Treasure hunting metal detectors

In summary, discrimination between good and bad targets with metal detectors relies on the ratio of inductance to resistivity. The depth of the target also plays a crucial role in discrimination, and fine-tuning the signals takes years of experience. There are resources available, such as the website http://www.gi.alaska.edu/~jesse/treasure/misc/howdetector.html, that can provide more information on how to use metal detectors effectively.
  • #1
wolram
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How do they discriminate between good (targets ) and rubbish, it seems that the orientation of the (Target) can fool the detector, from using one of these detector for many years , i find that the depth of the (Target) is instrumental in the discrimination, and only after years of (detecting) can can one fine tune the signals received.
 
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  • #2
Maybe this site can help(and look for other sites)

http://www.gi.alaska.edu/~jesse/treasure/misc/howdetector.html

"Metal detectors can distinguish metal objects from each other based on the ratio of their inductance to their resistivity. This ratio gives rise to a predictable delay in the receive signal at a given frequency. An electronic circuit called a phase demodulator can measure this delay"
 
  • #3


Treasure hunting metal detectors use a variety of techniques to discriminate between good targets and rubbish. One of the main ways is by using different frequencies to detect different types of metals. For example, gold has a different frequency than iron, so the detector can differentiate between the two.

Another important factor is the size and shape of the target. Metal detectors are designed to detect larger, solid objects rather than small, irregularly shaped pieces of metal. This means that larger targets, such as coins or jewelry, will produce a stronger signal than smaller targets, such as bottle caps or nails.

The orientation of the target can also play a role in discrimination. As you mentioned, the way the target is positioned can affect the signal received by the detector. This is why it's important to scan an area from multiple angles to ensure the accuracy of the signal.

Depth is also a crucial factor in discrimination. The deeper the target is buried, the weaker the signal will be, making it more difficult for the detector to accurately identify the target. This is why experienced metal detectorists often use different settings and techniques to adjust for depth, such as changing the sensitivity or using a smaller coil.

Ultimately, discrimination with metal detectors takes practice and experience. As you mentioned, it can take years to fine tune the signals received and accurately identify targets. It's important to continue learning and experimenting with different settings and techniques to improve discrimination and increase the chances of finding valuable treasures.
 

What is a treasure hunting metal detector?

A treasure hunting metal detector is a device that uses electromagnetic fields to detect the presence of metal objects buried underground. It is commonly used by hobbyists and professionals to find valuable items such as coins, jewelry, and historical artifacts.

How do treasure hunting metal detectors work?

Treasure hunting metal detectors work by transmitting electromagnetic signals into the ground. When these signals encounter a metal object, they are reflected back to the detector, which then alerts the user with a visual or audible signal. The detector can also provide information about the size and depth of the object.

What are the different types of treasure hunting metal detectors?

There are several types of treasure hunting metal detectors, including pulse induction detectors, very low frequency (VLF) detectors, and beat frequency oscillation (BFO) detectors. Each type has its own advantages and limitations, so it's important to research and choose the best one for your specific needs.

Where can I use a treasure hunting metal detector?

You can use a treasure hunting metal detector in a variety of locations, such as parks, beaches, fields, and even underwater. However, it's important to check with local laws and regulations before using a metal detector in public places, as some areas may have restrictions or require permits.

What should I consider when purchasing a treasure hunting metal detector?

When purchasing a treasure hunting metal detector, you should consider factors such as the type of detector, its sensitivity and depth capabilities, and any additional features or accessories that may be useful for your specific needs. It's also important to research different brands and read reviews to find a reliable and high-quality detector.

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