pvachon/multimon-ng

multimon-ng a fork of multimon. It decodes the following digital transmission modes:

• POCSAG512 POCSAG1200 POCSAG2400
• FLEX
• EAS
• UFSK1200 CLIPFSK AFSK1200 AFSK2400 AFSK2400_2 AFSK2400_3
• HAPN4800
• FSK9600
• DTMF
• ZVEI1 ZVEI2 ZVEI3 DZVEI PZVEI
• EEA EIA CCIR
• MORSE CW

The following changes have been made so far:

• Fixes for x64
• Basic functionality on Mac OS X (Soundcard/OSS input is unsupported)
• DUMMY_AUDIO "backend" (Gets rid of the OSS dependency, breaks audio in doing so)
• ONLY_RAW disables the format conversion while getting rid of posix dependencies
• Option NO_X11 to disable the X11 dependency
• Brute-Force BCH implementation for POCSAG forward error correction
• Verbose mode is now listed in -h
• Continued EAS/SAME development. The decoder now works, but it should be considered "alpha" quality. Do not rely on it for the reception of emergency alerts!
• Improved portability
• Compiles on Windows (MinGW or Cygwin) without format conversion
• Windows native audio
• PulseAudio support
• Accepts raw samples as piped input
• CSV output
• FLEX decoder

In addition to the deprecated legacy Makefile there is also a file for qmake which is the preferred way of building multimon-ng. It's recommended to use qmake to generate the Makefile.

mkdir build
cd build
qmake ../multimon-ng.pro
make
sudo make install

The installation prefix can be set by passing a 'PREFIX' parameter to qmake. e.g: qmake multimon-ng.pro PREFIX=/usr/local

So far multimon-ng has been successfully built on OS X, Debian, Ubuntu, Windows and FreeBSD. (On Windows using the Qt-MinGW build environment, as well as Cygwin and VisualStudio/MSVC)

Files can be easily converted into multimon-ng's native raw format using sox. e.g: sox -t wav pocsag_short.wav -esigned-integer -b16 -r 22050 -t raw pocsag_short.raw GNURadio can also generate the format using the file sink in input mode short.

You can also "pipe" raw samples into multimon-ng using something like sox -t wav pocsag_short.wav -esigned-integer -b16 -r 22050 -t raw - | ./multimon-ng - (note the trailing dash)

Packaging

qmake multimon-ng.pro PREFIX=/usr/local
make
make install INSTALL_ROOT=/