so you can notch out specific junk categories while still accepting coins that fall in the same conductivity band

less time setting up

but keep it low enough that you don't lose small gold

and mining equipment without the false signals that force you to drop sensitivity on other machines

Groundtech GR-3 3D Ground Scanner jewelry hunting so you can notch outThe Groundtech GR 3 is an ultra compact, completely wireless 3D ground scanner for treasure hunters, relic seekers, and archaeologists who want deep seeking technology in a highly portable format. Weighing just 600 grams (1. 3 lbs) with no heavy batteries or tangled cables, the GR 3 uses CN D dual gradiometer sensors to reach scanning depths of up to 7 meters (approx. 23 feet). It includes the Groundtech App for installation on your Android or iOS