gqrx

Start Gqrx

$ gqrx

$ gqrx -c [config.conf]

$ gqrx -r

$ gqrx -e

gqrx [options]

Gqrx is an open-source software defined radio (SDR) receiver. It provides a graphical interface for receiving radio signals using RTL-SDR, HackRF, Airspy, and other SDR hardware.
The application features a waterfall display, spectrum analyzer, and various demodulation modes including AM, FM, SSB, and CW. It can record audio and I/Q data.

-c file

Configuration file.

Reset settings to defaults.

Edit configuration before start.

Qt style.

~/.config/gqrx/default.conf

Default configuration file storing frequency, gain, and demodulation settings.

- RTL-SDR dongles
- HackRF
- Airspy
- SDRplay
- USRP
- FunCube Dongle
- Any GNU Radio source

- Waterfall and spectrum displays
- AM, FM, WFM, SSB, CW demodulation
- Adjustable filters and squelch
- Audio recording
- Remote control via TCP

Requires SDR hardware. CPU usage increases with bandwidth. Some modes need specific hardware. RTL-SDR has frequency limitations.

Gqrx was created by Alexandru Csete (OZ9AEC) around 2011 as a user-friendly SDR application built on GNU Radio. It became the go-to GUI application for Linux SDR users.

rtl_sdr(1), gnuradio(1), cubicsdr(1)