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The chart below shows how your GoldBug2’s sensitivity and ability
to operate in mineralized soil is affected by each combination of
MINERALIZATION and MODE settings.
In either the BOOST or NORMAL mode, the GoldBug2’s sensitivity
decreases as you increase MINERALIZATION settings from LOW to HIGH.
MINERALIZATION CONTROL
In general, you should start searching with the MINERALIZATION set to
LOW. If you experience too much “ground chatter”, even after adjusting
the GROUND REJECT in the LOW MINERALIZATION mode, try reducing
the sensitivity or set the MINERALIZATION to NORMAL. If that does
not do the trick, set the MINERALIZATION to HIGH and readjust the
GROUND REJECT control. If there is still to much “ground chatter,”
reduce the SENSITIVITY .
In the LOW MINERALIZATION setting, the searchcoil response (retune
speed) is slow and the circuit gain (amplification) is high. In the NORMAL
MINERALIZATION setting, searchcoil response is fast and the circuit
gain is reduced slightly. In the HIGH setting, response is fast and the
gain is further reduced.
Moist, alkali soil conditions will usually require use of the NORMAL or
HIGH MINERALIZATION settings. Heavy, black sand conditions will
usually require the HIGH MINERALIZATION setting.
MODE AND MINERALIZATION BUTTON SELECTION
Mineralization
setting in
NORMAL MODE
Figure 7.
A false signal occurs when something that should not sound like a good
target sounds like one. For example, the GoldBug2 may detect metal in
your boots if you swing your searchcoil too close to your feet. Here are
some other sources of false signals, and here is what to do about them.
1. Hot Rocks: Mineralized rocks that respond like metal.
Solutions: Most hot rocks seem to be on top of the ground, so
you can just kick them out of the way and recheck the ground
beneath them. The GoldBug2 will ignore some hot rocks. Certain
other types of hot rocks have their own distinctive sound, which
you will learn to recognize. Or you can “tune-out” most hot rocks
in the air or on the ground by adjusting the GROUND REJECT
knob right over the rock. If is a nugget, you will not be able to
tune it out unless is very small. Many strong hot-rock signals will
disappear rapidly when you lower the sensitivity level, whereas
a strong nugget signal will just get weaker. Of course, the best
way to check a possible hot rock is to flip your mode switch
into “DISC mode”.
2. Highly Mineralized Soil: Unfortunately, this is where most
nuggets are found. The GoldBug2 will handle all but the very
worst soil.
Solutions: Switch to the HIGH mineralization setting. Ground
adjust very carefully and often. Lower the sensitivity. Ground
adjust to a height just high enough to eliminate most false
signals and adjust your stem length to sweep at that height.
3. Dissolved Salts: On a wet ocean beach or moist inland soil.
Solutions:
Same as highly mineralized soil.
FALSE SIGNALS
