The YagPlot DF is a unique portable DF for use with directional antennas of any type. YagPlot generates a high-quality polar plot display of signal strength versus signal direction, using a PalmOS PDA for a display. ( 160 x 160 screen )

An external receiver is required, and must be modified to provide an RSSI or S-meter signal to the DF. The DF itself has an electronic compass to sense direction. User must provide PDA display, receiver and directional antenna.