There are various types of metal detectors, including VLF detectors and professional pulse induction (PI) detectors. VLF detectors are suitable for searching for metallic objects at shallow depths, such as searching on the beach or “treasure hunting” with children. PI detectors, on the other hand, are better suited for detecting deeper gold deposits and larger metallic objects.

How it works: VLF detectors operate at low frequencies that are transmitted into the ground. Metallic objects affect these frequencies and generate a signal in the detector. The device analyzes the signal changes and thereby detects the presence of metals.

Areas of application: VLF detectors are suitable for searching for everyday metallic objects such as coins and jewellery. They are effective in less mineralized soils and are often used by beginners and hobbyists.

How it works: Pulse induction detectors generate short, intense electromagnetic pulses. These pulses create a magnetic field in the ground, which is disturbed by metal objects. The detector recognises the changes in the magnetic field and thus identifies metals.

Areas of application: Pulse induction detectors are ideal for searching for deep-lying metallic objects. They are efficient in highly mineralized soils and are well suited for treasure hunting in challenging environments.

How it works: GPA ground scanners use a special probe that receives electromagnetic signals emitted naturally by the environment. These signals are influenced by underground structures and objects and detected by sensors in the probe. By analyzing these received signals, the GPA creates images of the ground structures.

Advantages of the GPA:

• Depth detection: GPA enables the discovery of deep-lying objects, such as treasures or structures, that are overlooked by other detectors.
• Accuracy: Thanks to its ability to create detailed images, users can obtain more accurate information about the nature and location of objects underground.
• Versatility: GPA is used in professional gold prospecting, locating gold deposits, treasure hunting, archaeology, and construction surveys. It offers a wide range of applications for different areas.
• Minimal disturbances: The technology minimizes interference from surrounding materials and enables the collection of accurate data.

A GPA ground scanner can play a valuable role in identifying archaeological remains. It enables the ground to be examined for non-metallic objects such as graves, masonry, or foundation remains. By evaluating the reflected electromagnetic waves, the GPA can detect anomalies in the ground and provide an image of the underlying structures.

Regular maintenance and cleaning of your gold detector is important to maintain its long-term functionality. Make sure that the detector is stored in a dry place after use to prevent corrosion. Carefully remove dirt and debris with a soft cloth or brush. Avoid using chemical cleaning agents, as these can damage the device.

There are various search techniques that can be used when searching for gold and treasure. These include the grid search pattern, in which the search area is systematically divided into square sections, the spiral search pattern, in which the search moves in a spiral around a central point, and the grid search pattern, in which the area is searched in horizontal lines. It is also advisable to walk slowly and hold the detector at a low and stable height above the ground to achieve accurate results. In addition, targeted search areas, such as riverbeds or historical sites, can be promising. Experiment with different techniques and adapt them to the specific conditions and objectives of your search.