Usage

$ kvak --helpUsage: kvak [OPTION...]pi/4-DQPSK multi-channel demodulator  -b, --bind=ADDR            Bind to ADDR:PORT  -c, --chunk-size=CHUNK     Chunk size  -f, --fifo                 Explicitly create output FIFOs instead of files  -i, --input=INPUT          Input file path      --loop                 Loop the input file  -m, --muted                Start all channels muted  -n, --nchannels=NCHANNELS  Number of channels  -o, --output=OUTPUT        Output file paths (use %d for channel number                             substitution)  -v, --verbose              Enable verbose debugging  -?, --help                 Give this help list      --usage                Give a short usage message  -V, --version              Print program versionMandatory or optional arguments to long options are also mandatory or optionalfor any corresponding short options.Report bugs to Josef Gajdusek <atx@atx.name>.

Usual invocation

$ rtl_sdr -f 425400e3 -s 1.8e6 -g 42 -p 37 - | ./fcl -b localhost -p 3333 -n 72 -s 50 -f "./fir.py 1.8e6 18.5e3 1151 rcos" -c 26,14,64,15,4,50,25,37,39,60,21,28,52,56,10,61,20,5,38,53 -t 1 -i U8 -o /tmp/fcl1.ch

$ kvak -i /tmp/fcl1.ch -o /tmp/tetra.1.%d.bits -n 20 --fifo

$ tetra-rx /tmp/tetra.1.18.bits

Control

$ kvakctl -s 127.0.0.1:6677 tui

Building and installing

$ mkdir build$ cd build/$ cmake ..$ make$ sudo make install

# apt install debhelper lsb-release cmake build-essential capnproto libcapnp-dev python3-numpy# dpkg-buildpackage -uc -us

Documentation