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New detector has a high sensitivity, fast and efficiently, Mode discrimination applies additional program processing, identify the type of metal detector and for certain purposes, Sea Hunter can be used under water with the short rod, The detector is shown on the display of digital rating metal and graphic discrimination scale Biscay 12 segments from -4 to +44, helping to identify the type of metal and customize, When the battery charge end detector will give a short beep, The current version of the page until it was checked by experienced participants and can, When a metal object near the appliance the signal, Cons – the worst possible discrimination found, Since then the detectors for United States airports are equipped with safety.
The Bounty Hunter Tracker IV is a great beginner metal detector, Three modes all metal, full discrimination, tone discrimination, At minimum or no discrimination, all metal within the detectable range is detected, You don’t drive everywhere at full speed. busting myths about metal detectors sensitivity, discrimination and depth, We quite naturally may form wrong ideas from our various metal detecting.
Metal Detector Discrimination
A Quick Guide to How Your Detector Sorts Treasure from Trash. A metal detector creates a magnetic field. When this field hits a metal object like a coin, it generates a small current in the coin, which in turn produces its own opposing magnetic field.
This opposition creates a measurable delay or 'phase shift.' The detector analyzes the amount of this shift, along with the object's size and depth, to identify what the object is.
Interpreting the Signal
The strength of the object's opposing magnetic field determines the amount of phase shift, telling the detector whether you've found junk or a potential treasure.
Weak Signal
Creates very little phase shift.
Indicates low-value targets.
Examples: Iron, foil, most pull tabs.
Strong Signal
Creates a significant phase shift.
Indicates more conductive, valuable targets.
Examples: Silver dimes, copper pennies, large coins.
Three Common Discrimination Systems
Example: VDI Numbers in Action
With a VDI system, users learn to associate specific number ranges with different targets, allowing for more precise digging decisions.
Junk (< 40)
Lower numbers typically represent iron and common trash like pull tabs (e.g., VDI 37).
Pennies (72-79)
Modern and older pennies consistently appear in this specific mid-to-high range.
Dimes & Quarters (>80)
Highly conductive silver and large coins register with the highest VDI numbers (e.g., 80+).
The Next Level in Detection
Beyond Phase Shift
The most advanced detectors now use a dual-analysis approach. They measure not only the phase shift but also the object's resistivity (its resistance to electrical current).
This combination allows for extremely fine-tuned discrimination, providing an even greater level of accuracy in identifying targets.
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