Metal purchased ? Charge your batteries ? Shovel, carefully packing in a bag , put the door ? The place chosen for the campaign ? All of it? Before you go to a cop , we invite you once again to run through an important component of a successful campaign.
Setting the Ground
This factor is extremely important because it determines the depth of the detection device . It’s no secret that no matter what you did not dig the soil , there will always be interference to the free passage of electromagnetic signal of the detector . Interference give the remains of various minerals with different electrical conductivity (salinity and clay soil , ordinary red brick , a variety of baked pottery shards , etc.). Interference of this type generally referred to as ground mineralization , and this in turn – perhaps the most important factor that determines the depth of the search metal detector. Accordingly, the depth of detection of the metal detector , the sensitivity and discrimination of metals depends on how well the detector can ignore the background noise of the soil. Without the automatic settings on the ground can not do, when the purpose of a cop – free gold mineralized rocks are in fact his constant companions .
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Use the automatic setup on the ground and you save a maximum depth of detection of the metal detector , even if digging clay or soil salinity .
Deviation from electrical interference
Another important factor that affects the depth of search are electrical interference . For sure you can remember a lot of cases when you just had to make the detuning from electrical interference , for example, if several metal detectors work alongside you dig or near high-voltage lines .
searchcoils
Coils of small size are used with careful leisurely examination of the rich soil , to search in basements , attics , and if there is a strong salinity of the soil. With the reduction of the diameter of the coil is reduced by interference from nearby mineralization and underlying metal objects . A more clear – the smaller the interference , the greater the depth of localization clarity discriminator and detector sensitivity to small objects , especially if the detection frequency of about 13-18 kHz.
Most novice searchers are mistaken about the size of the search coil , considering the inexperience , of course, that a large coil survey of the area will go faster will be the maximum depth of detection , and the risk of passage goals will be kept to a minimum. And the use of , for example , 6 -inch coil will result in a flickering running around and shallow (surface ) search . This is not the case , look for large and medium- purpose large coil onto a blank space in the weakly mineralized soil – is justified if there is debris from iron or mineralized soil – with a large coil will listen to some glitches and phantom alarms.
The frequency of detection
The frequency of the detector , where the detection is carried out , determines the depth of the search and the sensitivity of the instrument. The high operating frequency such as 18 kHz , well localizes the small end, but quickly fading from the surface is not able to scan the soil deeply . Low operating frequency, for example 3 kHz , in contrast, is able to penetrate deeply into the soil , but the search for small targets are unavailable .
Now more detail. Minelab first company in the world market presented a multi-frequency metal detectors metal detectors . The new 28- frequency identification technology has been used in the manufacture of models such as the E-Trac, Explorer SE, Safari. FBS (Full Band Spectrum – full-frequency spectrum) allows the metal detector to search directly a 28- frequency ( 1.5 to 100 kHz ), but not at the same frequency . This, of course , makes detect both small and large objects that were not previously available single frequency metal detectors. quite frankly , we suggested to use such devices on difficult terrain , or in an open field .
Using headphones
Do not forget the headphones – they just need a professional search engine . Grab your headphones resistance of about 100 om , be sure to trusted manufacturers (Garrett and Whites), it is also important that they fit snugly inside your ear and you hear the signals as clearly as possible . It is very important to have headphones with coiled cord – not to be confused in the legs.
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