Searching is done by sweeping the search coil left and right as quickly as is comfortable
and as close to the ground as possible. The exception to this rule is when searching for large
objects using low Reaction values (1 or 2) – in this case it is best to keep the search coil 20 cm
above the ground. Touching the ground with the search coil should be avoided, try to avoid
hitting it against rocks and other objects protruding from the ground. While the search coil is
designed to be resistant to damage when hit against hard objects, a more effective search will
be had if this can be avoided.
The search coil should be held parallel to the ground, as this is very important to ensure
an effective search. This is especially important when reaching the end of each left and right
swinging motion, as lifting here changes the distance from the ground. This changes the level of
the soil signal, which results in the filters having to process this, giving a decrease in search
efficiency. Over time try to get into the habit of moving the search coil parallel to the ground.
How fast you are able to search depends on your ability to sweep, however sweeping too
fast can cause a drop in effectiveness also, especially in very littered terrain. In Motion mode
with Discrimination, swinging the search coil too slowly will also decrease the effectiveness,
especially at higher Reaction values. For these reasons sweeping should be no slower than 0.3
m/s and no faster than 1.5 m/s.
To achieve the most accurate identification of a tiny object, the centre of the search coil
should move exactly over the buried object. To do this, use the Pinpoint function, start by
moving the search coil 40 – 50 cm away from the location where the object was first identified.
Lift the coil slightly and then pull the trigger, then move the coil back to the area where the
object was detected and try pinpointing its exact location with the strongest signal.
After determining where the object is buried, release the trigger and, while remembering
where the middle of the signal is, swing the search coil so that its middle moves over the object,
in quick, short movements of between 40 – 50 cm. This will confirm that the detected signal is in
the middle of the search coil – and not at its edge – which could cause false identification.
It is recommended to use headphones with this detector, as they will help in shielding
external noise. This will allow you to listen more closely to detector’s weakest signals,
increasing the technical capabilities, especially in All metal modes, where the sounds are more
subtle. When searching for the deepest objects, headphones should be an essential part of your
equipment.
RUTUS Alter71 ver. 2.0 22
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