Gqrx SDR 2.17.5

• New: PlutoSDR and LimeSDR support in AppImage release, via SoapySDR.
• New: Airspy support in Windows binary release.
• Improved: Updated GNU Radio, SDR driver, and Qt versions in AppImage release.
• Fixed: Respond correctly to pipelined remote control commands.
• Fixed: Limit UDP packet size to 1024, for compatibility with netcat.
• Removed: FreeSRP support in AppImage release.

Gqrx SDR 2.17.4

• New: Experimental Windows binary release (RTL-SDR only).
• Improved: Respond to \chk_vfo remote command (needed by some clients).
• Improved: Respond to \get_powerstat remote command (needed by some clients).

Gqrx SDR 2.17.3

• Fixed: Delete key shortcut for bookmark removal.

Gqrx SDR 2.17.2

• New: FORCE_QT6 and FORCE_QT5 CMake options to force Qt version.

Gqrx SDR 2.17.1

• New: Delete key clears the waterfall.
• New: I/Q tool can save recordings in SigMF format.
• New: Holding Ctrl speeds up mouse wheel zoom.
• Improved: Reduced CPU utilization of waterfall display.
• Changed: DMG release requires macOS 12.7 or later.

Gqrx SDR 2.17

• New: "Avg" plot mode, which displays average of FFT bins.
• New: "Fill" plot mode, which displays both maximum & average of FFT bins.
• New: "Histogram" plot mode, which displays distribution of FFT bins.
• New: Selectable plot scaling: dBFS, dBV/RBW, dbV/√Hz, dBm/RBW, dBm/Hz.
• New: Min hold line in plot.
• New: A/B measurement markers on plot.
• New: Plot tooltip displays delta from demod frequency.
• New: Dropped frames are indicated by red background in FFT Settigns panel.
• New: "Avg" waterfall mode, which displays average of FFT bins.
• New: "Sync" waterfall mode, which mirrors averaged data from plot.
• New: Support for RTL-SDR Blog V4 in AppImage and DMG releases.
• New: Save FFT plot center frequency in settings.
• Improved: Peak detection algorithm.
• Improved: Peak detection uses peak hold data when available.
• Improved: Maximum FFT size increased to 4M.
• Improved: Maximum frame rate increased to 500.
• Improved: Averaging slider is consistent across frame rates.
• Improved: Visibility of text in axes.
• Improved: Full support for high-DPI screens in plot & waterfall.
• Improved: Plot & waterfall performance.
• Improved: Plot can be zoomed & resized while DSP is stopped.
• Improved: FFT window setting is stored as a string.
• Improved: Waterfall span setting is stored in milliseconds.
• Improved: Added 6 dB attenuation to WAV file recordings to prevent clipping.
• Improved: Use logarithmic scale for frequency zoom slider.
• Improved: Reduced CPU utilization of demodulators.
• Improved: Properly handle smooth scrolling.
• Improved: Shorten band names to fit in narrow spaces.
• Improved: Delay plot & waterfall drawing until samples arrive from hardware.
• Changed: Frequency zoom slider zooms around center of display.
• Changed: Disallow scrolling beyond the FFT frequency limits.
• Changed: Default narrow FM deviation increased to 5 kHz.
• Fixed: Time on waterfall is calculated correctly.
• Fixed: Frequency is correctly rounded in I/Q filenames.
• Fixed: Crash in AFSK1200 decoder.
• Fixed: Hang when setting a very narrow filter width.
• Fixed: Inconsistent 1-2-5 scaling of amplitude axis.
• Removed: "Save waterfall" feature.

Gqrx SDR 2.16

• New: Restore AM & AM-Sync settings between sessions.
• New: Set/get audio gain via remote control.
• New: Only show bookmarks for active tag groups in the panadapter.
• Fixed: Loading of narrow FM tau setting.
• Fixed: Crash when adding or removing bookmark tags.
• Fixed: Redraw bookmarks immediately after changes.
• Fixed: DX cluster spots fail to expire around midnight.
• Fixed: AGC sensitivity bug introduced in version 2.15.10.
• Improved: Rendering of frequency control and S-meter on some high-DPI screens.
• Removed: Support for GNU Radio 3.7.

Gqrx SDR 2.15.10

• New: Restore FFT zoom level between sessions.
• New: Restore peak detect & peak hold between sessions.
• New: "Z" keyboard shortcut sets frequency offset to zero.
• Fixed: Remove empty frame from bottom of I/Q tool window.
• Fixed: Sudden scrolling of file list in I/Q tool window.
• Fixed: Reset zoom slider after right click on panadapter / waterfall.
• Fixed: Aliasing when input rate is higher than 2 Msps.
• Improved: AGC performance.
• Improved: WFM stereo & OIRT performance.
• Improved: I/Q swap performance.
• Improved: Apply amplitude normalization to FFT window functions.

Gqrx SDR 2.15.9

• New: Qt 6 support.
• Fixed: Slider widgets don't work correctly on MacOS Monterey.

Gqrx SDR 2.15.8

• Fixed crash when DSP is restarted after a long pause.
• Removed usage of deprecated Qt APIs.
• Return correct RDS status in remote control.
• Allow ordinary IP addresses to be used in remote control settings.