Linux
Alsa (libasound2-dev)
Gtk+ 3.4 (libgtk-3-dev)
FFTW 3 (libfftw3-dev)

And, obviously:

shortwave radio with SSB
computer with sound card
means of getting sound from radio to sound card

Compiling

make

Running

./slowrx