Coil (Double D/M/Cancel)
Figure 4.21
Changes the sensitivity and search pattern of the coil to allow the
GP 3000 range of Double D coils to become multi-versatile coils with
different characteristics to suit different environments. This is achieved by
altering the pattern of transmit (TX) and receive (RX) fields of the coil
and how the control box interprets the response.
• Double D can be used in most areas of medium to very high
mineralisation, being the most able to cope with ground noise. It is
also excellent for pinpointing targets as the response is strongest
from the centre of the coil.
• M (Mono) may be used in most locations of low to medium
mineralisation and for locating small nuggets with Soil switch set to
Sensitive. Pinpointing is not centred in the middle of the coil, but to
one side and may give a complex signal when the target is very
close to the coil.
• Cancel may be used in areas with very high electrical interference
where the Tune function has difficulty selecting a quiet operational
frequency (e.g.: near power lines, electric fences or under poor
atmospheric conditions).
CONTROL FUNCTIONS
Figure 4.21 Coil switch
• Sensitive may be used when searching for small nuggets,
especially in areas with highly mineralised soil. The extra
stability allows the coil to be used closer to the ground in areas
of excessive ground noise. Sensitive may not work well if the
ground is salty.
This setting may also reduce the depth at which large nuggets
are likely to be found.
• Salt may be used in areas containing high salt content, be they
neutral or heavily mineralised. In highly mineralised areas
without salt, this setting may be less sensitive than Normal or
Sensitive to small nuggets.
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CONTROLS
Coil
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