The most common technologies used for metal detection

The hobby of metal detection is probably the most common one around the globe. The reason why so many people have become literally addicted to metal detecting is that they find hunting for treasure to be a thrilling and interesting. Metal detection is an excellent pastime for both children and adults. As you can imagine you cannot enjoy this wonderful hobby if you do not have the right metal detector, namely a Bounty Hunter. Given that there are so many models, finding the right one for your needs can be a daunting task. Fortunately, you can visit sites like and learn about features and the technology behind them. All metal detectors, whether Bounty Hunt or other brands, operate based on electricity and magnetism, but over the years different types of metal detectors have been developed. Are you curious to find out what technologies are currently in existence?

Beat frequency oscillation

The most basic type of metal detectors is the beat frequency oscillation and understanding how it operates is fairly easy. This type of metal detector is considered so weak that it is the most frequently encountered device in stores. The device is able to locate objects found at two feet below ground. Like all metal detectors, it features a coiled of copper that is wrapped around a ring or steel or iron. The device used for metal detection has a small ring, which is attached to the base of the detector, and another one that is attached a little bit higher. The coils are connected to an oscillator that generates a frequency. The user is notified by the hum of the speaker when the coils detect a difference in the frequency.


VLF stands for Very Low Frequency and it is the most common type of technology for metal detection. A VLF detector  is able to detect a large variety of metals. Unlike other models, this type of device features two rounds of coil wire. Besides the two coils, the metal detector includes an electronic circuit that filters the signal from the receiver. The circuit basically allows the user to eliminate certain signals and focus only on a certain range. The VFL detector is useful because it will allow you to focus on finding gold and silver, rather than on aluminum.

Pulse Induction

When it comes to detecting metallic objects, the latest innovation is represented by pulse induction technology. The PL metal detector is a specialized unit and this is why it is most frequently used by treasure hunters who are searching for items deep under the surface. It is so proficient that they can also be used at security checkpoints to detect weapons. The technology is based on echolocation, which means that it uses echoes to locate and identify objects. The detector works by sending a powerful current through the coil. Once the pulse disappears, the magnetic field reverses and generates an electric current, based on this current, the device is able to determine the presence of objects in the ground. Since it does not use a separate coil for detection, the PL device can discriminate between signals.

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