John Kyritsis’s amended Goldfield program:
Audio Response: 3
Freq: 7,7 KHz (or you can experiment with 3,7 KHz for your ground).
Expert: TX Power: 3
Any settings not mentioned are presumed to be factory default.
The coil must be held at least 20 cm above the ground when searching. The coil sweeps must be wide and fast. Ground Balance should be made periodically by lowering the coil to the ground surface and pressing the Pinpoint key to grab/update the ground value.