https://cdn.seriousdetecting.com/wp-content/uploads/2013/10/DoubleDCoil2.gif 155 372 Ewout Kozel https://cdn.seriousdetecting.com/wp-content/uploads/2013/09/sdlogo.png Ewout Kozel2012-03-16 20:59:092012-03-18 11:33:46Double-D coil
A Double-D coil has two overlapping wire windings in the shape of two D’s. The benefits of a Double-D coil are stability (especially in heavily mineralised ground), good depth, sensitivity and a very thorough search pattern requiring less overlap.
When used with GPX detectors, Double-D coils (unlike Monoloop coils) are able to discriminate between ferrous and non-ferrous targets when Iron Reject is activated. They are also more stable when used on wet salt beach sand and in electrically noisy environments.
When used with X-TERRA detectors, Double-D coils perform quieter than Concentric coils in mineralised ground and are therefore well suited for gold prospecting.