Gqrx supports many of the SDR hardware available, including Airspy, Funcube Dongles, rtl-sdr, HackRF and USRP devices. See supported devices for a complete list.
Gqrx is free software, licensed under the GNU General Public license allowing anyone to fix and modify it for their use.
The latest stable version of Gqrx is 2.6, it is available for Linux, FreeBSD, Mac and even the Raspberry Pi, offering the following features:
- Discover devices attached to the computer.
- Process I/Q data from the supported devices.
- Change frequency, gain and apply various corrections (frequency, I/Q balance).
- AM, SSB, CW, FM-N and FM-W (mono and stereo) demodulators.
- Special FM mode for NOAA APT.
- Variable band pass filter.
- AGC, squelch and noise blankers.
- FFT plot and waterfall.
- Record and playback audio to / from WAV file.
- Record and playback raw baseband data.
- Spectrum analyzer mode where all signal processing is disabled.
- Basic remote control through TCP connection.
- Streaming audio output over UDP.