Fors CoRe FAQs

1. I cannot ground balance. Why?
There may be a few reasons for this:
A) You may be ground balancing over a metal. Change your location and re-try.
B) You may be on a ground with high iron mineralization. These types of ground are beyond the device's automatic ground balancing range. Only the Conductive Ground (COG) mode will allow ground balancing on such ground. Therefore, you can select the COG mode and re-try or ground balance manually.
C) You may be on a highly mineralized ground with metal effect. In such a case, if you cannot ground balance automatically or manually including the COG mode, you need to continue searching without ground balancing. Turn off and on the device again and set the search mode to Discrimination 3 (DI3) or Discrimination 2 (DI2) (adjust sensitivity accordingly) and increase the ID Masking to a level where the noise is eliminated.
D) If the ground mineralization is too low, the automatic ground balance may not work. In this case, if the ground effect can be felt in the General Search (GEN) mode, manual ground balancing can work. If the ground effect cannot be felt, you can set it to 60.

2. What shall I do in areas with many hot rocks? We recommend you to use the DI2 or the DI3 modes and ground balance even though you can search without ground balancing. The device may emit false signals when the search coil passes over some rocks. If you get a metal signal, check the signal's continuity. If the signal is not confined to a certain spot or if the signal is only one-way when you sweep the search coil, it may be a hot rock.

3. How can I tell whether the signal is a hot rock or not?
Hot rocks are classified as negative or positive based on their ID being low or high in comparison to the ID of the soil they are in. Positive hot rocks act and sound just like metals. In the General Search mode, when you sweep the search coil over them, they tend to give a short ''zip zip'' sound. If the signal is strong enough, the device may also give an ID for these rocks but the ID will be low within the 0-10 range. In discrimination modes, positive hot rocks will give a typical metal sound again but generally users will not hear these sounds because of ID masking.
Negative hot rocks, on the other hand, tend to give a longer ''boing'' sound when the search coil is swept over them. The device will not give an ID for these rocks regardless of the signal strength or will rarely give an ID between 95-99. Negative hot rocks will not give any sound in discrimination modes (except for occasional false signals ).

4. My device is receiving a lot of noise in the General Search (GEN) mode. Why is that?
There may be a few reasons for the device to receive noise: If you have not ground balanced, the device may be receiving ground noise. In such a case, ground balance and check if the noise is still there. Another way to understand whether the device is receiving ground noise or not is to hold the device up in the air and check whether the noise is gone. If the noise is gone, it means that the noise was coming from the ground. If the noise continues, it may be due to one of the reasons listed below:
High sensitivity and threshold settings: Increasing sensitivity and threshold settings at the same time may cause the device to receive noise. First increase the sensitivity setting to the highest level where there are no popping sounds. Then increase threshold slowly to a level where you can still hear the small targets in the background sound. High threshold levels will make you miss smaller targets. Electromagnetic interference: Lower sensitivity.
Operation of another detector or a device within the same frequency range nearby: Change your location or change the frequency of the device if necessary.

5. My device is receiving a lot of noise in the DI2 mode. What is the reason?
Ground noise, hot rocks or high sensitivity setting may cause this. Discrimination 2 (DI2) mode is designed for highly mineralized ground and for areas with many hot rocks in close proximity. Ground balancing is necessary for the DI2 mode to work properly. When ground balance value is over 90, the device may receive noise from the ground or hot rocks. In the DI2 mode, a high sensitivity setting will cause the ground or environmental noise to be heard more strongly. Please keep this in mind, when adjusting sensitivity.

6. There are many other detectors in the search field. What should I do?
Operation of many detectors in close proximity to each other may cause noise. In such a case, you may have to change the frequency of the device. Normally, the frequency setting is not enabled and it is grayed out in the menu. To activate it, while holding the pinpoint button pressed, press one of the up/down/+/- switches. Then, you can select the frequency option in the menu and change it.
IMPORTANT! Frequency shifting may affect the performance of the device. Therefore, it is recommended that you do not change the frequency unless necessary and keep it at the factory default.

7. I constantly get an iron tone. What shall I do?
The search field contains a lot of iron minerals or heavy trash. You can eliminate the iron tone by setting the ID Masking value according to the target ID of the iron.

8. If I set the ID Masking to the level where iron is eliminated, do I lose depth?
You will experience depth loss in metal alloys which generate a mixed signal of non-ferrous and iron.

9. Is the target depth given by the device in the pinpoint mode accurate?
Depth reading, just like in most detectors, is provided based on the assumption that the target is a typical modern coin. The real depth will vary based on target size. The device will give a greater depth reading for smaller targets and for larger targets, the depth reading will be smaller than they really are. In fact, pinpointing is used for target location and not depth indication. Therefore, we suggest that you use the depth reading for judging the proximity of the target.

10. What are false signals and what causes them?
Sometimes the device may receive signals although there is no real target. There are a few different causes for this. Most common ones are ground mineralization or hot rocks, electromagnetic interference in the surrounding environment, operation of another detector nearby, rusty iron and corroded foil, and sensitivity and threshold set too high. False signals generally are not confined to a certain spot and they are not continuous. False signals due to high mineralization mostly result from iron oxides. On such ground, the Magnetic Mineralization reading on screen will probably be very high. Ground balancing frequently, using the Discrimination 2 (DI2) mode and lowering sensitivity will help minimize false signals.

11. Can I search without using the headphones? Why is headphone usage important?
Headphones help minimize ambient noise such as winds, waves, cars etc. Minimizing ambient noise and hearing the detector's sound only will simplify target detection and pinpointing. Headphones are essential especially in detecting smaller metals. When you clearly hear the sounds through the headphones, you can detect good targets and differentiate trash more easily which will save you digging time as well. In addition, headphone usage will prolong battery life.

12. How is the sensitivity setting adjusted?
The device comes with the ideal sensitivity setting. Sensitivity, most of the time, is adjusted unnecessarily high by users for obtaining more depth. In reality, there are many environmental factors affecting sensitivity. Factors such as high ground mineralization, radio stations and power lines in the surrounding area or other electromagnetic signals affect the level of sensitivity. The most ideal setting is where you don't get any interference and hear popping sounds.

13. What shall I pay attention to when using Ground Tracking?
For better performance, we recommend you to use Ground Tracking in the General Search mode. When the device is in GEN mode and the Ground Tracking is on, ground balancing will be updated automatically all the time. If you are looking for smaller metals, Ground Tracking is not suitable because the device will try to ground balance the signals of these small targets which may result in depth loss. In addition, if you use Ground Tracking in areas where hot rocks are intensely present, the device may not be able to eliminate these high mineralized rocks or you may miss the smaller or deeper metals. When Ground Tracking is active, the device may emit a loud audible signal if the ground conditions change (for example a hot rock) or if a target is encountered. In such a case, sweep the search coil a few times over the spot where you receive the signal. If the sound continues and the device gives an ID, there is a high chance that it is a target. If the sound gets weaker or disappears after a few sweeps, it means that that the device gave a signal for the ground change or the hot rocks. When air testing, be sure that Ground Tracking is off. Otherwise, the device will try to ground balance over the target and lose depth.

14. How can I use my device at maximum sensitivity?
This is a frequently asked and not a well-understood subject by most users. Ground and environmental conditions are the leading factors affecting sensitivity. When conditions allow, you can use your device at maximum sensitivity meaning maximum depth but please note that depth depends on a lot of factors:
Metal size (not the weight but the size of the surface seen from above by the detector), type of metal, ground conductivity and mineralization, how long the metal has been buried underground, shape and even the orientation of the metal.
*High ground mineralization affects depth considerably. Because ground minerals vary greatly, you may have to re-ground balance your detector frequently or decrease sensitivity.
*Various chemicals in the ground have corrosive effects on metals. Some metals corrode faster than others. Modern zinc coins corrode fast whereas copper and silver get affected less. Gold on the other hand barely gets affected, if at all. These chemicals eat away at the metal which cause oxidation (rusting). Rust then is absorbed into the surrounding soil. This causes the soil to become more conductive, which in turn makes the metallic object appear larger than it actually is. As a result of this, also known as the "Halo Effect", detectors detect metals at greater depths.
*The larger the metal, the easier and deeper it can be detected. For example, a bucket can be detected much easier and deeper compared to a single coin.
*The shape and orientation of metals underground are also important factors on depth. Metals act like antennas radiating part of the signal transmitted by a detector. Round objects lying flat produce the best results. Flat objects are also easy to detect. Rod-shaped items, on the other hand, are very difficult to detect..

15. How is ID Masking used?
Target ID is a 2-digit number produced by the detector and it gives you an idea about what the target may be. The number is displayed both on the LCD panel and the numeric display on the handle. ID Masking is the ability of the device to ignore (not produce a warning tone or ID) unwanted targets. As the ID Masking value increases, ground mineralization, small trash metals, pull-tabs, small nails, folio, gold rings and some coins will be ignored in order by the detector. Therefore, it is important to check the IDs of certain targets before using the device. Please keep in mind that with a high ID Masking value, many non-ferrous metals will be rejected. When you set the ID Masking to 35, the device will reject ground minerals, iron and trash metals and will detect alloy metals, non-ferrous and gold targets.

You can easily use your device on wet beach sand by using the Conductive Ground (COG) mode and automatically ground balancing. This is the special mode of FORS CoRe designed for conductive ground (wet beach sand, alkali sand etc.). What is special about this mode is that it will not react to iron or similar targets within the same range and that the device will ground balance easily on all types of ground. Another way is to use the DI2 or DI3 mode, ground balance manually and to increase the ID Masking value until the iron tone is eliminated.

17. Can I search on dry beach sand with my device?
All the modes can be used when searching on dry beach sand.

18. Can I submerge the device in water?
FORS CoRe search coils are all waterproof so you can submerge the coils and the shaft up to the handle in water but you should not get the system box or the handle wet.

19. What should I pay attention to when searching on the beach?
You can get metal signals when you sweep the search coil over the holes you dig on wet beach sand, this is normal. Don't forget the check the sand you dig out for targets. The search coil may give false signals when going into and coming out of the water so please try to keep the coil either in or out of the water.
The salt and mineral levels especially in wet beach sand may change as you change your spot so ground balancing frequently during prolonged searches may increase the device performance.

Fors Gold FAQs

1. I cannot ground balance. Why?
There may be a few reasons for this:
A) You may be ground balancing over a metal. Change your location and re-try.
B) You may be on a ground with high iron mineralization. These types of ground are beyond the device's automatic ground balancing range. In such a case, ground balance manually.
C) You may be on a highly mineralized ground with metal effect. In such a case, if you cannot ground balance automatically or manually, you need to continue searching without ground balancing. Turn off and on the device again and set the search mode to Discrimination 3 (DI3) or Boost (BST) (adjust sensitivity accordingly) and increase the ID Masking to a level where the noise is eliminated.
D) If the ground mineralization is too low, the automatic ground balance may not work. In this case, if the ground effect can be felt in the General Search (GEN) mode, manual ground balancing can work. If the ground effect cannot be felt, you can set it to 60.

2. What shall I do in areas with many hot rocks?
We recommend you to use the BST or the DI3 modes and ground balance even though you can search without ground balancing. The device may emit false signals when the search coil passes over some rocks. If you get a metal signal, check the signal's continuity. If the signal is not confined to a certain spot or if the signal is only one-way when you sweep the search coil, it may be a hot rock.

3. How can I tell whether the signal is a hot rock or not?
Hot rocks are classified as negative or positive based on their ID being low or high in comparison to the ID of the soil they are in. Positive hot rocks act and sound just like metals. In the General Search mode, when you sweep the search coil over them, they tend to give a short ''zip zip'' sound. If the signal is strong enough, the device may also give an ID for these rocks but the ID will be low within the 0-10 range. In discrimination modes, positive hot rocks will give a typical metal sound again but generally users will not hear these sounds because of ID masking.
Negative hot rocks, on the other hand, tend to give a longer ''boing'' sound when the search coil is swept over them. The device will not give an ID for these rocks regardless of the signal strength or will rarely give an ID between 95-99. Negative hot rocks will not give any sound in discrimination modes (except for occasional false signals ).

4. My device is receiving a lot of noise in the General Search (GEN) mode. Why is that?
There may be a few reasons for the device to receive noise: If you have not ground balanced, the device may be receiving ground noise. In such a case, ground balance and check if the noise is still there. Another way to understand whether the device is receiving ground noise or not is to hold the device up in the air and check whether the noise is gone. If the noise is gone, it means that the noise was coming from the ground. If the noise continues, it may be due to one of the reasons listed below:
High sensitivity and threshold settings: Increasing sensitivity and threshold settings at the same time may cause the device to receive noise. First increase the sensitivity setting to the highest level where there are no popping sounds. Then increase threshold slowly to a level where you can still hear the small targets in the background sound. High threshold levels will make you miss smaller targets.
Electromagnetic interference: Lower sensitivity. Operation of another detector or a device within the same frequency range nearby: Change your location or change the frequency of the device if necessary.

5. My device is receiving a lot of noise in the BOOST (BST) mode. What is the reason?
Ground noise, hot rocks or high sensitivity setting may cause this. BOOST (BST) mode is designed for highly mineralized ground and for areas with many hot rocks in close proximity. Ground balancing is necessary for the BST mode to work properly. When ground balance value is over 90, the device may receive noise from the ground or hot rocks. In the BST mode, a high sensitivity setting will cause the ground or environmental noise to be heard more strongly. Please keep this in mind, when adjusting sensitivity.

6. There are many other detectors in the search field. What should I do? Operation of many detectors in close proximity to each other may cause noise. In such a case, you may have to change the frequency of the device. Normally, the frequency setting is not enabled and it is grayed out in the menu. To activate it, while holding the pinpoint button pressed, press one of the up/down/+/- switches. Then, you can select the frequency option in the menu and change it.
IMPORTANT! Frequency shifting may affect the performance of the device. Therefore, it is recommended that you do not change the frequency unless necessary and keep it at the factory default.

7. I constantly get an iron tone. What shall I do?
The search field contains a lot of iron minerals or heavy trash. You can eliminate the iron tone by setting the ID Masking value according to the target ID of the iron.

8. If I set the ID Masking to the level where iron is eliminated, do I lose depth?
You will experience depth loss in metal alloys which generate a mixed signal of non-ferrous and iron.

9. Is the target depth given by the device in the pinpoint mode accurate?
Depth reading, just like in most detectors, is provided based on the assumption that the target is a typical modern coin. The real depth will vary based on target size. The device will give a greater depth reading for smaller targets and for larger targets, the depth reading will be smaller than they really are. In fact, pinpointing is used for target location and not depth indication. Therefore, we suggest that you use the depth reading for judging the proximity of the target.

10. What are false signals and what causes them?
Sometimes the device may receive signals although there is no real target. There are a few different causes for this. Most common ones are ground mineralization or hot rocks, electromagnetic interference in the surrounding environment, operation of another detector nearby, rusty iron and corroded foil, and sensitivity and threshold set too high.
False signals generally are not confined to a certain spot and they are not continuous. False signals due to high mineralization mostly result from iron oxides. On such ground, the Magnetic Mineralization reading on screen will probably be very high. Ground balancing frequently, using the BOOST (BST) mode and lowering sensitivity will help minimize false signals.

11. Can I search without using the headphones? Why is headphone usage important?
Headphones help minimize ambient noise such as winds, waves, cars etc. Minimizing ambient noise and hearing the detector's sound only will simplify target detection and pinpointing. Headphones are essential especially in detecting smaller metals. When you clearly hear the sounds through the headphones, you can detect good targets and differentiate trash more easily which will save you digging time as well. In addition, headphone usage will prolong battery life.

12. How is the sensitivity setting adjusted?
The device comes with the ideal sensitivity setting. Sensitivity, most of the time, is adjusted unnecessarily high by users for obtaining more depth. In reality, there are many environmental factors affecting sensitivity. Factors such as high ground mineralization, radio stations and power lines in the surrounding area or other electromagnetic signals affect the level of sensitivity. The most ideal setting is where you don't get any interference and hear popping sounds.

13. What shall I pay attention to when using Ground Tracking? For better performance, we recommend you to use Ground Tracking in the General Search mode. When the device is in GEN mode and the Ground Tracking is on, ground balancing will be updated automatically all the time. If you are looking for gold nuggets or smaller metals, Ground Tracking is not suitable because the device will try to ground balance the signals of these small targets which may result in depth loss. In addition, if you use Ground Tracking in areas where hot rocks are intensely present (such as some gold fields), the device may not be able to eliminate these high mineralized rocks or you may miss the smaller or deeper metals (such as gold nuggets). When Ground Tracking is active, the device may emit a loud audible signal if the ground conditions change (for example a hot rock) or if a target is encountered. In such a case, sweep the search coil a few times over the spot where you receive the signal. If the sound continues and the device gives an ID, there is a high chance that it is a target. If the sound gets weaker or disappears after a few sweeps, it means that that the device gave a signal for the ground change or the hot rocks. When air testing, be sure that Ground Tracking is off. Otherwise, the device will try to ground balance over the target and lose depth.

14. How can I use my device at maximum sensitivity?
This is a frequently asked and not a well-understood subject by most users. Ground and environmental conditions are the leading factors affecting sensitivity. When conditions allow, you can use your device at maximum sensitivity meaning maximum depth but please note that depth depends on a lot of factors: Metal size (not the weight but the size of the surface seen from above by the detector), type of metal, ground conductivity and mineralization, how long the metal has been buried underground, shape and even the orientation of the metal.
* High ground mineralization affects depth considerably. Because ground minerals vary greatly, you may have to re-ground balance your detector frequently or decrease sensitivity.
* Various chemicals in the ground have corrosive effects on metals. Some metals corrode faster than others. Modern zinc coins corrode fast whereas copper and silver get affected less. Gold on the other hand barely gets affected, if at all. These chemicals eat away at the metal which cause oxidation (rusting). Rust then is absorbed into the surrounding soil. This causes the soil to become more conductive, which in turn makes the metallic object appear larger than it actually is. As a result of this, also known as the "Halo Effect", detectors detect metals at greater depths.
* The larger the metal, the easier and deeper it can be detected. For example, a bucket can be detected much easier and deeper compared to a single coin.
* The shape and orientation of metals underground are also important factors on depth. Metals act like antennas radiating part of the signal transmitted by a detector. Round objects lying flat produce the best results. Flat objects are also easy to detect. Rod-shaped items, on the other hand, are very difficult to detect.

15. How is ID Masking used?
Target ID is a 2-digit number produced by the detector and it gives you an idea about what the target may be. The number is displayed both on the LCD panel and the numeric display on the handle. ID Masking is the ability of the device to ignore (not produce a warning tone or ID) unwanted targets. As the ID Masking value increases, ground mineralization, small trash metals, pull-tabs, small nails, folio, gold rings and some coins will be ignored in order by the detector. Therefore, it is important to check the IDs of certain targets before using the device. Please keep in mind that with a high ID Masking value, many non-ferrous metals will be rejected. When you set the ID Masking to 35, the device will reject ground minerals, iron and trash metals and will detect alloy metals, non-ferrous and gold targets.

Velox One FAQs

1. I CANNOT GROUND BALANCE MY DEVICE. I TURN THE GROUND BALANCE KNOB TO MAXIMUM (10), DROP SENSITIVITY TO HALF-WAY BUT NO SUCCESS. WHY?
You cannot ground balance because the ground you are on has high iron mineralization. First, turn the GB knob to the ideal level 6 -7 and sensitivity to maximum. Then, turn the Iron Disc. to either FS (Factory Setting) or to maximum (10). If there is still ground noise, set the device to Mineral 1 mode. If the noise continues, try Mineral 2 or 3 modes respectively.

2. MY DEVICE GROUND BALANCES AT LEVEL 8. WHAT SHOULD I DO?
You can search this way but you should keep in mind that as you turn the ground balance setting towards the maximum (10), the device will start losing depth for some non-ferrous metals except for gold. If you are looking for non-ferrous metals such as silver, copper, bronze, brass etc. it is recommended that you leave the GB knob at the ideal level 6-7 and then gradually lower sensitivity to eliminate noise. When searching for gold or iron, the level of the GB setting will not affect depth so you can turn the GB knob towards the maximum if needed instead of lowering sensitivity.

3. ALTHOUGH THE IRON SWITCH IS OFF, THE DEVICE GIVES A WARNING TONE WHEN IT DETECTS A FERROUS METAL. WHY?
Even though we can eliminate iron with the iron switch, it is harder to eliminate certain ferrous metals. In such a case, turn the iron disc. knob to FS or 10 position. If the device is still producing a warning tone for ferrous-metals, try Mineral 1,2 or 3 modes respectively.

4. THE DEVICE RECEIVES A LOT OF NOISE DURING SEARCHING. WHAT SHOULD I DO?
If the ground balance is at the ideal level of 6-7, first try eliminating the noise by lowering the sensitivity. If you lose too much depth, it means that the ground you are on has high mineralization. In such a case, you can eliminate the noise by using the mineral modes (Mineral 1,2 or 3).

5. WHAT SHOULD I DO TO DETECT METALS AT DEPTH LIMITS?
Switching the signal audio boost to position3 will help boost the sound of weak signals received from small or deep metals making it easier for you to detect those uncertain targets. Signal audio boost does not increase depth. Please note that signal audio boost should be used on a temporary or as-needed basis because it will not only boost the target signal audio but it will also boost the loudness of ground noise and false signals. Therefore, it is recommended to keep the switch at position 1 and turn it to position 2 or 3 only when you want to verify a weak metal signal and then turn it off again.

6. THE VOLUME IS TOO HIGH. WHAT SHOULD I DO?
You can either decrease the volume using the volume knob located at the back of the device or use the headphones supplied with your device.

7.THERE IS NOISE - OTHER THAN TARGET SIGNAL OR INTERFERENCE-COMING FROM THE DEVICE. WHAT SHOULD I DO?
You may not have tightened the shaft completely during assembly. Check the shaft and the connection points.

8. MY DEVICE PRODUCES A HIGH, GOLD OR NON-FERROUS TONE FOR ALL METALS INCLUDING IRON. WHY?
The iron disc. may be turned on (between 1-4). Check the click noise indicating that you are off the FS (Factory Setting). Discrimination starts at about level 4 - 6. In other words, below this level, all metals including iron will produce a non-ferrous (high) tone.

9. AT WHAT SETTINGS WILL THE DEVICE WORK AT ITS BEST PERFORMANCE (DEPTH)?
Sensitivity should be at maximum, signal audio boost at 3 and iron disc. between 1-4 (no metal discrimination). At these settings, the device will work at its maximum depth.

10. WHAT ARE THE IDEAL SETTINGS WHEN SEARCHING IN HIGH MINERALIZATION AND WET BEACH SAND?
Ideal settings are iron switch off and iron disc. at FS or 10. If the device is still receiving noise, you may use one of the Mineral 1,2 or 3 modes.

11. HOW WILL I DECIDE WHETHER THE GROUND I AM ON HAS IRON MINERALIZATION OR NOT?
First, you will not be able to ground balance. Even if you lower sensitivity, the device will continue to receive ground noise. In such a case, check the iron switch and turn it on if it is off and listen to the ground noise. If the noise is a low ferrous tone we can say that the ground is iron mineralized.

Golden King DPR Plus FAQs

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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.

Golden King NGR FAQs

Select Language:

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.

Golden Sense FAQs

1. I CANNOT GROUND BALANCE MY DEVICE. WHY?
If you cannot ground balance even though you have lowered the sensitivity it means that the ground you are on has high iron mineralization. In such areas, turn the GB knob to the ideal level 6 -7 and use ‘’IRON OFF’ mode. (Applicable for devices with serial numbers greater than 502-3335)

2. WHAT SHALL I DO IF I AM SEARCHING FOR GOLD ONLY?
Turn Ground Balance to maximum and select the ‘’IRON OFF’ mode.

3. WHEN DETECTING CERTAIN METALS, BOTH THE GOLD/NON-FERROUS AND FERROUS LEDs LIGHT UP ON THE HANDLE. WHY?
Both LEDs may light up in case of steel or alloy detection.

4. CAN I SEARCH ON WET BEACH SAND?
Yes, you can. Turn the Ground Balance to 6-7 and select the ‘’IRON OFF’’ mode. You may leave the sensitivity at maximum.

5. CAN I SEARCH ON DRY BEACH SAND?
Yes, you can. Turn on the device in ALL METAL or DISC. mode. Turn the Ground Balance to 6-7. If the device is still getting noise, you can lower sensitivity in small increments until the device is silent and start searching.

6. SOMETIMES THE LEDs DO NOT LIGHT UP WHEN METAL IS DETECTED. WHY?
When metals at depth limits (maximum depths) are detected you will only get an audio warning. As the signal gets stronger, the LEDs will light up as well.

7. CAN I SEARCH WITH MAXIMUM GROUND BALANCE SETTING?
You can search this way but you may experience depth loss for some non-ferrous metals such as silver, bronze, aluminum etc.

8. HOW CAN I TELL IF A DETECTED TARGET IS CLOSE TO THE SURFACE OR BURIED DEEPER?
For deeper targets the device will produce a weaker and shorter tone. For shallower targets the warning tone will be longer and clearer.

9. HOW CAN I TELL THE SIZE OF A DETECTED TARGET?
When you sweep the coil over the target, if you are getting a short signal, it means that the target is either very deep or it is a small target close to the surface. If the coil receives a long signal, it means that the target is a large one.

10. HOW CAN I PINPOINT?
When you detect a target, approach it from four directions and mark the spots where you initially hear the signals. The object is located in between the spots. You may also use our RS PINPOINTER during the digging process and reach the target very quickly.

11. WHAT SHALL I DO WHEN THERE IS TOO MUCH NOISE AND INTERFERENCE?
You may search with the background noise or you may eliminate interference completely by gradually lowering sensitivity and search that way.

12. SHORTLY AFTER GROUND BALANCING THE DEVICE START SEARCHING, THE DEVICE STARTS TO RECEIVE NOISE. WHAT SHALL I DO ?
The ground effect where you balanced the device and where you started to receive noise is different. It is normal for a detector receive noise on changing ground conditions. The right thing to do in such a case is re-ground balancing. When needed, sensitivity may be lowered in small increments, too.

13.THERE ARE MANY MINERALIZED ROCKS IN THE SEARCH FIELD. WHAT SHALL I DO?
What you need to do in such areas is to ground balance over one of these rocks. When needed, sensitivity may be lowered in small increments, too.

Fors Tech FAQs

1. I cannot ground balance. Why?
There may be a few reasons for this:
A) You may be ground balancing over a metal. Change your location and re-try.
B) You may be on a ground with high iron mineralization. These types of ground are beyond the device's automatic ground balancing range. Only the Conductive Ground (COG) mode will allow ground balancing on such ground. Therefore, you can select the COG mode and re-try or ground balance manually.
C) You may be on a highly mineralized ground with metal effect. In such a case, if you cannot ground balance automatically or manually including the COG mode, you need to continue searching without ground balancing. Turn off and on the device again and set the search mode to Discrimination 3 (DI3) or Discrimination 2 (DI2) (adjust sensitivity accordingly) and increase the ID Masking to a level where the noise is eliminated.
D) If the ground mineralization is too low, the automatic ground balance may not work. In this case, if the ground effect can be felt in the General Search (GEN) mode, manual ground balancing can work. If the ground effect cannot be felt, you can set it to 60.

2. What shall I do in areas with many hot rocks? We recommend you to use the DI2 or the DI3 modes and ground balance even though you can search without ground balancing. The device may emit false signals when the search coil passes over some rocks. If you get a metal signal, check the signal's continuity. If the signal is not confined to a certain spot or if the signal is only one-way when you sweep the search coil, it may be a hot rock.

3. How can I tell whether the signal is a hot rock or not?
Hot rocks are classified as negative or positive based on their ID being low or high in comparison to the ID of the soil they are in. Positive hot rocks act and sound just like metals. In the General Search mode, when you sweep the search coil over them, they tend to give a short ''zip zip'' sound. If the signal is strong enough, the device may also give an ID for these rocks but the ID will be low within the 0-10 range. In discrimination modes, positive hot rocks will give a typical metal sound again but generally users will not hear these sounds because of ID masking.
Negative hot rocks, on the other hand, tend to give a longer ''boing'' sound when the search coil is swept over them. The device will not give an ID for these rocks regardless of the signal strength or will rarely give an ID between 95-99. Negative hot rocks will not give any sound in discrimination modes (except for occasional false signals ).

4. My device is receiving a lot of noise in the General Search (GEN) mode. Why is that?
There may be a few reasons for the device to receive noise: If you have not ground balanced, the device may be receiving ground noise. In such a case, ground balance and check if the noise is still there. Another way to understand whether the device is receiving ground noise or not is to hold the device up in the air and check whether the noise is gone. If the noise is gone, it means that the noise was coming from the ground. If the noise continues, it may be due to one of the reasons listed below:
High sensitivity and threshold settings: Increasing sensitivity and threshold settings at the same time may cause the device to receive noise. First increase the sensitivity setting to the highest level where there are no popping sounds. Then increase threshold slowly to a level where you can still hear the small targets in the background sound. High threshold levels will make you miss smaller targets. Electromagnetic interference: Lower sensitivity.
Operation of another detector or a device within the same frequency range nearby: Change your location or change the frequency of the device if necessary.

5. My device is receiving a lot of noise in the DI2 mode. What is the reason?
Ground noise, hot rocks or high sensitivity setting may cause this. Discrimination 2 (DI2) mode is designed for highly mineralized ground and for areas with many hot rocks in close proximity. Ground balancing is necessary for the DI2 mode to work properly. When ground balance value is over 90, the device may receive noise from the ground or hot rocks. In the DI2 mode, a high sensitivity setting will cause the ground or environmental noise to be heard more strongly. Please keep this in mind, when adjusting sensitivity.

6. There are many other detectors in the search field. What should I do?
Operation of many detectors in close proximity to each other may cause noise. In such a case, you may have to change the frequency of the device. Normally, the frequency setting is not enabled and it is grayed out in the menu. To activate it, while holding the pinpoint button pressed, press one of the up/down/+/- switches. Then, you can select the frequency option in the menu and change it.
IMPORTANT! Frequency shifting may affect the performance of the device. Therefore, it is recommended that you do not change the frequency unless necessary and keep it at the factory default.

7. I constantly get an iron tone. What shall I do?
The search field contains a lot of iron minerals or heavy trash. You can eliminate the iron tone by setting the ID Masking value according to the target ID of the iron.

8. If I set the ID Masking to the level where iron is eliminated, do I lose depth?
You will experience depth loss in metal alloys which generate a mixed signal of non-ferrous and iron.

9. Is the target depth given by the device in the pinpoint mode accurate?
Depth reading, just like in most detectors, is provided based on the assumption that the target is a typical modern coin. The real depth will vary based on target size. The device will give a greater depth reading for smaller targets and for larger targets, the depth reading will be smaller than they really are. In fact, pinpointing is used for target location and not depth indication. Therefore, we suggest that you use the depth reading for judging the proximity of the target.

10. What are false signals and what causes them?
Sometimes the device may receive signals although there is no real target. There are a few different causes for this. Most common ones are ground mineralization or hot rocks, electromagnetic interference in the surrounding environment, operation of another detector nearby, rusty iron and corroded foil, and sensitivity and threshold set too high. False signals generally are not confined to a certain spot and they are not continuous. False signals due to high mineralization mostly result from iron oxides. On such ground, the Magnetic Mineralization reading on screen will probably be very high. Ground balancing frequently, using the Discrimination 2 (DI2) mode and lowering sensitivity will help minimize false signals.

11. Can I search without using the headphones? Why is headphone usage important?
Headphones help minimize ambient noise such as winds, waves, cars etc. Minimizing ambient noise and hearing the detector's sound only will simplify target detection and pinpointing. Headphones are essential especially in detecting smaller metals. When you clearly hear the sounds through the headphones, you can detect good targets and differentiate trash more easily which will save you digging time as well. In addition, headphone usage will prolong battery life.

12. How is the sensitivity setting adjusted?
The device comes with the ideal sensitivity setting. Sensitivity, most of the time, is adjusted unnecessarily high by users for obtaining more depth. In reality, there are many environmental factors affecting sensitivity. Factors such as high ground mineralization, radio stations and power lines in the surrounding area or other electromagnetic signals affect the level of sensitivity. The most ideal setting is where you don't get any interference and hear popping sounds.

13. What shall I pay attention to when using Ground Tracking?
For better performance, we recommend you to use Ground Tracking in the General Search mode. When the device is in GEN mode and the Ground Tracking is on, ground balancing will be updated automatically all the time. If you are looking for smaller metals, Ground Tracking is not suitable because the device will try to ground balance the signals of these small targets which may result in depth loss. In addition, if you use Ground Tracking in areas where hot rocks are intensely present, the device may not be able to eliminate these high mineralized rocks or you may miss the smaller or deeper metals. When Ground Tracking is active, the device may emit a loud audible signal if the ground conditions change (for example a hot rock) or if a target is encountered. In such a case, sweep the search coil a few times over the spot where you receive the signal. If the sound continues and the device gives an ID, there is a high chance that it is a target. If the sound gets weaker or disappears after a few sweeps, it means that that the device gave a signal for the ground change or the hot rocks. When air testing, be sure that Ground Tracking is off. Otherwise, the device will try to ground balance over the target and lose depth.

14. How can I use my device at maximum sensitivity?
This is a frequently asked and not a well-understood subject by most users. Ground and environmental conditions are the leading factors affecting sensitivity. When conditions allow, you can use your device at maximum sensitivity meaning maximum depth but please note that depth depends on a lot of factors:
Metal size (not the weight but the size of the surface seen from above by the detector), type of metal, ground conductivity and mineralization, how long the metal has been buried underground, shape and even the orientation of the metal.
*High ground mineralization affects depth considerably. Because ground minerals vary greatly, you may have to re-ground balance your detector frequently or decrease sensitivity.
*Various chemicals in the ground have corrosive effects on metals. Some metals corrode faster than others. Modern zinc coins corrode fast whereas copper and silver get affected less. Gold on the other hand barely gets affected, if at all. These chemicals eat away at the metal which cause oxidation (rusting). Rust then is absorbed into the surrounding soil. This causes the soil to become more conductive, which in turn makes the metallic object appear larger than it actually is. As a result of this, also known as the "Halo Effect", detectors detect metals at greater depths.
*The larger the metal, the easier and deeper it can be detected. For example, a bucket can be detected much easier and deeper compared to a single coin.
*The shape and orientation of metals underground are also important factors on depth. Metals act like antennas radiating part of the signal transmitted by a detector. Round objects lying flat produce the best results. Flat objects are also easy to detect. Rod-shaped items, on the other hand, are very difficult to detect..

15. How is ID Masking used?
Target ID is a 2-digit number produced by the detector and it gives you an idea about what the target may be. The number is displayed both on the LCD panel and the numeric display on the handle. ID Masking is the ability of the device to ignore (not produce a warning tone or ID) unwanted targets. As the ID Masking value increases, ground mineralization, small trash metals, pull-tabs, small nails, folio, gold rings and some coins will be ignored in order by the detector. Therefore, it is important to check the IDs of certain targets before using the device. Please keep in mind that with a high ID Masking value, many non-ferrous metals will be rejected. When you set the ID Masking to 35, the device will reject ground minerals, iron and trash metals and will detect alloy metals, non-ferrous and gold targets.

You can easily use your device on wet beach sand by using the Conductive Ground (COG) mode and automatically ground balancing. This is the special mode of FORS CoRe designed for conductive ground (wet beach sand, alkali sand etc.). What is special about this mode is that it will not react to iron or similar targets within the same range and that the device will ground balance easily on all types of ground. Another way is to use the DI2 or DI3 mode, ground balance manually and to increase the ID Masking value until the iron tone is eliminated.

17. Can I search on dry beach sand with my device?
All the modes can be used when searching on dry beach sand.

18. Can I submerge the device in water?
FORS CoRe search coils are all waterproof so you can submerge the coils and the shaft up to the handle in water but you should not get the system box or the handle wet.

19. What should I pay attention to when searching on the beach?
You can get metal signals when you sweep the search coil over the holes you dig on wet beach sand, this is normal. Don't forget the check the sand you dig out for targets. The search coil may give false signals when going into and coming out of the water so please try to keep the coil either in or out of the water.
The salt and mineral levels especially in wet beach sand may change as you change your spot so ground balancing frequently during prolonged searches may increase the device performance.

20. How will the device react to long metals such as underground pipes?
It will react in two different ways. If the search coil is swept over the width of a pipe, an uninterrupted and long signal, like a large metal signal, will be received. If it is swept over the length of the pipe, the signal will be intermittent. First a long signal will be heard, then no signal, and then a long signal again.

21. When detecting metals inside walls, which settings should I use?
Choose any search mode, set the sensitivity at minimum levels and pinpoint. Because pinpointing is a non-motion mode, you should sweep the search coil slowly. What you should pay attention here is that you should ground balance carefully over the wall and use pinpointing.

23. How should I use the device in fields with long grass and stubbles? You can use the Discrimination 2 (DI2) mode in such fields. Sweep the search coil slowly holding it over the grass or stubbles.

109 Deep Pro FAQs

1. I CANNOT GROUND BALANCE MY DEVICE. I TURN THE GROUND BALANCE KNOB TO MAXIMUM (10), DROP SENSITIVITY TO HALF-WAY BUT NO SUCCESS. WHY?
You cannot ground balance because the ground you are on has high iron mineralization. First, turn the GB knob to the ideal level 6 -7 and sensitivity to maximum. Then, turn the Iron Audio to minimum and select Search 2 mode. If during your search, you want to detect ferrous metals, after switching to Search 2 mode, turn the Iron Audio to maximum first and then start lowering it gradually until the iron tone is not heard.

2. MY DEVICE GROUND BALANCES AT LEVEL 8. WHAT SHOULD I DO?
You can search this way but you should keep in mind that as you turn the ground balance setting towards the maximum (10), the device will start losing depth for some non-ferrous metals except for gold. If you are looking for non-ferrous metals such as silver, copper, bronze, brass etc. it is recommended that you leave the GB knob at the ideal level 6-7 and then gradually lower sensitivity to eliminate noise. When searching for gold or iron, the level of the GB setting will not affect depth so you can turn the GB knob towards the maximum if needed instead of lowering sensitivity.

3. THE DEVICE RECEIVES A LOT OF NOISE DURING SEARCHING. WHAT SHOULD I DO?

If the ground balance is at the ideal level of 6-7, first try eliminating the noise by lowering the sensitivity. If you lose too much depth, it means that the ground you are on has high mineralization. In such a case, you can eliminate the noise by using the Search 2 mode.

4. THERE IS NOISE - OTHER THAN TARGET SIGNAL OR INTERFERENCE -COMING FROM THE DEVICE. WHAT SHOULD I DO?
You may not have not tightened the shaft completely during assembly. Check the shaft and the connection points.

5. HOW WILL I DECIDE WHETHER THE GROUND I AM ON HAS IRON MINERALIZATION OR NOT?
First, you will not be able to ground balance. Even if you lower sensitivity, the device will continue to receive ground noise. In such a case, turn the iron audio to maximum and listen to the ground noise. If the noise is a low, ferrous tone we can say that the ground is iron mineralized.