Metal Detector How It Works

The metal detection … Is this possible?
Ok, let's say I know an area of land, perhaps 10 square miles or so, when a person buried a large quantity of gold coins back in 1800. And nobody has been able to find, because he died in an accident and took his secret with him. How does a metal detector? Would it be possible to construct a large metal detector to scan large areas at once to find the coins? Or should a better way?
A metal detector works with a wire coil mounted below the sensing head, Wired in an oscillator. The inductance coil, and therefore the oscillator frequency will change when the metal is placed near the coil. Normally, the oscillator runs at an audible frequency and is fed directly a pair of headphones: the presence of metal is heard as a change in pitch. The larger the coil, more metal will need to bring that to have any effect on the frequency. Thus, a large metal detector would be less sensitive than a normal size one. Moreover, under the rules of Treasure Trove, gold or silver to find automatically belong to the Crown – unless he can prove that the former owner dropped. If prompted reporting on the discovery can be compensated – otherwise, could be considered stealing, if not treasonous.
remot control metal detector
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Discovery 2200 Metal Detector $184.99 Packed full of features, this lightweight, well-constructed and deep-seeking metal detector from Bounty Hunter features intuitive controls for easy use. Crafted in the USA, this model features a jumbo LCD display with digital target identification and depth readings for pinpoint locating. With no complex adjustments or settings to worry about, you’ll start having fun with this model from the first time out. The detector locates coins, rings, gold and relics. Use it at parks or at the beach. No matter how you look at it, the Discovery 2200 offers the best quality, price and features. To top it off, this model is backed by a full 5-year warranty. |
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Treasure Hunter Metal Detector $89.95 Treasure Hunter Metal Detector |
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Quick Draw II Metal Detector $197.94 Quick Draw II Metal Detector The Quick Draw II is equipped with a powerful Micro-chip Computer Circuit, which combines with Bounty Hunter’s Patented Technology to offer more features, performance and value than any other detector in its price range.Whether sweeping the searchcoil ultra fast or ultra slow, the Quick Draw II will detect targets with tremendous accuracy. Digital coin depth indicator tells you how deep to digYour choice of Variable Notch and Auto Notch ModesThree level iron discrimination for relic huntingNine segment digital target identification and three tone audio feedbackKey Features:8″ Coin Depth Detection3′ Large Object Detection2 9-volt Batteries requiredmotion all-metalProgressive DiscriminationAuto Notch SystemVariable Notch SystemThree-Tone Audio8″ Open Waterproof Coil |
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Pioneer 202 Metal Detector $185.05 Bounty Hunter Pioneer 202 Metal Detector |
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Quick Silver Metal Detector $118.75 Bounty Hunter Quick Silver Metal Detector |
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Fast Tracker Metal Detector $101.04 Bounty Hunter Fast Tracker Metal Detector |
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Tracker II Metal Detector $101.04 Bounty Hunter Tracker II Metal Detector |
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Lone Star Metal Detector $179.95 Bounty Hunter Lone Star Metal Detector |
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Gold Digger Metal Detector $71.25 Bounty Hunter Gold Digger Metal Detector |
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HEADW Metal Detector Headphones $34.99 Bounty Hunter HEADW Metal Detector Headphones are small and lightweight and are designed for use with bounty hunter metal detectors. |
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Bounty Hunter Metal Detector Binaural Headphone HEADW $37.02 Bounty Hunter Metal Detector Binaural Headphone HEADW |
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Bounty Hunter Metal Detector Carrying Bag CBAGW $30.25 Bounty Hunter Metal Detector Carrying Bag CBAGW |
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Pioneer EX Metal Detector $138.94 Pioneer EX Metal Detector Pioneer EX Metal DetectorEasy to use4-Segment digital target identificationOne-touch depth controlFully automatic ground balancePush-button discriminationVisual status indicators3-Tone audio target identification |
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Pioneer-202 Metal Detector $225.94 Pioneer-202 Metal Detector Pioneer 202 Metal DetectorAdvanced treasure huntingTouch pad control4 Modes of operationFully automatic Ground-Trac® ground balancing3-Tone target identificationProgressive iron discrimination |
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VLF 2.1 Metal Detector $66.94 VLF 2.1 Metal Detector Bounty Hunter VLF 2.1 VLF 2.1The Metal Detector with Discrimination and Sensitivity Control is a low cost metal detector that will get you up and running for hidden treasure in no time. The VLF 2-1 Metal Detector by Bounty Hunter is lightweight with an ergonomic design for easy handling and comfortable use. The Bounty Hunters Metal Detector will detect coin size objects up to 5″ deep and larger coins at up to 3 inches. This Bounty Hunter Metal Detector also has discrimination control that will eliminate iron and most unwanted objects and sensitivity control for maximizing depth detection. Bounty Hunter The Metal Detectors VLF 21 operates on 2 9V alkaline batteries.FeaturesDiscrimination control will eliminate iron and most unwanted itemsMaximize depth detection with sensitivity controlDetects coin-size objects up to 5″ deep and larger objects up to 3″Volume proportional to signal strength2 search modesVariable levels of discriminationPreset ground balanceLightweight, ergonomic design for easy handling & comfortable use6 inch weather resistant coilOperates on 2 9-volt alkaline batteries |