80m Receive Antenna

The 80m ARDF Receive Antenna is designed to plug into the dual-band receiver and provide selectable figure-8 and cardioid antenna reception patterns. The receiver and antenna will support applying a DC voltage onto the center conductor of the antenna transmission line in order to select the cardioid pattern, allowing the receiver to house the “sense” button. An early prototype of the antenna is shown connected to a handheld HF receiver in the photo below.

80m ARDF Antenna Prototype w/ HF Scanner

The latest schematic of the experimental antenna is available here.