The gqrx tool is an open source software-defined radio (SDR) receiver powered by the GNU radio and the Qt graphical toolkit.
It has many features such as:
- Discovering devices connected to a computer
- Processing I/Q data
- AM, SSB, CW, FM-N, and FM-W (mono and stereo) demodulators
- Recording and playing back audio to/from WAV file
- Recording and playing back raw baseband data
- Streaming audio output over UDP
In this recipe, we will cover basics of gqrx and another tool, RTLSDR.