Why are there so many types of searchcoils?
The two most popular styles of coils today are the Concentric and the Wide Scan. The Concentric is a much better discriminating coil than a Wide Scan, but is much more affected by the ground you are hunting on. It generates a much more uniform field than a Wide Scan and is the type generally used on most detectors built today. The Wide Scan coil, though, since it is less affected by the ground, can be a much superior coil in areas of high mineral concentrations. While it lacks a little bit in finding the absolutely tiniest bits of gold, Tesoro uses this style as standard on its Lobo and Diablo II nugget hunters. Both coil configurations are built by Tesoro in round versions for its all-purpose detectors and in elliptical versions for its nugget hunters. Each shape (round and elliptical) uses a different connector, as they are not interchangeable with each other.
