gqrx

Software defined radio receiver

TLDR

Start Gqrx

$ gqrx

Start with specific config

$ gqrx -c [config.conf]

Reset settings

$ gqrx -r

Edit settings before start

$ gqrx -e

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.

PARAMETERS

-c file

Configuration file.

-r, --reset

Reset settings to defaults.

-e, --edit

Edit configuration before start.

-s style

Qt style.

CONFIGURATION

~/.config/gqrx/default.conf

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

SUPPORTED HARDWARE

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

FEATURES

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

CAVEATS

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

HISTORY

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.