Minelab F3 Operation Manual page 39

Extreme care must be taken when mapping the target to
ensure that the coil does not touch the ground (or any
exposed parts of the mine) or snag on any previously
For large minimum metal anti-tank mines, it is possible
that the area mapped out may be less than the actual
After an initial detection, if the coil is repeatedly swept
over a small deeply buried target, the response may
fade. If this occurs, move the coil away from the target
and perform an Audio Reset procedure (Section 5.3.b)
then return to the target location and continue with the
b. STEP 2
•
In Step 1, the area of a target was determined. If the metal in
the target is sufficiently small, the area mapped will also be small
and therefore it is a relatively simple matter to pin-point the
centre of the target.
•
For larger targets, to determine the centre, the coil should be
slowly moved across the mapped area. As the coil approaches
the centre of the target, the threshold tone will increase to a
maximum volume (pitch may be high or low depending on the
composition of the metal). Where maximum volume is achieved,
the coil can be considered to be above the centre of the target.
•
Once confirmed, local Standard Operating Procedures should be
followed to mark the target.
**WARNING**
undetected trip wires.
area of the mine.
pin-pointing procedure.
Determine Centre of Target
38