Quick answers to many common questions we get asked from around the world.

This page is designed to provide quick answers to many common questions we get asked from around the world. We hope that it will help you in your prospecting endeavors and lead to quicker results when you have any issues. We intend this to cover a broad range of prospecting queries and not only concentrate on the Coiltek product.

From time to time we will be updating this page with more questions as they arise and encourage you to contact us with your suggestions which could help others with their detecting experience.

At Coiltek Manufacturing (CTM) we provide a full 2 year warranty on all of our manufactured coils and accessories (some products may vary). This warranty starts from the date of purchase by the customer. This is applicable worldwide. This warranty covers any manufacturing errors like cracks in plastics or performance issues like no response which are from manufacturing faults – usually these are noticeable within the first few hours of use. The warranty does not cover normal use or misuse of the product. For a coil/product to continue to perform well it must be treated with care and not be used in a way that will jar or incur any sudden impact. This sudden impact may result in developing a noisy product. CTM, at its sole discretion, will determine the nature of the returned item and decide whether it is a warranty issue. Each individual case will be reviewed on its own merits and the more information you can provide the easier it will be for us to make a quick decision.

Yes – the warranty is covered for the first two years from original purchase date. It is important to register your warranty with us so it is easy to track if you ever sell your equipment.
When wanting to claim warranty within Australia, you can either return it to your place of purchase or fill out the warranty and service form and we will get back to you. If you are required to send the product back, it is essential you include your proof of purchase docket and a short note informing us of the problem which has occurred. If you have purchased a product outside of Australia you must return it with your proof of purchase to your local dealer who will handle the warranty claims. You can also contact us via our contact us page to obtain more information.
If you are within Australia then in some cases, yes. There is a repair charge plus freight if the coil is outside of its warranty period. If you wish for your coil or any other product to be repaired or reviewed you can forward it to us and we will assess the situation. Please include a note with your contact details and comment regarding the products behaviour. If you are outside of Australia then usually it is quite expensive to return the coil to us and if out of warranty can sometimes mean a new coil purchase. Please contact your local dealer for more information. In the case the product cannot be repaired we will contact you to discuss the options.
Usually yes, especially if you are in the middle of a planned trip and the coil is out of its warranty period. Any repair or modification not performed by Coiltek whilst the product is under warranty will void the warranty for that coil product. Regular inspection of your product can ensure you get on top of any damage early and help you use it for longer.
Sometimes this can happen depending on the age of the coil or how it has been stored. The most crucial part to protect on the coil is its cable, especially where it enters the coil housing. If the cable happens to break at this point it is not fixable and must be returned for repair or maybe be it may be irreparable. If your coil is a fully submersible coil and there is a break at this part then the coil is not repairable. If you notice this, we recommend you turn off your detector quickly and avoid using the coil until fixed or replaced. To prevent coils being damaged we recommend that the skid-plate is used at all times. Also, ensure your coils are stored carefully and no moisture enters the coil. Always check the strain relief area where the cable enters the coil for cracks or signs of wear. Regular inspection can help prevent things going wrong in the field.
Definitely yes, only if the water gets to the internals of the coil. If you have a fully submersible coil then water will not damage the coil. Water will short out any contacts and make the coil extremely noisy. For a complete view of our coils range and which ones are fully submersible view our Coil Comparison Chart.
Pinpointing is basically the same as other coil configurations however the method of tilting the coil on its side for mono’s may not be the best with this new design. Using the cross hairs method is more accurate. In this method you work up to the target found in a sweeping motion and listen for the loudest tone and visually note where the sound is heard under the coil. Usually the loudest tone is quite central to the coil width. Mark the ground with your foot in a line along where you believe the target is. Now turn 90 degrees to this line and again slowly swing up to the target area and repeat the first method. You should now have two lines which intersect. This intersection is a good way to dig in the right place. If the target is out of the hole, spread the dirt from the dig with your shoe so it is has a flat surface and slowly swing over the area listening for the loudest tone to appear. The most sensitive area of the coil is around one inch in from the edge of the coil plastics. We also recommend you use a test piece on the ground and practice the technique listening for the most repeatable, responsive area of the coil so you become used to a method that works best for you.

Yes, all Coiltek coils are supplied with a skid plate already attached to the coil. We also supply a wingnut and bolt with each coil for your convenience.

Yes, you can run without a skid plate. However it is always recommended to use a skid plate to avoid any unwanted damage to the coil base especially with the plastic housed coil type. Running a Coiltek coil without a skid-plate does not void warranty.
An anti-Interference (A.I.) coil has unique abilities which set this coil apart from the others. Its main purpose is to eliminate any external interference which the metal detectors are susceptible to. The interference can come from Salt Lake hunting, electric fences, power lines, phone towers, metropolitan areas, airports, solar activity etc. By using a coil of this type you can use your detector with little or no interference noise unlike a DD or MONO. The next benefit is that the performance of the A.I. coil is only approximately 5% less than a DD coil of similar size. Therefore you can be assured that you are getting excellent depth and sensitivity where ever you use this coil type. This coil type has already been used with great success on and around salt lakes and directly under power lines in a gold bearing area. It has helped many obtain more targets in these areas as in the past no detectors could hunt in these locations with any great success. We have many people using these coils as a general hunting coil. We believe it is an essential tool to have in your detecting kit.
We currently have an extensive network of dealers and distributors around the globe. Please see our where to buy page for one closest to you or contact us and we can advise you the best place to purchase.
Storing coils properly is essential to ensure good life from your product. The main area to protect is of course the cable, especially where it enters the coil. Most of the failings we see are at this point mainly due to constant use or pressure being placed on the entry point. When storing the coil make sure that the strain relief area has no pressure placed on it by way of other objects laying on top or being placed in tight areas. The more the cable bends in this section the more the risk of it breaking wires internally. We suggest protecting this area by means of cardboard packers or bubble wrap wrapped around the strain relief. Remember that the last thing you need happening is a coil failing in the field when you have travelled a great distance to get there. Always check you full kit before you leave!
This answer depends on what ground you hunt and what you prefer to swing. However here are some points which might help you decide what you would like to use. With the round coils you have a broad search field being emitted and this can help with depth but with the larger round coils (18” and above) can reduce your sensitivity to the sub gram targets. The round coils have the ability to cover lots of ground but can be hindered somewhat if the terrain becomes overgrown or covered in large rocks. They can pinpoint well but do take some time to find their ‘sweet spot’ but many operators are very confident with these coils. The elliptical has a narrow search field but can compensate for this as it is longer from tip to heel. It has a better ability to maneuver through tight detecting areas and can also pinpoint a little better due to the tight field at its ends. They have a great ability to cover lots of ground as they are usually longer than the equivalent round which can save time. Also because they are quite narrow compared to the round they provide a better target separation which means when you encounter two targets close together the coil can help identify to the operator that there are two targets in the ground. The Elliptical is a very popular coil for its all round ability. By assessing your hunting area and knowing the approximate depth you wish to search to will help you choose what coil to use for that area.
This all depends on what metal detector you are using. It is best to contact us and we can assist you in choosing the best coil for each individual situation.

Smaller coils are great for the little nuggets, less than half a gram, which are reasonably close to the surface, within 100mm. They are great for areas that have been surfaced down to bedrock. Also good for species that don’t have a lot of gold in them, so ideal for detecting exposed reefs. Their physical size makes them ideal for working heavily vegetated areas and creeks with large rocks. Larger coils can detect targets deeper, but only when the targets are larger. They are not as sensitive to the tiny nuggets. They cover a lot more ground for each swing but can be difficult in areas where there is a lot of vegetation. Both small and large coils can pick up a range of target sizes however the targets need to be within the range of the magnetic field of the coil for it to respond. For small coils the field is smaller than the larger coils, but with smaller coils you have a tighter field so sensitivity is improved. Larger coils fields are broader and less sensitive but can punch deeper in to the ground than the small coils.

Gold Extreme Series

Frequently asked questions about the Gold Extreme series.

With a choice of coils now available for the SDC2300, choosing the correct coil for the right environment can enhance performance of this machine. When detecting in thick vegetated areas, the 10″x 5″ GOLD EXTREME is the best choice because its dimensions allows access to tighter areas in dense bush-land. In large open areas, where the gold is sparser and the vegetation less dense, the larger 14″ x 9″ GOLD EXTREME which provides greater ground cover which is optimum in these broad areas. The 11″ GOLD EXTREME has the capability of finding larger nuggets at depth which the smaller and standard coils may miss and would be the choice for deeper ground where targets may be expected at depth.
Most other metal detectors already have a range of coil sizes and types for each machine which suit different environments. Now the SDC2300 detector has a variety of coils that could enhance the detectors capability of finding gold in different environments. Each coil has a specific purpose and as with other metal detectors, these coils may greatly improve the capability of finding gold. Having gold extreme coils in your detecting toolkit, will provide the ability to select the most appropriate coil for the given situation. The combination of new coils offers the same flexibility for the SDC2300 that has been available in other machines.
Small coils are best at finding tiny nuggets that the stock coil may not see as well. Small coils are ideal in rough terrain and good at getting into tight spots, cracks, crevices and between rocks where the nuggets like to hide. Due to this coils elliptical shape it has an easier ability for pin pointing and easier manoeuvrability in rougher terrain. The small coil can have a brighter signal response on small targets due to a tighter magnetic field and this can be the difference between hearing a signal or not.
With the 11″ coil you could expect greater depth on larger nuggets. The coil won’t be as sensitive to tiny nuggets as the 8″ standard but you can use the 10×5 coil for chasing them. Due to the coils larger size you could use the 11″ coil as a patch finder possibly assisting to locate new nugget bearing ground by covering a greater area more quickly. Areas you have been over with the original coil, can now be detected deeper into the ground.
This large elliptical coil has the best ground coverage providing 6″ extra per sweep. You could expect the 14×9″ coil to penetrate deeper than the standard coil, cover more ground than the 11″ and 10×5″ coils and run smoother in highly mineralised ground. The Elliptical shape allows for the toe of the coil to get up under brush a little easier than stock coil. Pinpointing of the targets can be faster with this coil. Performance on small targets would be less than the standard coil but it would pick up deeper targets than the standard coil.

NOX Coil Series

Frequently asked questions about the NOX series.

There are three coil sizes in the NOX series to suit the Equinox detectors. A small elliptical 10×5″, medium elliptical sized 14×9″ and laregr round 15″ coil. All three coils have excellent performance characteristics and each offer different abilities and opportunities for your detecting.
Yes, all of the NOX coils are fully approved by Minelab and will be able to just plug in to the detector, switch on and start detecting. Easy!
Each of the three NOX coils will have great attributes for beach hunting however we feel that the 15″ round coils will be best suited to the beach hunting as it covers the most ground and has excellent depth capabilities. If you are searching in or under water a lot then we would recommend the 14×9″ NOX coil as this handles this environment very well and being elliptical can be slightly easier to manoeuvre.
Not one coil will find all the treasure in the ground. By using different coils you will find that your finds may increase and by going over productive ground with a different coil can unearth even more treasure. The smaller coils have better maneouverability and sensitivity where the larger coils have better coverage and depth. The new NOX coils have been designed to optimise your performance in the field as you can now utilise more options when detecting.
The 10×5″ NOX coil will be the best coil for sensitivity. As this coil is a small elliptical the detection field which is produced by the detector and coil is more concentrated therefore improving sensitivity to the smaller targets. It is a very maneouverable coil with excellent pinpointing ability also so it will be a fantastic option for parks and playground and also areas of high trash to seek out the good targets in between.

The 15″ NOX coil is our deepest searching coil for the Equinox detectors. If you have more open ground, or searching on the beach, this coil will be an excellent option to use as it will cover ground quickly and also punch deep to search out those larger deeper targets.

Yes, all of the NOX coils made by Coiltek are fully submersible to 3 meters.

No, the NOX coils are all plug and play and will work with our preferred settings for any other coil. The only thing you may need to do is adjust sensitivity or perform a noise cancel.

All three NOX coils will be able to find gold but considering most gold is quite small the 10×5″ NOX coil will be the best suited for this type of detecting. It also has the smallest footprint of the three NOX coils which means it may not be as affected by ground mineralisation so can run smoother in the goldfields. When hunting for gold remember to swing slowly and list for any subtle changes in threshold which are repeatable as this means a target – hopefully a golden one!