By Alain Châtillon, President of Latincom-Mex SA and Deepers Detector Co
“Gold does not fall from the sky… it is under your feet, you just have to seek it.” Alain Chatillon
A superb discovery made in the back country of Toulouse, France with a Deepers at a depth of 2 feet. In the pot were 64 gold and silver coins from the Louis XI era (around the 1450 time frame). A pleasant discovery for this treasure hunter. Read article.
This pretty much sums up what you absolutely must know about detecting and more importantly, about pulse induction detectors.
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Deep Detection
Preamble: We consider that the capability for detecting at maximum depths equals to being better able to locate valuable metal targets. With our coils, we can detect from 16 inches to 5 feet and even deeper, up to 10 feet with our 40 x 40 inch frame coil.
Deeper targets require the most powerful detection equipment available, the Deepers Multi Frequency and Deepers X5. Without the depths, achievable only by the Deepers’ detectors, all other means of detecting, locating, excavating, testing or radiographing are obsolete.
Deeper targets require the most powerful detection equipment available, the Deepers Multi Frequency and Deepers X5. Without the depths, achievable only by the Deepers’ detectors, all other means of detecting, locating, excavating, testing or radiographing are obsolete.
Current Electronic Systems Used for Deep Metal Detection
The difficulty in detecting deeply buried metal objects grows proportionally to the depth at which they are buried, to find them there are four different types of metal detectors:
1. Classic VLF Detectors
To date, approximately 94% of metal detectors in use are the traditional VLF (Very Low Frequency) detectors. They are usually classified under names such as BFO (the oldest) - TR - IB (also known as sinusoidal)…etc. There is a variety of these detectors and in general, function with frequencies ranging from 5 to 30 kilo hertz, very low frequencies from which they get their name.
These devices are truly ideal for detection of coins, small pieces of jewelry, lost or buried objects at the surface, reaching down to maximum of 7 to 10 inches in depth. They are compact, efficient within their category, and can be ready to use within a few minutes such as the Garrett AWG 500 or GRAx500, AWG 2000 and 2500, which are excellent detectors within the VLF class.
To date, approximately 94% of metal detectors in use are the traditional VLF (Very Low Frequency) detectors. They are usually classified under names such as BFO (the oldest) - TR - IB (also known as sinusoidal)…etc. There is a variety of these detectors and in general, function with frequencies ranging from 5 to 30 kilo hertz, very low frequencies from which they get their name.
These devices are truly ideal for detection of coins, small pieces of jewelry, lost or buried objects at the surface, reaching down to maximum of 7 to 10 inches in depth. They are compact, efficient within their category, and can be ready to use within a few minutes such as the Garrett AWG 500 or GRAx500, AWG 2000 and 2500, which are excellent detectors within the VLF class.
2. Two-Box Detectors
These devices are designed from either a preexisting detector that has been modified to include “the Garrett Blood Hound”, used to convert Garrett detectors, or a specific unit comprised of two coils (a transmitting and a receiving coil), such as the Fisher, Gemini, or the White’s TM808. According to ground experiments we conducted, the results indicate, without meaning to offend anybody, that these detectors do not offer the type of depth needed for serious deep target searches. Like other detectorists in the world, we have also abandoned the use of these detectors, even though we recognize that in certain cases (after adjusting them with great care) they can give good results.
These devices are designed from either a preexisting detector that has been modified to include “the Garrett Blood Hound”, used to convert Garrett detectors, or a specific unit comprised of two coils (a transmitting and a receiving coil), such as the Fisher, Gemini, or the White’s TM808. According to ground experiments we conducted, the results indicate, without meaning to offend anybody, that these detectors do not offer the type of depth needed for serious deep target searches. Like other detectorists in the world, we have also abandoned the use of these detectors, even though we recognize that in certain cases (after adjusting them with great care) they can give good results.
3. Magnetometer
A magnetometer transmitting protons or other particles is able to penetrate the ground at a good depth (up to 20 feet). Do not confuse them with the iron detectors, used by city workers, which are not very powerful and normally used to find cast iron covers under the asphalt. The use of a particle transmitting detector is a complicated and delicate procedure requiring an extensive amount of practice in order to interpret the information provided by the equipment correctly. Moreover, they are very expensive.
The magnetic metals (iron, nickel, and cobalt) and any magnetic disturbances of terrestrial fields, due to local geological anomalies (ore deposits, drains, and minerals…) can be easily detected. If you are interested in locating large metal masses (ships, cannons, and seams), the particle magnetometer may be the ideal detector. Be sure to have an expert or a team of experienced professionals accompany you because… the amount of holes you have to dig to confirm the target will make your head spin.
A magnetometer transmitting protons or other particles is able to penetrate the ground at a good depth (up to 20 feet). Do not confuse them with the iron detectors, used by city workers, which are not very powerful and normally used to find cast iron covers under the asphalt. The use of a particle transmitting detector is a complicated and delicate procedure requiring an extensive amount of practice in order to interpret the information provided by the equipment correctly. Moreover, they are very expensive.
The magnetic metals (iron, nickel, and cobalt) and any magnetic disturbances of terrestrial fields, due to local geological anomalies (ore deposits, drains, and minerals…) can be easily detected. If you are interested in locating large metal masses (ships, cannons, and seams), the particle magnetometer may be the ideal detector. Be sure to have an expert or a team of experienced professionals accompany you because… the amount of holes you have to dig to confirm the target will make your head spin.
We should, lastly, examine the Double FLUX GATE magnetometers which is a very complex technology. The only commercial example of a truly operational and powerful magnetometer is the MAG 505 made by our company, which was developed after more than 18 months of studies and tests. It is the ideal supplement detector for those who are seeking for gold and deeply buried treasures that are partly comprised of iron. (refer to the MAG 505 page for more information).
4. Pulse Induction Detectors
a. Deepers Pulse Induction Detectors
With a pulse induction detector (Pulse Power - Pulse System) we have a very interesting category of devices which offer a penetration of signals at larger depths. For serious treasure hunters, they are truly indispensable, very efficient, and permit detection and location of any metallic mass buried at depths up to 10 feet (regardless of the type of metal).
a. Deepers Pulse Induction Detectors
With a pulse induction detector (Pulse Power - Pulse System) we have a very interesting category of devices which offer a penetration of signals at larger depths. For serious treasure hunters, they are truly indispensable, very efficient, and permit detection and location of any metallic mass buried at depths up to 10 feet (regardless of the type of metal).
b. How does a pulse induction detector work?
The theory behind pulse induction detectors is simple and has been around for a couple of decades but the latest technological advancements made with regard to these electronics have ensured them undeniable supremacy in regards to their ability to penetrate ground. The search coil transmits an electromagnetic signal at a fixed time and variable intensity of 50 to 3,000 cycles/second (depending on the detector). This current will penetrate the ground at a lesser or greater depth depending on the diameter of the coil and the detector. If the signal encounters a metal object it will produce a counter signal (based on the principle of Foucault current or eddy currents) which will be detected at the surface by the detector.
The theory behind pulse induction detectors is simple and has been around for a couple of decades but the latest technological advancements made with regard to these electronics have ensured them undeniable supremacy in regards to their ability to penetrate ground. The search coil transmits an electromagnetic signal at a fixed time and variable intensity of 50 to 3,000 cycles/second (depending on the detector). This current will penetrate the ground at a lesser or greater depth depending on the diameter of the coil and the detector. If the signal encounters a metal object it will produce a counter signal (based on the principle of Foucault current or eddy currents) which will be detected at the surface by the detector.
With a pulse induction device the ground penetration is directly affected by the quality of the electronics, the dimensions and technology of the coil used. The best devices on the market are equipped with elliptical coils that are highly sensitive and designed specifically for detecting metal masses at a depth of 4 to 5 feet or with a 40 x 40 inch Frame coil at a depth of 14 feet. (refer to the Deepers MF or the Deepers X5 pages to learn more about these fantastic detectors).
c. Advantages of a Pulse Induction Detector
The best for quickly covering large areas and finding the deepest target is the 40 x 40 inch frame coil, supported by an operator of the electronics box and the carrier of the frame. Large areas at great depths are now a reality and so is the ability to adjust the detector to reject the surface trash (from 16 to over 20 inches) as commonly found close to most urbanized areas. PI technology is particularly important to the modern meteorite hunters. While using the Hypersensitive 10 x 21 inch coil, the user can expect depths of up to 7 feet. This coil is great for use in areas that are full of obstacles or that are too uneven to use the larger frame coil. It can be used up next to rocks, walls, trees and bushes to detect where others can’t. It is recommended for surveying an area to find hot spots for later using the large frame coil for further deep searching. The 10 x 14 inch elliptical coil with High-Tech Litz winding (the latest in technology used by the military and the competitive civilian market) you can expect excellent results over the most mineralized grounds, up to 4 feet in depth. It is a perfect tool for prospecting for gold and silver in the heavy mineralized soils where they are commonly found. Finally, the reliability of the information provided by these electronics is exemplary, even without the discrimination system, unlike other detectors on the market, ground mineralization has little or no effect on this detector.
The best for quickly covering large areas and finding the deepest target is the 40 x 40 inch frame coil, supported by an operator of the electronics box and the carrier of the frame. Large areas at great depths are now a reality and so is the ability to adjust the detector to reject the surface trash (from 16 to over 20 inches) as commonly found close to most urbanized areas. PI technology is particularly important to the modern meteorite hunters. While using the Hypersensitive 10 x 21 inch coil, the user can expect depths of up to 7 feet. This coil is great for use in areas that are full of obstacles or that are too uneven to use the larger frame coil. It can be used up next to rocks, walls, trees and bushes to detect where others can’t. It is recommended for surveying an area to find hot spots for later using the large frame coil for further deep searching. The 10 x 14 inch elliptical coil with High-Tech Litz winding (the latest in technology used by the military and the competitive civilian market) you can expect excellent results over the most mineralized grounds, up to 4 feet in depth. It is a perfect tool for prospecting for gold and silver in the heavy mineralized soils where they are commonly found. Finally, the reliability of the information provided by these electronics is exemplary, even without the discrimination system, unlike other detectors on the market, ground mineralization has little or no effect on this detector.
Pulse induction detectors are truly ideal and impossible to overlook their importance for the serious treasure hunter. Treasures, trunks, spoils of war, robbery caches, monetary deposits, silverware, bronzes, caches of jewelry or weapons are now possible and at your fingertips….or should I say, under your feet but now within reach.
Concept Of Hidden And Lost (Fundamentals in Treasure Hunting)
In general, to lose something is to lose a little. To hide something is for the purpose of hiding a lot. One can lose (1 Sesterce, 1 Denier, 1 Ecu, 1 Ducat, 1 Dollar… 1 Euro, a ring, a small piece of jewelry) but usually if a person hides something it is 1,000 to 100,000 or a million times more. If you lose something you probably lose it at ground level, whereas in order to hide something you DIG HOLES TO BURY IT.
A hole dug to hide a cache is at a minimum dug to a depth of 16 to 40 inches (according to the volume of the item one wishes to conceal). In a majority of cases this depth of 16 to 40 inches will, over time, increase to a depth of 32 inches to 5 feet (a well-known phenomenon in archaeology). One might as well say that almost all of the countless hiding places over the course of the past centuries have not been discovered because it is common knowledge that VLF detectors are ineffective at such depths; They do not detect targets at depths over 16 inches. This is where the power of the pulse induction detectors come to our aid; the rate and importance of discoveries goes up with proper use of a pulse detector. (refer to the Lost or Hidden to learn more).
A hole dug to hide a cache is at a minimum dug to a depth of 16 to 40 inches (according to the volume of the item one wishes to conceal). In a majority of cases this depth of 16 to 40 inches will, over time, increase to a depth of 32 inches to 5 feet (a well-known phenomenon in archaeology). One might as well say that almost all of the countless hiding places over the course of the past centuries have not been discovered because it is common knowledge that VLF detectors are ineffective at such depths; They do not detect targets at depths over 16 inches. This is where the power of the pulse induction detectors come to our aid; the rate and importance of discoveries goes up with proper use of a pulse detector. (refer to the Lost or Hidden to learn more).