The GNU Radio YouTube channel has recently finished uploading the talks from GRCon21, this years annual GNU Radio Conference. GNU Radio is an open source development toolkit for signals processing and is commonly used to build software demodulators and decoders for Software Defined Radios.

The GNU Radio conference talks are generally about cutting edge SDR research topics and the YouTube playlist contains 67 videos covering a gambit between what changes have been made in new releases of GNU Radio to presentations and demonstrations focusing on topics such as reverse engineering smart power meters and 5G cell detection among many others.

Some of the talks from this years conference that we found most interesting include:

• gr-tempest: Spying Video Interfaces Through Electromagnetic Emanations
• Reverse Engineering Smart Meters
• Keynote: The Square Kilometre Array
• Analog Devices: Implementing OFDM Radar & DOA on DirectRF Platforms using IIO and GNURadio
• Passive bistatic RADAR using spaceborne Sentinel1 non-cooperative source
• Deep space reception by AMSAT-DL
• Multi-Receiver Real-time Physical Intrusion Detection “Burglar Alarm” with GNU Radio