Field Use & Tuning - Whites Goldmaster Serie Guia Del Propietario

GMX SPORT Searching
Field Use & Tuning Tips
Putting it all together:
Once you have achieved the initial ground balance, you are ready to start searching.
Move the coil just over the ground and listen for the distinct zip-zip sound produced by
a target. It is wise to plant a nugget just under the soil to practice on in order to learn
to recognize what it will sound like. If you don't have a nugget, use a nickel or piece of
lead (sinker or bullet). A very shallow bird shot sounds just like a tiny piece of gold. You
can practice with different sized nuggets and at different depths. Remember, planting a
target disturbs the ground mineral, which usually reduces the depth it would have been
found in undisturbed ground. It will take practice to determine the proper search speed
and technique. Do not go too fast. Try to overlap your sweep path so that you won't miss
the tiny and deeper nuggets. When you hear a zip-zip, perform the "X" pinpoint technique
or use the non-motion pinpoint feature (page 16) over the loudest portion and eyeball the
center.
Rather than concentrating on all of the controls of the detector, think of the detector's
systems as an extension of your senses that are working together to tell you what is be-
low ground. You will be tuning yourself to the search area. The SENSITIVITY, the GROUND
BALANCE, the VSAT speed, the THRESHOLD, the IRON CANCEL, all working together at
the same time. Soon the detector will not even be noticed and your senses will take over,
painting a mental picture of what lies below.
Dig ALL Metal Targets at first, then Reject Iron:
At first, dig all targets until you get used to the sound of various items. As with other VLF
detectors, a nail or oblong piece of iron laying horizontally will produce a double beep. A
"good target" is considered anything that is not IRON. You want to detect lead, brass,
copper, aluminum and silver. Any of these metals can simulate the sound of a gold nug-
get and must be dug. Keep a particular lookout for the tiny lead bird-shot so common in
mining areas. If you are detecting these tiny targets, you are doing everything right and
will eventually find gold.
Locked GROUND BALANCE tuning for very small nuggets:
While the XGB automatic ground balance makes nugget hunting easy for prospectors of
all experience levels, a LOCKED ground balance can greatly improve your odds of finding
gold in some situations.
The reason for this is simple - the smallest nuggets can produce only a slight threshold
raise, and often vary only a few phase degrees off of the ground due to their tiny size. If
small gold is your gold, locking the ground tracking allows those faint variances to push
through the ground balance point and create a target signal for the GMX.
However, in challenging ground conditions this is not always an option. This is where
using the Ground Grab feature is useful, as you can manually update the ground balance
at any point as you detect.
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