Genuine Tesoro
Accessories
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(Standard) Detector Bag - full length - Padded Cordura
$31.96
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Small Carry Bag
$32.00
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Body Mount Pouch $15.96
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Large Rain Jacket (Cortés & Tejon)
$19.16 |
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Small Rain Jacket (all µMax)
$17.56 |
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Treasure Pouch $17.96 |
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ABS Lower Pole
$19.20 |
Searchcoils
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There are two main types of
searchcoils currently on the market—the concentric and the widescan.
The concentric coil uses two round
antennas, one inside the other. This coil is used on most detectors that
are designed for coin, jewelry, and relic hunting. Concentric coils
discriminate very well and pinpoint very easily because the strongest
signal is always in the center of the coil.
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Widescan coils use two D-shaped antennas
that are placed back to back. Because of this configuration, they are also
called “double-d” coils. The widescan coil is less affected by
mineralization than the concentric, so it is generally used for gold
prospecting or relic hunting in bad ground. Pinpointing is done with the
heel or toe of the coil. After determining the type of coil that is best for
your type of hunting, the next thing to consider is the size.
There are many different sizes of coils
available and each one may fine tune your hunting but only if you get the
correct size. Larger coils go deeper than smaller coils but only on larger
targets. When using a large coil, you may lose sensitivity to small targets.
A large coil is also more susceptible to masking. Masking happens in the
discriminate mode when a good target and junk target are both under the coil
at the same time. If the targets are close enough together, the bad target
will be discriminated out, and at the same time, the detector will not be
able to pick up the good target. Masking is very common in junky playgrounds
and in-and-around old house sites. Smaller coils will concentrate the signal
and make the detector more sensitive to the little targets. Unfortunately,
smaller coils tend to lose depth when compared to their larger cousins.
Being that these coils don’t have as wide a search pattern, they are also
less likely to mask targets in trashy hunting situations.
The 9 x 8 and the 12 x 10 are spoked coils that use Sinusoidal Technology.
This technology creates a detection bubble that works from the center of the
coil to beyond its edges. These coils produce an infinite number of
electromagnetic flux lines, which surround the coil and penetrate deep into
the ground. As targets pass through the bubble, they start interfering with
or breaking the flux lines. The detector reads the interruption of flux
lines and a signal is produced. When you saturate the ground with these flux
lines, you’re guaranteed better sensitivity to smaller targets and more
depth on larger targets.
The Clean Sweep (18” by 3.6”) uses
widescan technology to provide tip-to-tip sensitivity. A wider detecting
sweep means less time over unproductive ground and more time finding the
goodies you want. The widescan design resists changes in mineralization.
Another style, the Printed Spiral, is made
only by Tesoro for use with pulse induction circuitry. It offers good
sensitivity to a broader range of target sizes and improved sensitivity to
less conductive targets such as fine gold chains.
Knowing where you are going to hunt and
what you are hunting for will go a long way in helping you choose the right
coil for your needs. A larger coil is needed when hunting in a clean area or
when hunting for relics that may tend to be deeper. A small coil will help
find the smaller targets such as gold nuggets or fine jewelry or can be used
when coin & jewelry hunting extremely trashy sites.
All searchcoils are electrostatically
shielded and waterproof.
