Bounty Hunter Digger Metal Detector "3006 radio" Questions

cmb118920@yahohow do u set the bounty meatal detector to find gold only yes, please let me know how to find gold only with my radio shack 63-3006

...Radio Shack Metal Detector without an instruction book. On the control box is number 63-3006. It has four knobs on the control box titled Mode, Ground, Discriminator and Sensitivity. Also a knob for ...