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Types of CoilsUpdated a year ago

There are different types of coils that can be added to your detector. The Concentric, Double-D (DD) and the mono coil are the three types available. Be low are the differences between these types of coils. 

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Concentric Search Coil 

This coil has 2 inner coils; send and receive. Magnetic waves are sent into the ground shaped as an inverted cone...detecting area diminishes with depth (diameter of search area decreases with depth). Easy to pinpoint with.

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Double-D Search Coil 

Sports two half-coils (Hence the “D” reference) that are joined in a straight strip down the middle. Sometimes called a “Butterfly” coil. Detection area does NOT shrink with depth! Challenging to pinpoint with if you started with concentric. 



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Mono Coil

These coils are mainly used for finding gold. They are more sensitive than a DD coil and similar to a concentric coil. They do provide more depth than the DD and are great for finding small gold.

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