Gqrx is an open source software defined radio receiver (SDR) powered by the GNU Radio and the Qt graphical toolkit.
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.
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.
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Recent Releases
2.17.605 Dec 2024 01:45
minor feature:
lt;ul gt;.
lt;li gt;New: Fetch RDS Program Service amp;amp; RadioText via remote control. lt;/li gt;.
lt;li gt;New: Set and query audio mute via remote control. lt;/li gt;.
lt;li gt;New: DMG release for ARM-based Macs. lt;/li gt;.
lt;li gt;Improved: Save I/Q recording format to settings. lt;/li gt;.
lt;li gt;Improved: Reduced CPU utilization of plot and waterfall display. lt;/li gt;.
lt;li gt;Improved: Display and formatting of RDS data. lt;/li gt;.
lt;li gt;: Decoding of RDS flags. lt;/li gt;.
lt;li gt;: Incorrect channel filter offset, for some devices. lt;/li gt;.
lt;li gt;Changed: x86 DMG release requires macOS 13.7 or later. lt;/li gt;.
lt;/ul gt;.
2.17.519 Apr 2024 11:45
minor feature:
lt;ul gt;.
lt;li gt;New: PlutoSDR and LimeSDR support in AppImage release, via SoapySDR. lt;/li gt;.
lt;li gt;New: Airspy support in Windows binary release. lt;/li gt;.
lt;li gt;Improved: Updated GNU Radio, SDR driver, and Qt versions in AppImage release. lt;/li gt;.
lt;li gt;: Respond correctly to pipelined remote control commands. lt;/li gt;.
lt;li gt;: Limit UDP packet size to 1024, for compatibility with netcat. lt;/li gt;.
lt;li gt;Removed: FreeSRP support in AppImage release. lt;/li gt;.
lt;/ul gt;.
2.17.410 Feb 2024 02:12
minor feature:
New: Experimental Windows binary release (RTL-SDR only).
Improved: Respond to chk_vfo remote command (needed by some clients).
Improved: Respond to dump_state remote command (needed by some clients).
2.17.329 Jan 2024 22:27
minor feature:
Fixed: Delete key shortcut for bookmark removal.