Minelab F3 Mine Detector Operation Manual page 43

To an experienced operator the shape of the mapped area can
indicate whether multiple targets may be present.
b. STEP 2
 The pitch of the Threshold Tone will rise or fall depending on the
combination of metals or the composition of metal in a mine. This
means that, in some instances, experienced operators may be
able to identify one mine against another (Figure 28).
 By slowly moving the coil across the mapped area, it may be
possible to detect tonal differences indicating multiple targets.
The volume from a large target may mask that of a small
target if the small target is located very close to the large
Figure 27: Mapping Multiple Targets
Determining the Centre of Target
**WARNING**
NOTE
target.
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