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Hot Rock
An individual rock which has a high degree
of mineralisation in comparison to the
surrounding ground around it. Due to this
difference the detector does not have
the opportunity to Ground Balance to the
individual hot rock so therefore gives a false
signal. The signal will diminish rapidly by
increasing the coil height above the hot rock.
Interference
Electricity or radio waves in the area being
detected can cause instability or chattering of
the Threshold. Interference commonly occurs
due to power lines, underground cables, radar,
other detectors or climatic conditions like
thunderstorms.
Mineralisation
Most ground contains some minerals, which
can cause false ground signals to be detected.
Heavily mineralised ground requires different
detector processing than does neutral or
lightly mineralised ground. Ground containing
heavy salt concentrations require entirely
different processing again.
Monoloop Coils
Monoloop coils are the style of coil where the
multiple strands of wire are wound in a single
loop around the circumference of the coil.
The field of search of Monoloop coils tends to
be cone shaped. They provide greater depth
and sensitivity compared to a Double D coil of
equivalent size in low-medium mineralisation.
Non-Ferrous Metals
Metals which do not contain significant levels
of iron. Non-magnetic metals such as Gold,
Silver, Copper, Brass, Lead or Aluminium.
Pinpoint
The method for determining the precise
location of a target prior to digging.
Pinpointing uses the design of the search coil
windings to determine the exact position of
the detected target.
Rx (Receive)
Refers to the response, or electromagnetic
field, which is received back by the coil and is
used by the control box circuitry to detect a
metal item in the ground.
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