Building multimon-ng from source and capture FMSFSK-signals

I noticed that the kali linux 2.0 repository version of multimon-ng does not include the FMSFSK demodulation option.

FMSFSK demodulation in multimon-ng is used to demodulate German Funkmeldesystem-signals.

To get the complete multimon-ng version, first install its dependencies:


apt-get install qt4-qmake  libpulse-dev  cmake  libx11-dev  pulseaudio


Then clone and build multimon-ng from source:

git clone https://github.com/EliasOenal/multimonNG.git

cd multimonNG

mkdir build && cd build

qmake ../multimon-ng.pro

make && make install

ldconfig



Then connect the rtlsdr-dongle to the computer and hook it up to a decent antenna.

The rtlsdr-dongle's ppm-value should also be identified via tools such as kalibrate for more reliable results.

When an appropriate frequency is found, pipe the sound from rtl_fm to multimon-ng for demodulation:


rtl_fm -f 431.865e6 -p -2 -l 100 | multimon-ng -a FMSFSK -a AFSK1200 -t raw /dev/stdin