Ground Reject Procedure; Searching; Pinpointing; False Signals - Fisher M-Scope Gold Bug 2 Operating Manual

SEARCHING

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
Figure 12.
Keep the bottom of your search coil parallel to the
ground while sweeping it in a tight semicircle.
18

GoldBug2-.indd 15

gold nuggets. We
recommend that
you hunt in either the
NORMAL or AUDIO
B O O S T m o d e s ,
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 DISC

GROUND REJECT PROCEDURE

When your Gold Bug-2 is properly tuned or "ground balanced,"
it will have only a minimum response to ground minerals when
the search coil 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.
Figure 10.
Tune your Gold Bug-2 by bobbing
the search coil up and down while
a d j u s t i n g t h e G R O U N D R E J E C T
control.
Figure 9.
T h e G R O U N D R E J E C T
control consists of a coarse-
adjustment knob on top of a
fine-adjustment knob.
To tune your Gold Bug-2, follow
these steps:
1. With your controls still set as
described in the "Tur n On
Procedure" (See page 12),
hold the search coil 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.
6/13/06 2:51:19 PM
15