AirSpy HF+ vs. HF+ Discovery: Ivan’s blind daytime propagation comparison
Many thanks to SWLing Post contributor, Ivan NO2CW, who shares the following:
I did this video where I compared the two Airspy editions [HF+ and the new HF+ Discovery] only calling them Receiver 1 and Receiver 2:
Click here to view on YouTube.
Using the same W6LVP loop. 3 PM local time daytime propagation. Testing on Medium Wave and Short Wave, no VHF. AM broadcast signals only.
Ivan also included an image comparing the size of the HF+ discovery with other popular SDRs:

From top to bottom: the Microtelecom Perseus, SDRplay RSP, AirSpy HF+, Airspy HF+ Discovery, and the RTL-SDR.com SDR dongle.
When I demo the AirSpy HF+ to radio clubs, folks are amazed that such a tiny SDR can provide benchmark performance. It's hard to believe the HF+ Discovery might even provide more performance from an even smaller package!
Thanks, Ivan for sharing these comparisons!