08/28/2018 Even before purchasing a metal detector, you need to decide what exactly and where to look. If we are talking about searching for metal objects located in the ground at various depths, a ground metal detector is best suited.
This equipment is the most popular in the search segment, as it can be used not only for professional purposes (archaeological, geological, engineering), but also at the amateur level. The range is very wide, so it can be difficult to decide which metal detector is best for searching in the ground - the information presented below can help in this matter.
Basic nuances of choosing a metal detector
The success of a search is determined by many factors. The main thing is the detection depth, which depends on the position of the search coil, soil characteristics, and the content of mineral components. The presence of metal debris in the garbage and the overall dimensions of the item being sought are affected. Even the charge of the batteries can affect the efficiency of the device - if the batteries are significantly discharged, the device will “pierce” the soil to a shallower depth.
In addition to the search depth, when choosing, you should pay attention to other technical parameters:
- Method of processing and displaying information. Devices are divided into analog and digital, modern models are only digital. They are equipped with an LCD display and display the VDI number (metal conductivity characteristic) on the screen. Analog devices are now used only in the professional sphere.
- Discrimination against metals. A search restriction that allows you to filter out unnecessary groups of metals. To check controversial targets, Garrett metal detectors feature the Iron Audio function (Garrett patent). Some models have the ability to download and install their own discrimination programs.
- Pinpoint. A function that allows you to localize the location of the desired object with high accuracy. Present in most modern models, except the most budget ones.
- Frequency. The most common value among manufacturers is around 7 kHz. It is considered universal. This is sufficient to detect most common targets. If specific search conditions are needed, you should choose devices operating at the frequency recommended for this type of search. Modern devices often operate at 3 frequencies or multi-frequency mode.
- Ground balance. In inexpensive devices, it is set initially, while in more technologically advanced devices, preliminary balancing is provided. This way the metal detector is better configured to search for small objects, and its operating efficiency is maintained at an increased depth.
- Operating time without recharging (replacing batteries). The average battery life of a modern metal detector is at least 25 hours, which is quite enough to conduct a long continuous search. There are many devices that can work much longer.
- Weight. Even professional models do not weigh too much, but wearing them for a long time can lead to fatigue. To prevent your hand from getting tired, all devices have balancing that reduces the load.
- Type of coil. They are divided into categories "Mono" and "DD". The second option is recommended for use on soils with a high degree of mineralization. Coils also differ in their ability to come into contact with moisture. Sealed ones can be used in any conditions, while in the case of waterproof ones, only local ingress of water is allowed.
For many devices, especially those in the budget and even mid-range categories, oxidation of the desired items becomes a serious problem. A magnetic field is formed in the oxidized area, which affects the efficiency of the equipment. There are errors in the results. If the condition of an item is poor, it will be more difficult to find. In addition, the oxidized area is larger in volume than the original item, so small pieces of metal debris may appear to be quite large objects.
How deep does a metal detector go?
detection
depth
, the location of the object and its shape, and the frequency of the emitted field (operating frequency).
Almost everyone who wants to purchase a metal detector strives to find a device that has a sufficiently large detection depth. Is this necessary? Yes, this is important, but will you dig a hole at least three meters deep? Some will, and some won't.
Currently, the detection depth of a modern metal detector reaches, depending on the type of soil, from 2.5 m to 6 m or more, and the most popular deep metal detectors are:
- pulse detector PULSE STAR II PRO
- metal detectors with spaced orthogonal coils TM 808 and Gemini-3
- GTI 2500 ground detector with depth multiplier.
There are specialized frame detectors with a large search frame (up to 2 m), capable of detecting a large object at a depth of up to 9 meters.
Devices with such a detection depth are, of course, in demand both by fans of hobby searching and by engineering specialists, but in most cases, for a high-quality search, it is enough to have one of the universal ground metal detectors and additional compatible
search coils, and sometimes a depth multiplier.
Regarding the detection depth of universal ground metal detectors, as well as most underwater metal detectors, there are several important points proven in practice that are valid for detectors of various levels and purposes:
- Most metal detectors operate in the frequency range from 5 to 60 kHz. The low frequency
of the device does not detect small targets well, but the electromagnetic field penetrates deeper into the ground and therefore the detection depth will be increased.
The high-frequency signal
attenuates faster in the ground, so the target detection depth will be reduced, and small targets (2-5mm) will be detected. This is effectively used when searching for gold and gold nuggets - increasing target size increases detection depth
- the use of discrimination reduces the detection depth, as a rule, 12-17% of the depth is lost
- increasing the size of the search coil increases the detection depth of large targets by 10-30%, but the accuracy of target detection deteriorates. The use of large search coils increases the scanning area and search speed
- detection depth can vary greatly depending on the mineralization of the soil, especially in simple amateur-level metal detectors
- Pulse metal detectors are less susceptible to the influence of ground minerals. The detection depth in soil and salt water is greater compared to the most common metal detectors using VLF technology and is comparable to the detection distance of the same target in the air
As mentioned above, for a high-quality search it is enough to have one of the universal ground metal detectors and additional compatible search coils, and sometimes a depth multiplier.
Additional coils make it possible to use different operating frequencies of the detector, and therefore obtain different detection depths
.
This secret lies on the surface, but most seekers stubbornly refuse to notice it and use it effectively!
It is worth noting that most of the discovered valuable finds, gold nuggets, coins, caches, relics and artifacts were discovered at a depth of 1m to 1.5m.
By the way, the vast majority of these finds were made by metal detectors that have a detection depth corresponding to the table. The exceptions are military trenches and camouflaged underground shelters, mainly from war times.
Equipment classes
All ground-type metal detectors are divided into three large categories, or classes. Descriptions of each of them are presented in the following list:
- Entry level. The equipment is attractive due to its affordable cost and reliability. The main advantages are a small number and simplicity of settings, ease of use. All necessary search programs and settings are already preset. For a beginner search engine, this is the best option to learn how to listen to the detector and understand the general principles of search. Due to the small possibility of adjustments, there is a high probability of metal debris getting into your finds.
- Average level. Semi-professional level metal detectors allow you to customize your device yourself. They have a fairly high sensitivity and a wider discrimination scale. Many adjustable parameters can make the device difficult to use, especially in the initial stages.
- Professional level. Expensive devices equipped with built-in microprocessor systems and advanced software. They are used by prospectors, archaeologists, treasure hunters, and other specialists in various fields. Such devices are capable of providing maximum information - the type and even shape of the detected object, the specific type of metal, distance and depth. It is possible to download additional software (for example, special programs for multi-stage discrimination).
When determining which metal detector is best to buy for searching in the ground, you should not resort to excessive savings. Even if we are only talking about starting to get acquainted with metal detectors. Cheap models detect only fairly large structures, and with not the highest accuracy. It is better to choose a device from the middle category - for any amateur level tasks this will be enough. Having a discrimination system will help you not to be distracted by insignificant or “junk” finds. It is recommended to buy models with digital signal processing - they are more accurate and “see” to a greater depth.
The best metal detectors from Aliexpress for beginners
The main difference between metal detectors for beginners and professional and semi-professional models is easier setup and a clear interface. Below are high-quality and inexpensive models that are ideal for learning and entertainment.
The best metal detector for beginners MD-4030
Price – US $38.76 or 3,020 rubles.
Buy on aliexpress
Simple but durable design. Clear menu and settings. If desired, you can figure out how to assemble and use it within 10 minutes. An ideal option for those who have not previously dealt with such equipment. Pros: you can connect headphones, runs on 6F22 9 V batteries. Minus: searches only up to 1 meter, there are small errors. You can work with the device even in winter at a temperature of -15 degrees. A very decent metal detector for the money.
Small-sized metal detector VAHIGCY metal detector
Price – US $24.39 or 1,900 rubles.
Buy on aliexpress
A small-sized model that you can take with you on a trip. You shouldn’t expect much from it, since the device is capable of finding objects at a depth of up to 15 cm. It is often used by amateurs to search for coins in abandoned areas. One of the main advantages is that it can be searched in shallow water and is resistant to moisture. Minus: rather flimsy case, needs to be handled with care. For the money, this is a good option for a beginner.
Metal detector for beginners MD-3010II
Price – US $60.96 or 4,750 rubles.
Buy on aliexpress
For those who want to see quick results, but are not willing to pay a lot for equipment. The best option for a beginner, excellent sales in the Chinese market. On the plus side: it is possible to select metal discrimination, which is rare in a budget line, and there are no wires sticking out. Minus: search depth is 25 cm. Among the inexpensive options, this model stands out noticeably in terms of functionality, so you should pay attention to it when choosing your first device.
Metal detector for searching coins Kkmoon Metal Detector
Price – US $32.40 or 2,525 rubles.
Buy on aliexpress
Often used to find old coins. Takes a depth of up to 19 cm, lightweight, comfortable to hold. Ideal for a starter kit, low cost, lots of positive reviews and sales. The settings are simple, even a beginner who had no idea about such technology will understand the interface. Disadvantage: the working depth is too small, but it is enough for non-professional searching and gaining experience.
Simple waterproof metal detector TS180
Price – US $72.00 or 5,611 rubles.
Buy on aliexpress
Easy to control and set up, it searches well for small objects at a depth of 23 cm. The kit does not include batteries or headphones, so you will have to take care of them in advance. Of the obvious disadvantages: large dimensions and weight, but it fits comfortably in the hand. You can adjust the length of the rod, the coils are waterproof, which can be considered a plus. The ergonomics of the design are fully respected; it is convenient to monitor the indicators during the search. A good option for a beginner, it will help you gain experience in searching.
Convenient deep metal detector GTX5030
Price – US $38.45 or 2,996 rubles.
Buy on aliexpress
Small dimensions, quite convenient to use, there are several modes. The rod is also adjustable, you can search for jewelry at a level of 1.5 meters, which is a pretty good indicator for an amateur device. The only downside is the small error in determining the depth. As users note, it is rare to come across devices with factory defects, but the manufacturer does not refuse to make an exchange. Overall, for a small amount of money, this is a pretty good device for amateur searching for old coins.
Compact metal detector GP-POINTER
Price – US $13.33 or 1,038 rubles.
Buy on aliexpress
A small device that you can take with you on a trip. Despite its small dimensions, it is able to find a coin at a depth of 22 cm. Quite easy to use and understand the indicators. One distinctive feature is that this device is often purchased to test people for tolerance to prohibited items. This indicates good performance and demand. Of the minuses: you cannot configure the device for a specific type of metal. In general, there are quite a lot of good reviews for this device.
Handheld point metal detector GP pointer II
Price – US $22.31 or 1,738 rubles.
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It is an improved analogue of the previous model. This device is capable of finding metal at a depth of up to 46 cm. In practice, a simple coin can be found at a maximum of 6-7 cm, which the manufacturer warns in advance. On the plus side: there is a built-in flashlight, which is very convenient. In addition, the device is waterproof. Disadvantages: small search area, but it is justified by its small size and low cost. This option is ideal for hobbies and travel; it weighs only 185 grams.
Simple handheld metal detector GC-2007
Price – US $22.49 or 1,752 rubles.
Buy on aliexpress
Visually it resembles the model mentioned above. In fact, it has lower sensitivity and can detect metal at a depth of up to 40 cm. It uses a crown battery, which is also very convenient; you can always take an additional power source with you, since it does not take up much space. The device has a good display and a simple menu. Even a schoolchild can figure out this toy. Suitable for a hobby; the low cost justifies several disadvantages. For example, you will have to bend over while searching. In general, reviews from customers are quite good.
Surface handheld metal detector MD-300
Price – US $11.01 or 858 rubles.
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A modest option with very simple functions. Powered by a crown battery, holds a charge for a long time. The search depth is only 15 cm, but this is enough to find metal or check a visitor. Such devices are often bought in nightclubs; they look quite stylish. Of the minuses: there are no additional settings that would help exclude uninteresting metals. For a low cost, it is quite an adequate option.
Long-range metal detector AKS 3D
Price – US $149.50 or 11,651 rubles.
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The ideal tool for those who want to find real treasure. According to the manufacturer, the device is capable of recognizing metal at a depth of up to 15 meters. In practice, this value is significantly lower, only 5 meters. Despite this error, the power of the device is quite enough to find deposits of ancient coins or value. The dimensions are quite large, weighs 3.2 kg, and is not as comfortable to hold as similar devices. Despite even this small drawback, the reviews for this device are excellent, which justifies the high cost.
Children's metal detector KKMOON
Price – US $19.26 or 1,501 rubles.
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A great reason to have fun with your child. Despite its modest size and functionality, this device will help you find a gold chain, rings, and small jewelry. Experience has shown that it works great with sand, so you can take it to your local beach. The kit includes a small spatula that will help you dig in. It weighs only 500 grams, which is quite excellent for a child's hand. Comfortable to hold, good quality body. It is possible to reduce the sound and adjust the sensitivity. For a low cost, a worthy and useful gift for a little treasure hunter.
Metal detector for security service ANENG
Price – US $8.48 or 660 rubles.
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A portable metal detector that can be used for security purposes. It is rarely used to search for treasures, but if you take it to the beach, the owner will not go wrong. Can search for metal objects at a depth of up to 15 cm. Not used by professionals, since the recognition range cannot be adjusted, the device will not show the type of object, etc. Reacts equally to paper clips, knives and metal balls. It’s difficult to name the best item to search for, but if the device is associated with security activities, then the benefits will be much greater.
Metal detector with convenient display TIANXUN
Price – US $58.45 or 4,555 rubles.
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Using this device you can find relics in the form of valuable coins, gold chains and other jewelry. A convenient display that shows the battery charge, signal level and a menu where you can change settings. Quite easy to assemble and use. Good for a beginner. Pros: sees at 24 cm depth, can work in water, comfortable handle. Of the minuses: the built-in headphones are of poor quality, weigh 1.5 kg, which is quite a lot, considering the low efficiency. In general, the manufacturer does not undercut the cost; the model will fully justify itself in operation.
Metal detector with two coils NoEnName_NULL
Price – US $201.52 or 15,705 rubles.
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A Chinese detector that has earned a lot of positive reviews. The kit includes everything you would normally need to conduct a thorough search. Spatula, tripods - everything is already in the kit. The metal detector itself is equipped with advanced technologies; there is a large LCD screen on which information is displayed. The kit also contains instructions that will help you assemble the device correctly.
Comparison table of characteristics
| Model | Price | Type | Discriminator | Search program | Coin | Frequency |
| Bounty Hunter Tracker IV | RUB 4,590 | Universal | Preset (rheostat) | 3 | 20 cm | 6.6 kHz |
| Garrett ACE 200 | RUR 12,900 | Universal | 5 segments | 3 | 24 cm | 6.5 kHz |
| Fisher F11 | RUB 13,200 | Universal | 9 segments | 3 | 25 cm | 7.7 kHz |
| Garrett ACE 400 | RUB 23,750 | Universal | 16 segments | 5 | 27 cm | 8.25 kHz |
| Teknetics T2 | RUB 28,800 | Universal | 13 segments | 2 | 26 cm | 13 kHz |
| Garrett GTI 2500 | RUB 48,950 | Universal | 30 segments | 6 | 40 cm (50 cm – in “All metals” mode) | 7.2 kHz |
Conclusion
The choice of a specific model depends on the tasks that the device will perform. Dozens of factors play a role, including the type of soil, depth and distance to the object. The higher the cost, the better the sensitivity indicators, the richer the equipment and the set of special options. It doesn't always make sense to pay for additional functions, because many of them will end up unused. If you are deciding which metal detector is best to choose for searching in the ground for amateur purposes, a model from the middle price category will be more than enough. Particular attention should be paid to the following options: Garrett ACE 200, Garrett ACE 400, Teknetics T2.
See also:
- Metal detector for beach searching - how to choose
- Underwater metal detector - the most popular models
- Comparisons and differences between Fisher F75, F75+ and F75 LTD
The best underwater metal detectors from aliexpress
In reservoirs you can find a huge amount of precious jewelry, which will allow you to spend your leisure time profitably. Below are the current options for the real gold digger.
Point underwater metal detector PI-iking 750
Price – US $58.79 or 4,581 rubles.
Buy on aliexpress
It works on the principle of pulse induction, which plays an important role in detecting precious metals at high densities. The device is universal; you can work with it underwater and on land. The only thing is that it is easier to hold in water, since the person is already in a bent state. There is no convenient tripod to extend the holder. You can also work at a depth of up to 30 meters, after which the device begins to emit a lot of noise. The crown is used as food, which is also very convenient. The detection depth is 40 cm, which is not bad for its small size and low cost. Of the minuses: it does not determine the type of metal found, you will have to do the analysis on land.
Underwater metal detector Pinpointer Finder
Price – US $11.58 or 902 rubles.
Buy on aliexpress
A portable device that, despite its low power, can find metal in water at a depth of up to 15 cm. For searching for small jewelry, it is more suitable for an amateur device that can be taken on vacation. There is a special leather strap that can be conveniently attached to your hand or water suit. In terms of price and quality, it’s a good option for underwater hunting for rings and chains. There is a sound switch, it works from a simple crown.
