This search coil is very suitable while working on medium soils, when you need to take out all the flake coins in a clean place. High frequency makes it possible to see the coin on the edge and at a sufficiently great depth.
Disadvantages of the coil:
1. Depth for large copper coins is very small.
2. False alarms on complex soils and in wet weather. The coil is very demanding and needs regular rebalancing. Just like a 6x10 coil with a frequency of 20 kHz , it strikes rusty iron in the non-ferrous zone of a large copper coin. It will take time to get used to distinguish the sound of a piece of rusty nail from a useful target.
Advantages of the coil:
1 Finds easily all small targets, including those located on the edge, at the greatest possible depth.