15
When your Gold Bug™-2 is properly tuned or “ground balanced,” it will
have only a minimum response to ground minerals when the searchcoil is
raised or lowered. Precise adjustment of the GROUND REJECT control
is critical to your success. The lower the MINERALIZATION or the higher
the SENSITIVITY settings, the more important it is to maintain proper
ground rejection.
If you change the MINERALIZATION
setting, you may have to retune your
Gold Bug™-2 slightly to maintain
optimum performance. However, the
GROUND REJECT setting should be
close enough for pinpointing or for a
quick check in one of the other modes.
At worst, a change in modes will require
only a quick fine tuning.
To tune your Gold Bug™-2, follow these steps:
1
. With your controls still set as
described in the “Turn On Procedure”
(See page 14), hold the searchcoil
parallel to and about 6-inches
above the ground.
2
. Lower the coil to within an inch or
two of the ground and quickly raise
it. Note that the threshold tone
becomes louder as you lower the
coil, disappears when you raised it
and finally returns to normal when
you hold it 6-inches above ground.
Figure 10.
Tune your Gold Bug™-2 by bobbing the
searchcoil up and down while adjusting
the GROUND REJECT control.
The GROUND REJECT control
consists of a coarse-adjustment
knob on top of a fine-adjustment
knob.
Figure 9.
18
you also slightly decrease the sensitivity of your Gold Bug™-2,
and the retune speed increases slightly. This increase in the
retune speed helps your Gold Bug™-2 ignore abrupt changes
in ground mineralization and hot rocks, but it also results in a
slight decrease in sensitivity.
8
. If, after switching to NORMAL MINERALIZATION, you continue
to hear ground chatter and false signals, back off on the
SENSITIVITY control again. Still having problems? You must
be in an area of extremely high mineralization. The only way to
hunt this area is in the HIGH MINERALIZATION setting with the
MODE switch in NORMAL. As in the other MINERALIZATION
settings, back off on the SENSITIVITY control and readjust
the GROUND REJECT control as needed.
9
. Avoid hunting in the IRON DISC Mode unless the area is so
littered with ferrous trash that it’s impossible to hunt in any other
way. The IRON DISC Mode will cause your Gold Bug™-2 to
ignore ferrous objects and hot rocks, but it may also cause
you to miss small
gold nuggets. We
recommend that you
hunt in either the
NORMAL or AUDIO
BOOST Modes, and
switch to the IRON
DISC Mode to check
a target
that has
already been dug.
Targets often come
out of the ground
covered with dirt,
and it’s impossible to
tell if they’re ferrous
or gold. The IRON
Figure 12.
Keep the bottom of your searchcoil parallel to the ground
while sweeping it in a tight semicircle.
GROUnd ReJeCT PROCedURe
SEARCHING
(continued)
