The HFDY Active Loop is working extremely well, even from an indoor location in
MK68.
Design
I am currently running the loop at 5V (via a regulated linear power supply), where it consumes slightly less than 65mA. The recommended voltage is 10V, which I plan to switch to soon.
Results
I am using Airspy HF+ Discovery SDR for this experiment.
Future work
It would be very interesting to compare this HFDY Active Loop against the PA0FRI Active Antenna.