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Frequently Asked Questions

1. Why do I need to hold the search coil up in the air while turning the device on?
This process not only resets the internal settings of the device but also filters the majority of the negative factors in the surrounding environment. These factors may adversely affect the performance of the device. Holding the search coil in the air therefore enables the device to have better depth and discrimination quality. You must hold the search coil up in the air for 20 seconds at each power up. Make sure there is no metal present around you during this process. As Golden King is a deep penetrating device, you must also be careful not to hold the system box parallel to the search coil, but rather hold it on your side. Please review the sample video in the Golden King Usage CD.

2. Can I search without ground balancing?
Golden King is a professional metal detector. You need to ground balance to be able to get the maximum depth and increase discrimination quality. Minerals in the ground may decrease detection depth, distort discrimination and cause ground noise. In order to avoid all these adverse situations, you must ground balance the device.

3. What is the difference between automatic and manual ground balance?
Automatic Groud Balance sets the sensitivity level to 80 automatically. On the other hand, you can increase or decrease sensitivity when manually ground balancing. If you decrease sensitivity after ground balancing automatically or manually, you do not need to ground balance again. However, if you increase sensitivity you must manually ground balance again.

4. I cannot ground balance automatically. I am constantly getting "You are over a metal target. Change your location" message. Why is that?
This message may appear due to a few reasons. There may have been a shift in the search coil tuning or a short circuit in the extension cable, or a fault in the analog board. But the most common error occurs when the last automatic ground balance has been done over a metal target or a void (cavity). In such a case, please manually ground balance once and then re-ground balance automatically. This should fix the issue. If the issue continues, please contact your dealer.

5. I cannot ground balance manually. What’s the explanation for this?
First, there may be a metal object or a void (cavity) where you are trying to ground balance. Please change your location and try re-ground balancing. Second, the sensitivity of the device may be set too high for the soil type and mineralization in the search field. Lower the sensitivity and try again.

6. In which situations do I need to re-ground balance?
When there are visible changes in the ground conditions. For example; moving from soil to rocky or sandy fields, you must refresh your ground balance. In addition, it would be useful to re-ground balance in areas where the mineral numbers on the screen constantly change or if you observe instability in the device.

7. How can I validate the accuracy of a detected target ?
Golden King is developed for deep searching. Therefore, more practice and experience are needed to use it compared to detectors with less depth. It is possible for the device to receive "false" signals in deep ground penetration. False signals may result from heavy ground mineralization, corrosion of metals, surrounding conditions or even wrong usage. To understand whether a signal is false or real; upon detecting a target, move the search coil to the side where you are not getting a signal and press the "Reset" button. Then sweep over the target again. If you do not receive a signal this time, it means that the first signal was false. If you do receive a signal the second time, repeat the above reset process a few times, and if you receive a signal each time, it means that the signal is real.

8. When should I use the reset button?
During your search, the device receives many unnoticeable signals and noise from the ground as well as the surrounding environment. These signals, within time, cause a decrease in the device’s performance and sometimes create false signals. Pressing the reset button often will minimize the amount of false signals and increase device performance.

9. What should I pay attention to when using the reset button ?
The only thing you need to pay attention to is not to press the reset button over a target (metal or void). If you reset over a metal you will receive a false void (cavity) signal, and if you reset over a void you will receive a false metal signal.

10. I get a signal but when I dig, the signal disappears. Why does this happen? ?
There may be a few reasons:

a) The device may have received a false signal if you have searched for a long time and not used the reset button.

b) You may have held the system box close to the search coil and the coil may have detected this or it may have received a false signal from the surrounding environment or from a metal on or near you.

c) You may have detected a corroded metal and since these metals dissolve and get mixed up in the soil during the digging process, you may not have received the same signal again.

d) Metals that have been buried in the ground for a long time create an electromagnetic field around them and this causes a small metal to appear much larger than it actually is to a detector. Metal detectors detect metals at greater depths due to this so-called "halo effect". But keep in mind that once the soil is disturbed upon digging the target, the halo effect is gone and the detector may not detect the small metal anymore.

Above mentioned situations are the most commonly encountered ones. Please practice more with buried targets and get more experienced with your device.

11. I am having an issue with discrimination. What may be the reason?
Improper ground balance, wrong coil sweeping during the confirmation scans, ground noise and electrical interference from the surrounding environment all affect the accuracy of discrimination. What you have to keep in mind here is that discrimination, just like in any other metal detector, may not always be 100% accurate. In addition to the above-mentioned reasons there are many more factors affecting discrimination accuracy. All metals, based on their conductivity, shape, orientation underground, depth and ground mineralization, are sensed differently by a detector. Following the experienced metal detector users' rule of thumb "when in doubt, dig" is the right thing to do.

12. The device classifies gold as steel or alloy. Why is this?
The purity (karat) of gold and even its color plays an important role here. Especially low karat and white gold are alloys and the device may classify them as steel or alloy. It is also possible for the device not to classify a small or a deep weak gold signal as gold. In addition, holding the coil too close to the ground, improper ground balance and negative grounds also affect the accuracy of discrimination. Finally, please keep in mind that it would be unrealistic to expect a metal detector to show the same performance in discrimination as in metal detection. In other words, it is normal for a detector to have very good detection capability but relatively limited capability when it comes to discrimination.

13. Although I have turned off the ferrous setting, the device detects ferrous metals. Why?
The reason is that what you define as ferrous is different than what the device defines as ferrous. Ferrous for Golden King means 100 % iron metals such as rebar, pair of pliers etc. Knives, picks, forks, spoons, and horseshoes are not pure iron; they contain steel. Therefore, even if you turn the ferrous setting off, the device will continue to detect these kinds of objects. In addition, if the metal needle goes all the way up when the ferrous setting is off, it means that the device has reached the saturation point which may indicate the presence of a very large iron object.

14. Sometimes the sensitivity (detection depth) of the device changes. Why does this happen?
There may be different ground conditions in the search field ( ex. going from soil to sandy area). Please re-ground balance. Climate changes may also affect the sensitivity. 15 -25 % change in detection depth between the summer and winter seasons may be observed. This is normal for all types of systems developed for underground searches. If you are experiencing this during air tests, please keep in mind that detection depth will vary based on test material, the surrounding environment, and the intensity of metals around.

15. The depth reading is not accurate. Why is this?
Golden King’s depth reading accuracy totally depends on the sweep speed during the confirmation scans. If the sweep speed is too slow, the depth reading will be greater. If the sweeps are too fast, the depth reading will be less. Ideal sweep speed should be around 3 seconds per 1 meter. To get more accurate depth readings, practice your sweep speed. First, bury a metal object and check its depth. Then, sweep over it at various speeds and determine the speed that gives you the most accurate depth reading and adjust your sweep speed accordingly in your future searches. Please also keep in mind that the depth reading is an estimation. It would be unrealistic to expect 100% accuracy.

16. What is sensitivity?
Sensitivity is the setting that increases and decreases the detection depth of the device. You need to lower the sensitivity in areas where you cannot ground balance or where you get ground noise or electrical interference. In clean soils and environments, you can enable the device to have more detection depth by increasing the sensitivity. After ground balancing automatically or manually, if you lower the sensitivity you don’t need to ground balance again. However, if you increase the sensitivity you must re-ground balance.

17.The device gives a void (cavity) signal although there is no void. Why?
There may be a few reasons for this. The search coil may be too close to the ground or the reset button may have been pressed on a metal. Also, the ground may be highly mineralized. In such a case, lower the sensitivity and re-ground balance. Finally, there may be negative hot rocks in the search ground and these may generate a void signal. In this case, assuming that rocks are smaller than voids, we can consider the possibility of weak and small signals’ indicating rocks and stronger and bigger signals’ indicating voids.

18. The device gives a void (cavity) signal for metals after automatic ground balancing. Why? Automatic ground balancing is designed for starters. In fact, the best performance will be achieved with manual ground balancing. If you are experiencing this issue, please ground balance manually.

19. Sometimes my device does not perform well in void (cavity) detection. What is the explanation for this?
Void detection with a metal detector is not as easy and stable as metal detection. The accuracy of void detection depends on the field conditions. The device takes the ground where you ground balance your device as the reference and classifies the ground changes in the field as metal or void based on the reference ground. However, some voids do not display an obvious change compared to the reference ground. In such a case, the device may not be able to detect even the visible voids (especially open holes). Golden King will detect such voids with about 70% accuracy. Golden King is designed more specifically for the detection of enclosed spaces that have been underground for a long time such as rooms, cellars, caves, tunnels, etc. It will detect these types of voids with almost 100% accuracy. Also, please keep in mind that there may be negative hot rocks in the search ground and these may generate a void signal. In this case, assuming that rocks are smaller than voids, we can consider the possibility of weak and small signals’ indicating rocks and stronger and bigger signals’ indicating voids.

20. The needles in the metal and void (cavity) detection screens are constantly moving. What is the reason for this?
There may be another electronic device operating at the same or close frequency nearby. There could also be a disconnection in one of the coil or system box connectors. Make sure all connectors are properly attached. Also, please don’t forget to use the cable fixer underneath the leather case.

21. What should I pay attention to when digging up the target?
Upon detecting a target, dig a hole 20 cm. deep and check whether there is any metal in the soil you dig out. If there is no metal, expand the hole rectangularly and 50 cm. deep so that the search coil can easily fit inside. Don’t forget to check the soil you dig out again. Then re-ground balance on a spot inside the hole where you are not getting a signal. Then, sweep over the target inside the hole again to see whether you are still getting a signal. As you are getting close to the target, the signal will get stronger and the depth reading will decrease. If not, lower the sensitivity and check the signal again.

22. What should I pay attention to when searching in stony or rocky areas?
Searching in such areas is generally a challenge for metal detectors. If there are big enough rocks to walk on in the field, try ground balancing over one of these rocks and search that way. If there are various sizes of stones, small and large, lowering the sensitivity to 50-60 and ground balancing manually is recommended. Also, turning the ferrous setting off may also help.

23.What should I do in areas with heavy mineralization?
Lower the sensitivity and ground balance manually. Also, turn off the ferrous setting. This will help minimize the effect of high mineralization on the device.

24. The device does not detect metals or it has very little detection depth in air tests. Why?
Some users air test the device with chains or small metals such as ring or earrings. First thing you should know is that metal detectors cannot detect chains that consist of many individual links or they can only detect them weakly. Therefore, Golden King cannot detect chains either. As far as the small metals go, Golden King is designed as a deep penetrating treasure detector, ideal for deeper and larger metals. Golden King will not detect coins or small metals or it will detect them at little depths. This is totally normal based on its design purpose. It is hard to compare the Golden King to a coin detector with less depth. It’s like comparing an apple to an orange. If you are looking for a coin and small metal detector, please check our other models on our web site.

25.Nothing comes up on the screen when i turn on the device. What should I do?
Please check your battery and make sure it is charged. If you are sure the battery well-charged, please contact your dealer.

26. Can I use my device at home or work?
Because Golden King is a deep penetrating device, it may detect the rebar inside walls and ceilings as well as other metal objects around. Therefore, it is not suitable for use at home or work.



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Nokta Metal Detectors reserves the right to change the design, specifications or accessories without notice and without any obligation or liability whatsoever.