2.5.2: Released Januar 21, 2016.
NEW: Support for Red Pitaya (RX only).
NEW: Build with GNU Radio 3.7.9.
IMPROVED: Increased spacing between frequency divisions to prevent overlap.
IMPROVED: Reduced minimum window size requirement to around 800x600 pixels.
2.5 Released January 7, 2016
NEW: Read out signal time and on the waterfall (disabled on OS X).
NEW: Save waterfall to graphics file.
NEW: Allow user settable waterfall time span (up to 24 hours).
NEW: Cmake option to build using gr-audio backend (Andrea Merello).
FIXED: FM stereo (revert to pre-2.4 behavior).
FIXED: Mode selector not updated when selecting a WFM OIRT bookmark.
FIXED: Show correct filter preset when filter LO/HI corresponds to one.
FIXED: Prevent RDS panel from growing by making it scrollable.
FIXED: Use correct audio backend on OS X (app bundle only).
IMPROVED: Button layouts (mostly on Mac OS X).
2.4 Released December 14, 2015
NEW: Bookmarks.
NEW: FM RDS decoder using gr-rds.
NEW: Frequency tooltips on the FFT area (disabled on Mac).
NEW: Filter shape selector (soft, normal, sharp).
NEW: Slider to aid zooming on the frequency and dB axes.
NEW: RFSpace Cloud-IQ support.
NEW: OIRT stereo decoder (Daniil Cherednik).
NEW: Input decimator.
FIXED: Prevent crash due to device errors while starting the application.
FIXED: Use hardware frequency in IQ file names.
FIXED: FFT averaging (it can now be disabled).
FIXED: "Could not resolve pattern10600" error messages in the terminal.
FIXED: Antenna selection error with USRP B210 (Ethan Trewhitt).
FIXED: LNB LO value not updated in I/O config dialog.
FIXED: Initial gain of rtlsdr devices is no longer 0 dB.
FIXED: DSP freeze when setting FM de-emphasis time constant to 0.
FIXED: Use correct main category in desktop entry file.
IMPROVED: Support up to 1M point FFT.
IMPROVED: Fractional PPM correction.
IMPROVED: AGC peformance.
IMPROVED: FFT performance.
IMPROVED: Right click on frequency digit to clear digits.
IMPROVED: Robustness against malformed remote control commands.
2.3.2 Released November 28, 2014
FIXED: Pandapter and waterfall widths are limited to 4096 pixels.
IMPROVED: Add 2.5 Msps preset for Airspy.
2.3.1 Released August 8, 2014
FIXED: Use correct categories in .desktop file.
2.3.0 Released August 5, 2014
NEW: Support for setting analog bandwidth.
NEW: Support for setting gain stages individually.
NEW: Remember visibility status of main toolbar.
NEW: Restore the geometry of the main window between sessions.
NEW: Restore the state and placement of the dock windows.
NEW: Nuand BladeRF support.
NEW: RF Space SDR-IQ, SDR-IP and Netsdr support.
NEW: Airspy support.
NEW: Peak detection on the FFT plot.
NEW: Max hold on the FFT plot.
NEW: Audio streaming over UDP socket.
NEW: Remote control through TCP socket.
NEW: Set squelch level from current signal/noise level.
NEW: Command line option to list existing configurations.
NEW: I/Q recording and playback.
FIXED: Incorrect handling of decimal values in LNB LO frequency.
FIXED: Correctly apply initial LNB LO frequency.
FIXED: Audio output device selection on Mac OS X.
FIXED: Properly store settings when using Save As function.
FIXED: Crash when recording audio whith no rec directory set.
FIXED: Only allow audio playback while DSP is running.
FIXED: Ensure DSP is stopped when we exit.
FIXED: Freeze when switching modes after audio recording.
FIXED: Toggling "ignore limits" changes frequency.
FIXED: Include gqrx.dekstop file.
FIXED: Rename scope.svg to gqrx.svg to avoid confusion.
IMPROVED: Gqrx can fit on small screens (900x600 pixels).
IMPROVED: Better color gradient for the waterfall.
IMPROVED: FFT presentation at high rates and high sizes.
IMPROVED: Make release news available through the Help menu.
2.2.0 Released August 8, 2013
NEW: Official Ubuntu PPA and Mac OS X app bundle.
NEW: Allow using audio output devices other than the default.
NEW: Automatic I/Q phase and gain correction (requires gr-iqbal).
NEW: Qt 5 support.
NEW: GNU Radio 3.7 support.
NEW: HackRF Jawbreaker support.
NEW: Funcube Dongle Pro+ support.
NEW: Option to select antenna connector on e.g. USRP devices.
NEW: Configuration option to choose location of WAV recordings.
NEW: Uses gr-audio as default on all platform (pulseaudio still possible).
NEW: Command line option to remove configuration file.
NEW: Command line option to launch I/O device editor before application.
FIXED: Frequency control widget with recent Qt was broken.
FIXED: Bug that caused audio FFT data to be leaked into the I/Q FFT.
FIXED: Audio recording & playback.
FIXED: Proper handling of frequencies above 2147483647 Hz.
IMPROVED: Y-axis panning (click-and-drag).
IMPROVED: Rescale waterfall when resizing the main window.
IMPROVED: gr-audio support on Linux.
IMPROVED: Audio gain setting no longer has impact on WAV recording.
2.1.251 Released on March 1, 2013
FIXED: Incorrect device selection in config dialog.
2.1.246 Released on February 29, 2013
NEW: I/Q swapping option.
NEW: FFT video filter with non-linear gain (still WIP).
NEW: Save and restore FFT settings.
NEW: Save and restore receiver options (offset, mode and squelch level).
NEW: AM DC removal using IIR filter.
FIXED: Removed graphics redraw delay when changing frequency or demodulator.
FIXED: Respect RF frequency range of input device.
FIXED: Added workaround for pixel error introduced in Qt 4.8.
FIXED: Crash when FFT size is smaller than plot width.
FIXED: Show correct initial filter preset in filter selector.
FIXED: Workaround for 'jerky streaming' when DSP is started using rtlsdr.
FIXED: Freeze when channel filter becomes too narrow in AM and FM modes.
FIXED: Crash when changing sample rate of the current input device.
CHANGED: Show device ID (e.g. rtl=0) in title bar instead of description.
IMPROVED: AGC settings moved to dialog window.
IMPROVED: Increase LO resolution to 1 Hz.
IMPROVED: GUI layout fixes for Mac OS X.
IMPROVED: Shortcuts for resetting and re-centering FFT plot after zooming.
IMPROVED: Crash recovery in case of bad config file.
IMPROVED: Support 50 fps FFT rate and allow disabling FFT.
IMPROVED: I/Q DC canceling.
2.1.148 Released on December 9, 2012
NEW: Support for USRP and RTL2832U (rtlsdr) devices.
NEW: Pan & zoom on the pandapter axes.
NEW: Allow changing FFT size.
FIXED: Mac OS X compatibility.
IMPROVED: Various improvements to the user iterface.
2.0.0 Released on July 7, 2012
First stable release of C++ version with Funcube Dongle support.
1.x
Initial experiments using Python and gr-qtgui.