inspectrum

inspectrum is a tool for analysing captured signals, primarily from software-defined radio receivers.

Try it

Prerequisites

• cmake
• fftw 3.x
• liquid-dsp
• pkg-config
• qt5

Building on Debian-based distros

sudo apt-get install qt5-default libfftw3-dev cmake pkg-config
mkdir build
cd build
cmake ..
make
sudo make install

Building on OSX - Homebrew

brew install qt5 fftw cmake pkg-config liquid-dsp
mkdir build
cd build
CMAKE_PREFIX_PATH=$(brew --prefix qt5)/lib/cmake cmake .. -DCMAKE_CXX_FLAGS:STRING=-I/usr/local/opt/qt5/include ..
make install

Building on OSX - Macports

sudo port install qt5 fftw-3-single cmake pkgconfig liquid-dsp
mkdir build
cd build
cmake ..
make
sudo make install

Run

./inspectrum

Input

inspectrum supports the following file types:

• *.cf32, *.cfile - Complex 32-bit floating point samples (GNURadio, osmocom_fft)
• *.cs16 - Complex 16-bit signed integer samples (BladeRF)
• *.cs8 - Complex 8-bit signed integer samples (HackRF)
• *.cu8 - Complex 8-bit unsigned integer samples (RTL-SDR)

If an unknown file extension is loaded, inspectrum will default to *.cf32.

Features

• Large (multi-gigabyte) file support
• Spectrogram with zoom/pan
• Plots of amplitude, frequency and IQ samples

Contact

• #inspectrum on freenode IRC