SDRangel version 7.9.0 released

SDRAngel is a multi platform general purpose software defined radio program that supports many SDR hardware.

The latest release, v7.9.0 includes the following changes and fixes:

FT8 Demodulator

New demodulator/decoder for FT8. See here. There is more to come with a feature collecting and consolidating data from several such demodulators and possibly connecting to a transmitter channel for transceiver functionality.

Other changes and fixes

  • SDRPlay: increase LO ppm range. Fixes #1576
  • Initialize m_running to fix crash #1574. PR #1575 from @srcejon
  • Map feature: added MIMO devices when scanning for channels
  • Spectrum: Keep frequency displayed while channel is being dragged. PR #1570 from @srcejon
  • LimeRFE: save Rx/Tx mode in m_rfeBoardState. Fixes #1557
  • Audio Input: Make sure audio device name corresponds to GUI setting. PR #1565 from @srcejon
  • Audio Input: Set start/stop button background colour according to device status. PR #1565 from @srcejon
  • Add reset measurements button to Spectrum GUI, PR #1565 from @srcejon
  • Speed up enumeration / opening USRP B210 by using hardcoded values. PR #1566 from @srcejon

Version 7.8.6 which was released January 12, 2023 included the following changes and fixes:

  • SSB demod: corrected DSB filter
  • Fixed CI/CD issues and warnings (1)
  • Scan for serial AMBE devices on Windows PR #1543 by @srcejon
  • Fixed possible sample device pointer not set yet when DSPMIMOSignalNo…Fixes #1529
  • Fixed passing QPoint reference from right click enabler to connected… Fixes #1549
  • Support relative satellite image URLs PR #1550 by @srcejon
  • Add progress dialog for device enumeration, as some drivers are slow PR #1555 by @srcejon
  • Reenable 3D Map PR #1555 by @srcejon
  • Fix #1559. Update protocol before calling setAzimuthElevation PR #1560 by @srcejon
  • BladeRF v1: fixed VGA controls in GUI. Fixes #1535
  • Re-enable LimeSuite in Windows with latest commit
  • FT8 demod support library. Part of #1561

SDRangel uses include:

  • ADS-B Decoder: Decodes aircraft ADS-B data and plots aircraft positions on a map
  • NOAA APT Decoder: Decodes NOAA weather satellite images (in black and white only)
  • DVB-S: Decodes and plays Digital TV DVB-S and DVB-S2 video
  • AIS: Decodes marine AIS data and plots vessel positions on a map
  • VOR: Decodes VOR aircraft navigational beacons, and plots bearing lines on a map, allowing you to determine your receivers position.
  • DAB+: Decodes and plays DAB digital audio signals
  • Radio Astronomy Hydrogen Line: With an appropriate radio telescope connected to the SDR, integrates and displays the Hydrogen Line FFT with various settings, and a map of the galaxy showing where your dish is pointing. Can also control a dish rotator.
  • Radio Astronomy Solar Observations: Similar to the Hydrogen line app, allows you to make solar measurements.
  • Broadcast FM: Decoding and playback. Includes RDS decoding.
  • Noise Figure Measurements: Together with a noise source you can measure the noise figure of a SDR.
  • Airband Voice: Receive multiple Airband channels simultaneously
  • Graves Radar Tracker: For Europeans, track a satellite and watch for reflections in the spectrum from the French Graves space radar. 
  • Radio Clocks: Receive and decode accurate time from radio clocks such as MSF, DCF77, TDF and WWVB.
  • APRS: Decode APRS data, and plot APRS locations and moving APRS enabled vehicles on a map with speed plot.
  • Pagers: Decode POCSAG pagers
  • APRS/AX.25 Satellite: Decode APRS messages from the ISS and NO-84 satellites, via the built in decoder and satellite tracker.
  • Channel Analyzer: Analyze signals in the frequency and time domains
  • QSO Digital and Analog Voice: Decode digital and analog voice. Digital voice handled by the built in DSD demodulator, and includes DMR, dPMR and D-Star.
  • Beacons: Monitor propagation via amateur radio beacons, and plot them on a map.

More information, documentation and support can be found on the SDRangel website at

You can download the latest version of SDRangel from github