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.