Terminology. Fisher Gold Bug DP
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TERMINOLOGY
The following terms are used throughout the manual, and are standard terminology among treasure hunters.
ELIMINATION
Reference to a metal being "eliminated" means that the detector will not emit a tone, nor light up an indicator, when a specified object passes through the searchcoil’s detection field.
DISCRIMINATION
When the detector emits different tones for different types of metals, and when the detector "eliminates" certain metals, we refer to this as the detector "discriminating" among different types of metals.
Discrimination is an essential feature of professional metal detectors.
Discrimination allows the user to ignore trash and other undesirable objects.
RELIC
A relic is an object of interest by reason of its age or its association with the past. Many relics are made of iron, but can also be made of bronze or precious metals.
IRON
Iron is a common, low-grade metal that is an undesirable target in certain metal detecting applications. Examples of undesirable iron objects are old cans, pipes, bolts and nails.
Sometimes, the desired target is made of iron. Property markers, for instance, contain iron. Valuable relics can also be composed of iron; cannon balls, old armaments, and parts of old structures and vehicles can also be composed of iron.
FERROUS
Metals which are made of, or contain, iron.
PINPOINTING
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Pinpointing is the process of finding the exact location of a buried object.
Long-buried metals can appear to the eye exactly like the surrounding soil, and can therefore be very hard to isolate from the soil.
PULL-TABS
Discarded pull-tabs from beverage containers are an especially bothersome trash item for treasure hunters. They come in many different shapes and sizes. Pull-tabs can be eliminated from detection, but some other valuable objects can have a magnetic signature similar to pull-tabs, and will also be eliminated when discriminating out pull-tabs.
GROUND BALANCE
Ground Balancing is the ability of the detector to ignore, or "see through" the earth’s naturally occurring minerals, and only sound a tone when a metal object is detected. The Gold Bug incorporates proprietary circuitry and programming to eliminate false signals from severe ground conditions.
Relic-Hunting and Coin-Shooting with the Optional 11” DD Searchcoil
While the Gold Bug is a high performance, specialized gold prospecting metal detector, it is also a good multi-purpose detector. With the purchase of an 11”
DD searchcoil, you can bring more power to your coin-shooting and relichunting searches.
The standard 5” Gold Bug searchcoil is engineered for precision and is best at finding the smallest gold nuggets that most other gold prospecting detectors would miss.
If you want a larger sweep area and deeper detection, the 11” DD should be considered.
Advantages of the 11” DD searchcoil over the standard 5” searchcoil are:
1 Deeper detection
2. Broader sweep (cover more area in less time)
Disadvantages of the 11” DD searchcoil are:
1. Less separation between adjacent buried targets.
Not as good at extremely trashy sites.
2. Loss of sensitivity to the tiniest gold pieces.
3. Does not fit into tight spaces as well.
Notice:
If you use the 11” DD searchcoil, DO NOT install a rubber washer at the searchcoil connection point.
For information about the 11”DD searchcoil
(part# 11COIL-GB, MSRP=$199.95),
please call 800-685-5050.
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