Some of the better ‘all purpose’ detectors can make a pretty good job of most treasure hunting assignments, but there are certain machines specifically designed for such tasks as underwater work and gold nugget hunting. *Depths vary by model, manufacturer and coil size. The two most important things for you to do today are to become familiar with your machine, and to use it at the proper sweep-speed.
Many other factors can affect your detector’s depth, but the same factors will affect all other detector depths. Quarter-Half Dollar sized targets – 6 to 12 inches*įruit jar lid sized targets – 8 to 16 inches*. Nickel-Dime sized targets – 4 to 8 inches* Using an incorrect sweep-speed will also affect depth, but the following figures are achievable with a correctly used detector: Most of them are also fitted, as standard, with search coils of around 8″ diameter, which is generally regarded as the optimum size for coin hunting on sites with moderate amounts of metallic litter. This question is much easier to answer nowadays because virtually all modern metal detectors are ‘motion’ or VLF discriminator types. Metal detectors can be expected to find coins around this depth. How deep can good metal detectors be expected to find coins?
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