Uncover Hidden Treasures: How Coil Size and Shape Affect Your Metal Detecting Success

Metal detecting is one of the most popular hobbies today, attracting people from all walks of life. Whether you are an experienced treasure hunter or just starting out, choosing the right coil size and shape can make a huge difference in your success rate. In this article, we will explore the different types of coils available and how they affect your metal detecting experience.

Coil Sizes

The size of the search coil on your metal detector plays a significant role in determining its detection capabilities. Larger coils can detect deeper targets but may miss smaller or more delicate items. On the other hand, smaller coils are more sensitive to small targets but have less depth penetration.

Small Coils

Small search coils range in size from 3-6 inches and are ideal for looking for tiny objects like coins, jewelry pieces, and relics buried at shallow depths. These detectors work well in areas with heavy iron trash or high mineralization levels where larger coils would struggle to pick up a clear signal.

Medium Coils

Medium-sized search coils range from 7-9 inches and offer better depth penetration than their smaller counterparts while still being able to locate small targets effectively. They are great for general-purpose hunting as they provide good coverage without sacrificing too much sensitivity.

Large Coils

Large search coils measure over 10 inches and are perfect for deep relic hunting or searching large areas quickly. They cover more ground per sweep compared to smaller sizes but sacrifice some sensitivity when it comes to finding small items.

Coil Shapes

Apart from size, coil shapes also play a crucial role in determining how efficiently you can hunt using your metal detector. The three main types of coil shapes include Concentric Coil, DD (Double D) Coil and Mono-Coil.

Concentric Coils

Concentric coils produce a cone-shaped detection field that narrows down as it goes deeper into the ground making them ideal for pinpointing specific targets accurately. They also provide higher sensitivity towards smaller objects, but their depth capabilities are limited compared to DD coils.

DD (Double D) Coils

Double D coils produce a more elliptical detection field that provides better ground coverage and deeper penetration than concentric coils. They are also less sensitive to mineralization in the soil making them ideal for use in highly mineralized areas. However, they have a slightly reduced target separation ability compared to Concentric coils.

Mono-Coil

Monoloop or Mono-coils provide the deepest penetration of all three coil shapes. They have better sensitivity towards larger targets like coins and relics but compromise on smaller object detection abilities. Monoloops are best suited for relic hunting or searching deep targets over large areas with minimal iron trash since they offer excellent resistance to mineralisation in the soil.

Conclusion

Choosing the right size and shape of your metal detector’s search coil can make all the difference when it comes to finding treasures. Small coils are perfect for searching small items at shallow depths while large ones help detect deeper relics over vast areas quickly. Concentric coils offer better target pinpointing accuracy while Double Ds cover more ground per sweep with greater depth penetration. Lastly, mono-coils provide maximum depth penetration but lack sensitivity towards small objects.
It is essential to keep these factors in mind before choosing a coil as it will impact your hunt’s effectiveness significantly. Additionally, ensure you purchase quality equipment from reputable dealerships and take care of your tools appropriately by cleaning them after every session and storing them safely.

Happy Hunting!