ghound
Elite Member
Air tests are of value, many of the high audio gain units will air test silly deep, mine gets a silver dime at about 14" with a sniper coil, but in my soil it would be around 50% in ground with said coil.
Mild soil is where the high gain units shine on depth.
Mild soil is where the high gain units shine on depth.
Outside, people would only consider a valid test one with no EMI. But indoors, people are divided as to air tests being the highest setting that provides a beep, or is it the highest setting that gets a beep without any extra noises?
The in house noises are not likely heard at the nearest park or school.
Almost any detector will air test 10" on a dime if average or above. Some cheaper units will air test 8"-9" on a dime. Anything that does 11"+ amazing.