Install multimonNG decoder

cd ~/rtl
sudo apt-get install qt4-qmake libpulse-dev libx11-dev
git clone https://github.com/EliasOenal/multimonNG.git
cd multimonNG
mkdir build
cd build
qmake ../multimon-ng.pro
make
sudo make install

 test and decode APRS packets

pi@9m2zak:~/pymultimonaprs $ rtl_fm -f 144.390M -s 22050 - | multimon-ng -a AFSK1200 -A -t raw -
Found 1 device(s):
multimon-ng  (C) 1996/1997 by Tom Sailer HB9JNX/AE4WA
             (C) 2012-2014 by Elias Oenal
available demodulators: POCSAG512 POCSAG1200 POCSAG2400 FLEX EAS UFSK1200 CLIPFSK FMSFSK AFSK1200 AFSK2400 AFSK2400_2 AFSK2400_3 HAPN4800 FSK9600 DTMF ZVEI1 ZVEI2 ZVEI3 DZVEI PZVEI EEA EIA CCIR MORSE_CW DUMPCSV SCOPE
Enabled demodulators: AFSK1200
  0:  Generic, RTL2832U, SN: 77771111153705700

Using device 0: Generic RTL2832U
Found Rafael Micro R820T tuner
Tuner gain set to automatic.
Tuned to 144643575 Hz.
Oversampling input by: 46x.
Oversampling output by: 1x.
Buffer size: 8.08ms
Exact sample rate is: 1014300.020041 Hz
Sampling at 1014300 S/s.
Output at 22050 Hz.
APRS: 9M2ZAK-9>APGJW2,WIDE1-1:>{EZTRAK}APRStracker-0.12B
APRS: 9M2ZAK-9>APGJW2,WIDE1-1:>{EZTRAK}APRStracker-0.12B
APRS: 9M2ZAK-9>APGJW2:>{EZTRAK}APRStracker-0.12B

ok sukses... 73 Zaki

#jika tidak boleh qmake ../multimon-ng.pro, gantikan dengan $ cmake ./ dan seterusnya make