Comprehensive Operating Manual & Guide to Metal Detecting
Comprehensive Operating Manual & Guide to Metal Detecting
40
5
F75
F75
Quick Start
Use your F75 right out of the box
1.
Assemble the detector (see instructions beginning page 4).
2
Install four AA
alkaline
batteries.
All positive (button-end) terminals point up.
Batteries are included with the detector.
3.
Turn the knob, located under the armrest, fully clockwise.
This turns the machine on and sets audio volume to maximum.
4. When first turned on, the
F75
starts out in the Discrimination mode, with:
Sensitivity preset to 60
Discrimination Level preset to 10
Number of Tones preset to 3
Process# preset to dE
Sweep the searchcoil from side to side, parallel to the ground. Keep the searchcoil
moving over the ground. If you stop moving the searchcoil, the sound will also stop.
Probable target type will be indicated at the top of the LCD screen.
5.
If the searchcoil is not in motion and not close to metal, the detector should be
silent.
6.
If you experience false signals from electrical interference, from the soil itself, or
from lots of trash metal, press the MENU button.
Sensitivity
will be highlighted.
Rotate the
Settings
knob to the left (counterclockwise),
Reduce the sensitivity setting until the false signals go away.
After 7 seconds, the machine will exit the menu and return to
normal operation.
7.
Find a patch of ground free of metal, toss a coin on the ground and sweep back and forth
over it a few times to get a feel for how the machine responds.
8.
You are now ready to search.
9. Pull and hold the trigger switch with your index finger to pinpoint the exact location of
targets, making them easier to unearth.
When the trigger is pulled, PinPoint is engaged ….
The searchcoil need not be in motion to detect an object.
The 2-digit numeric display indicates approximate target depth, in inches.
minerals, serious gold prospecting requires a detector with high sensitivity
and true ground balanced motion all metal operation. Run the
machine with the sensitivity high enough to hear some noise
from ground minerals, and
learn the language
of the
sounds you hear. Headphones are recommended
unless consideration for safety (for instance
rattlesnakes) rules them out. Move the searchcoil
slowly and deliberately, carefully controlling its
height above the ground to minimize noise from
iron minerals in the soil. If you hear ground
noise, your Ground Setting could be a bit
off, so perform the ground balancing
procedure again. As you walk even a
very short distance, ground conditions
can change. The ground geology
typically associated with gold will
tend to change over very short
distances.
The Fe
3
O
4
bar graph indicates the amount
of iron mineralization in the soil. In most gold fields,
especially alluvial (placer) deposits, gold tends to be
associated with iron minerals, especially magnetite
black sand.
If you know this to be the case in the area
you're working, you can maximize your gold recovery by
concentrating your effort on areas where the bar graph
indicates higher amounts of iron mineralization.
Gold prospectors are mostly a friendly bunch, and willing to
spend some time showing a beginner how to increase his
odds of finding the yellow stuff. Many will invite you to search
on their claims (if they have any) once they get to know you.
In some gold areas, a lot of the terrain is under claim, so you need
to learn how to recognize posted claims and stay off of them unless you have the claim
owner's permission. Prospecting clubs such as the GPAA often own claims which are open to
their members, and sponsor group outings to good
gold areas.
It’s a thrilling experience to dig into the ground and pull out a precious piece of yellow metal
that you are the first person on earth to see. If you love being outdoors, have patience, and
can stay motivated by the prospect of finding that next nugget, then
beeping for gold
may be
the hobby for you. While only a few get rich prospecting, if you are not among them, think of it
as outdoor recreation where your finds defray the expense of having fun!
Detecting Activities (continued)
Gold Prospecting (continued)
F75-MANUAL.qx6 8/15/07 9:42 AM Page 5
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