How to Choose the Right Type of Metal Detector for Your Adventure

A metal detector is not just a device, it is first and foremost your partner in searching. Some people go out into the field with it for historical finds, some look for lost jewelry on the beach, and for some it is important to work, for example, in construction or archeology. But regardless of the goal you are pursuing, there is one common task. It is to choose exactly the type of metal detector that is right for you, and not just on the advice of bloggers or friends. Buying a device is essentially an entry ticket to the world of adventure. A mistake in choosing can cost not only money, but also cause total disappointment. Therefore, now we will consider this issue in as much detail as possible so that you have an objective picture and a common understanding.

Why do you need a metal detector - defining the goal

Before looking at brands, prices and characteristics, it is advisable to initially ask yourself an honest question about what exactly you plan to search for. Because almost everything depends on this - from the depth of the search to the design of the coil. Among the most popular main directions are:

1. Beach search. This is not only about gold chains and rings. This is salt water, sand, wind, the need to quickly respond to signals. For the beach, protection from moisture and the ability to work in conditions of high mineralization are important.

2. Searching in the forest, fields, near old settlements. Here, depth, stability of operation and the ability to distinguish old iron from something more valuable are valued.

3. Coin search. Usually, searches are conducted in the upper layers of the soil. In this case, excellent sensitivity to small objects is needed, especially copper, silver and bronze.

4. Artifacts and relics. In this situation, depth, power and accuracy are of primary interest. Such units are often used by professionals or experienced diggers.

5. Industrial use. Seekers most often look for pipes, cables, hatches, fittings. This type of metal detectors is a separate category, they are often completely unsuitable for a hobby, which is also worth taking into account.

Technologies Used

When a person begins to delve into the technical features of search devices, at first glance everything may seem complicated and overloaded with terms. However, in fact, the entire market is divided into two key areas. That is, VLF and PI technologies are used. They differ fundamentally not only in their design, but also in the behavior of the device on the ground, in accuracy, depth and sensitivity.

VLF - universal solutions for every day

Metal detectors based on VLF technology are the most common devices. They are most often chosen by beginners and those looking for a universal device for regular use. These types of metal detectors operate at a fixed frequency, they are able to distinguish between types of metals and are configured to filter out debris and recognize useful targets. They are lightweight, economical, relatively inexpensive and do not require complex training. Devices of this type show themselves especially well on soils with low mineralization.

But it is worth noting their main drawback. It consists in the fact that if the soil is complex, for example, with salts, moisture or impurities, these devices begin to give false signals. In addition, their detection depth is quite limited, especially when it comes to searching in clay or wet sand. Nevertheless, in most standard conditions, they show themselves confidently and stably, so they remain favorites among beginner treasure hunters.

PI - reliable tools for complex tasks

If the expected search conditions involve a high level of soil mineralization, constant humidity, sea beaches or hunting for objects buried at a serious depth, then it is still worth paying attention to the more innovative PI technology. These devices operate on the principle of pulse induction and are practically not subject to external interference dependent on the soil. Their power allows you to find targets where VLF can lose the signal. The units perfectly sense gold, large objects and are not confused by salt water at all.

But it is also worth noting certain difficulties. It is important to know that PI systems are quite heavy. Therefore, they require more experience from the applicant and are not able to clearly distinguish non-ferrous metal from iron. It is not easy to operate such a device without prior practice. In addition, an important point is the cost, because it is also an order of magnitude higher. But for advanced users or professionals, their capabilities more than cover the costs, and the price is absolutely justified. Therefore, such tools should be considered not as a hobby, but as serious-level devices. 

Why is the signal frequency important?

It is very important to understand the frequency of a metal detector, because it is these parameters that will fully determine how the device will behave in real search conditions. The frequency directly affects what kind of finds you will be able to find, and which will remain hidden in the ground. Low frequencies, usually in the range of three to eight kilohertz, allow you to work at greater depths and detect large metal objects well. This could be an old axe, a cast-iron boiler, or some other element that has long been buried in the ground. But in pursuit of depth, such devices may not notice a small silver coin or a gold earring, especially if they are not deep, but against the background of an area with an abundance of garbage and all sorts of plugs and lids.

On the other hand, high-frequency types of metal detectors operate in the range of approximately fifteen to forty kilohertz. Therefore, they show themselves from the best side when it comes to precise, accurate work on small objects. They do not penetrate as deeply as low-frequency ones, but are much more sensitive to subtle signals from jewelry, crosses, buttons, bullets and all sorts of other accessories. That is why experienced users, when going to ancient settlements, forest farms or to the beach, often give preference to more sensitive equipment.

For those who do not want to choose between depth and accuracy, the best type of metal detector comes to the rescue - multi-frequency models. They are able to work at several frequencies at once or allow switching depending on the task. Such devices, which is quite obvious, are more expensive, but they are universal. You can tune in to any location depending on your plans and wishes, from the beach to the field. And in this case, the frequency ceases to be a limitation, turning into your working tool for each specific situation.

Choosing the type of coil - features and differences

The coil can safely be called the eyes of the device. Therefore, how effective it is depends on its shape, size and type of winding. Here, too, it is important to understand your search goals, because each model is good, but also designed for specific operating scenarios:

1. Concentric. This option is usually found in budget models. It works well on clean soil and is ideal for beginners.

2. Double-D. This is an advanced system. It separates signals better, works more stably, especially in difficult conditions. Therefore, it is often preferred by more experienced diggers.

3. Coil size. They come in small, medium and large. Which type of metal detector is best for you depends on the upcoming use case. Small (5-8 inches) are ideal for precise searching in trashy places. Medium (9-11 inches) are considered a universal option. Large (12-15 inches) are recommended for depth, but are more difficult to maneuver and have more false signals.

User level and skills

Another important point is an objective assessment of your own strengths. Sometimes people buy a fancy device, and then simply cannot figure it out. Or, on the contrary, they buy a simple one, but quickly outgrow it. Therefore, it is very important to look first of all at your skills and needs:

1. Beginners. Inexperienced users are recommended devices with a simple interface, minimal settings and preferably with automatic balancing. Models like Nokta Simplex, Garrett ACE, Minelab Vanquish will be an excellent start.

2. Advanced users. If you already have experience, look at models with manual settings, several programs, and frequency selection. Here you can think about more serious XP, Minelab Equinox and even Deus II.

3. Professionals. For serious tasks, deep PI systems, devices with wireless modules, a 3D map and ground penetrating radars will be required. But they are not cheap at all. But if you can afford such a device, believe me, the search will become much easier and more enjoyable.

Additional functional capabilities

When you have already decided on the type of metal detector, coil and frequency, do not rush to put an end to it, because the choice is not over. In the field, it is the additional functions that can play a key role. They not only make the search process more accurate, but also simply add comfort, especially if you spend the whole day with the device. Therefore, we recommend paying attention to the following points:

1. Soil balancing. It can be manual or automatic. This function helps the device adapt to different types of soil. In mineralized areas, you simply cannot do without it, otherwise you will receive many false signals and quickly get tired of useless digging.

2. Discrimination. In simpler terms, this is simply filtering out garbage. The ability to distinguish valuable metal from iron trash will help save time and maintain enthusiasm. Thanks to discrimination, the device does not react to such elements as nails, rusty cans and other household waste.

3. Sensitivity adjustment. This parameter helps to adapt to the terrain. Sometimes too high sensitivity is a hindrance, especially on difficult soil. The ability to fine-tune allows you to maintain a balance between stability and search depth.

4. Sound and vibration feedback. Indispensable for searching in noisy conditions. A clearly distinguishable signal helps you quickly understand what you are dealing with. And vibration is especially helpful if you are working near a road, on the beach or with headphones.

In conclusion, it is worth noting that choosing a metal detector is not just a technical process. After all, it is very important to find a balance between your desires, goals and reality. Do not buy a device, so to speak, "for growth", if you have just started. But do not be afraid to invest in a truly reliable device if you feel that you are ready for new levels. Remember that there is no ideal device. But there is an excellent device just for you.