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The
COBRA Beach Magnet
is a high powered underwater
metal detector that is easy to use. With a fully automatic circuitry
that handles the ground balancing and tuning for you. The
COBRA
Beach Magnet
is perfect for hunting on any wet beach or where
high moisture becomes a problem.
Exclusive Features of the COBRA Beach Magnet:
• State-of-the-art high reliable circuitry.
• Full automatic tuning.
• Full automatic ground balancing.
• Full range VLF discrimination.
• Target response light.
• Volume control.
• Detection depth control.
• Audio battery test.
• The Detector is fully
water resistant to 132 feet
.
GLOSSARY OF TERMS
Air Test -
A sensitivity test performed by
outwardly moving various sized metal
samples under the metal detector search-
coil to measure the distance limit of detec-
tion. This test is not always an accurate
indicator of ground depth penetration ca-
pability. (
See Bench Test
)
Alkaline -
A class of battery characterized
by the ability to sustain longer periods
of current drain and greater storage life
when compared to the standard carbon-
zinc type.
Bench Test -
An air test to determine at
what discriminate settings various metal
samples are rejected or accepted. The test
is conducted in a non-metallic area.
Cache -
Any intentionally buried or se-
creted hoard of valuables.
Conductivity -
The measure of a metal
target's ability to allow eddy current gen-
eration on its surface.
Control Housing -
A metal or plastic box
which holds circuit boards, indicators, me-
ter, controls and power supply.
Depth Penetration -
The greatest mea-
sure of metal detector ability to transmit an
electromagnetic field into the soil matrix
and produce a target signal.
Discrimination -
Adjustable circuitry
which ignores or nulls audio responses
from a specific conductivity range allow-
ing positive responses to be heard from
metals higher in conductivity above the
discriminate control setting. Designed
primarily to eliminate audio response from
trash metals.
Double Blip -
A signal characteristic com-
mon to elongated ferrous targets such as
nails detected in the all-metal non-motion
mode.
Faint Signal -
A sound characteristic of
targets that are sometimes deeply buried
or very small in size.
False Signal -
An erroneous signal cre-
ated by automatic retuning overshoot,
ground voids or highly mineralized hot
rocks.
Ferrous -
Descriptive of any iron or iron
bearing material.
Metal -
Metallic substances; iron, foil,
nickel, aluminum, gold, brass, lead, cop-
per, silver, etc.
Metal Detectorist -
A person operating
a metal detector in the field. This name is
preferred by many over Treasure Hunter.
Mineralized Ground -
any soil that
contains conductive or non-conductive
components.
Motion Discriminator -
A detector type
that requires searchcoil motion to activate
its simultaneous ground balance and dis-
criminate functions.
Non-Ferrous -
Not of iron. Metals of the
precious class (i.e. gold, silver, copper,
etc.)
Pinpointing -
Finding the exact target
location with respect to a searchcoil's des-
ignated center. Accomplished by interpret-
ing the centers of audio response width in
perpendicular direction or scans.
Searchcoil -
A circular (can be other
shapes) plastic housing containing single
or multiple transmit and receive windings
in a specific orientation or configuration to
emit and receive signals from ground and
targets. (also called loop or coil).
Searchcoil Cable -
An electrostatically
shielded cable of conductors (wires) which
convey signals to/from the searchcoil or
control housing.
Sensitivity -
The measure or capacity of
a metal detector to perceive changes in
conductivity within the detection pattern.
Generally, the more sensitivity a detector
can smoothly provide, the more depth it
will achieve.
Signal -
An audio response or visual in-
dication alerting the operator that a target
has been detected.
Slow Motion -
A description of searchcoil
speed required to operate the motion dis-
criminate mode.
Sweep -
the motion one employs in mov-
ing the coil.
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