![]() ![]() Today’s smart coils include features such as advanced signal boosting, which enables faster target response and increased depth. The early smart coils, such as the ones designed for the Minelab X-TERRA detectors, would change the Tx frequency of the detector, enhancing it for various detection scenarios like gold fields and beach detecting while still being an excellent treasure detector. Smart coils contain circuitry that interacts with the detectors control box, unlocking many advantages for the user. Although the Monoloop coil can provide better depth than the Double-D, the monoloop can be more difficult to ground balance in heavily mineralised soils where the Double-D reigns supreme. The Monoloop coil features a single winding around the outside of the housing that both transmits (Tx) and receives (Rx) signals, producing a large cone shaped pattern and typically giving the best depth. If you are hunting in areas with high EMI or salty environments like the beach, the Double-D coil may be the best choice. ![]() The Double-D configuration provides good stability, great depth, superior ground balancing and an expanded search pattern that requires less overlap. While this configuration does require more sweep overlap, it tends to be the most accurate when pinpointing targets.Ī double D coil has two overlapping wire windings in the shape of two D’s, this sends out a signal centralised to the coil in a blade or chisel type pattern. The concentric coils transmit winding is around the outside of the coil, the receive winding is in the centre, producing a cone shaped pattern. The three most common types of coil configurations are Concentric, Double-D, and Monoloop. Open web coils are lighter and reduce drag for aquatic hunters to pass through water. Circular coils are the most common because they are stable and offer the best performance, while different, non-circular shapes are used where there is a need to conform to a particular physical requirement.Įlliptical coils are easier to manoeuvre around bushes or between rocks, while still covering the same amount of ground as a circular coil of the same size. While smaller coils will provide increased sensitivity to small nuggets close to the surface.Ĭoil shape can be an important factor. There’s also the added benefit that small coils can fit in very confined areas.įor coin and treasure detecting, the larger coils are best where you want to cover large areas quickly, where smaller coils are great if you’re in areas with lots of shallow targets mixed in close proximity with undesirable iron targets.įor gold detecting, generally you will be in remote areas that have little to no EMI, so a large coil will give you more ground coverage with maximum sensitivity and depth. On the other hand, smaller coils have greater sensitivity to smaller, shallow targets and are less susceptible to EMI. ![]() Large coils have less sensitivity to smaller targets and a greater susceptibility to Electro Magnetic Interference (EMI), meaning you may have to notch that sensitivity right down, depending on the interference of the location. This sounds like the be all and end all, but the extra depth comes at a price. A good rule of thumb is ‘the larger the coil, the more ground you can cover and the deeper it can go’. The size of a coil can influence the detection depth and sensitivity of a metal detector. ![]() Today we’ll take you through the different coil sizes, shapes and construction to help you pick the best one for you and your detecting. However, with so many different coil types out there, it can be a daunting task to select the best one for you. For beginner detectorists, once you have learnt your machine, adding a different coil to your arsenal is a great option to improve your detecting odds and productivity. Whether it’s gold prospecting, treasure hunting on the beach or searching fields for lost Roman artefacts, once you get started it’s hard to stop. If there is one thing we can all agree on, it is just how addictive metal detecting can be. ![]()
0 Comments
Leave a Reply. |