Choosing the right metal detector Copy In the category Metal Detectors more articles and learn more information about Choosing the right metal detector Copy Reviews Price Specifications Features Image manuals videos Accessories All this in metal detectors for gold.
One of the important criteria when choosing a metal detector is the operating frequency of the device. In this case, the capabilities of the main unit are included – the actual operating frequency is determined by the characteristics of the installed coil.
The general rule in this matter is: the higher the frequency, the smaller the objects the metal detector can recognize, and the shallower the detection depth. Note that most models do not support a single value, but rather a range.
Based on detection frequencies, metal detectors can be divided into the following groups:
up to 5 kHz – search for mainly large metal objects at great depths;
from 6 to 10 kHz – universal equipment that already “catches” fairly small objects such as coins at medium depths;
11 to 15 kHz – search for small objects at shallow depths (coins, jewelry, etc.);
From 15 kHz and above – look for the smallest objects (in particular, nuggets) located close to the soil surface.
Besides the detection frequency, the shape and size of the coil play an essential role in the search. Thus, oval-shaped models with a diameter of 9-12 inches are the most convenient to use – these reels are excellent for both beginners and experienced drillers.
These types of coils often come standard with a metal detector. The search depth and speed also depend on the file size. Small coils (5-9 inches) are better at “seeing” small objects, but are unable to look deeply into the ground. Large files (13-20 inches) end deep, but they don’t do a good job of indicating the exact location of the object, which is why you have to drill a larger hole.
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