One of the most commonly asked questions I get when they talk treasure hunting is, “What’s the most effective metal detector?” Every individual asked that real question is going to have his/her own slant on the subject. Every one has their own experiences, with each having their unique “type” of treasure each goes for. I’m no different. So, I will give my “slant” and see if what I contribute will narrow the selection down a lttle bit.
First… and by far the most crucial criteria when deciding on a metallic detector is “choose metallic detector that you’re going to use.” I don’t care how fancy or expensive a metallic detector is… if all it can is sit within a corner with a jacket hanging over it, it is going to find no more treasure than a child’s toy. I say this, because i have observed individuals with a collection of metal detectors… some basic, plus some fancy… and lots of times they select the basic detector, because all the settings, controls, buttons, and what-nots around the fancy detector are merely too complicated for the kids. They don’t have fun with this; they don’t really realize it, and so they just don’t apply it. So, if you’re new to metal detecting, or don’t relish the idea of having to learn what those buttons, knobs, and screens do and mean, restoration you’re best having a more “basic” model, at least until you get experience and figure out what exactly you desire and will handle.
Metal detectors function that. They detect metal… all metal. Ferrous metal is iron based and is fascinated by a magnet (iron, steel, etc.). Non-ferrous metal isn’t iron based will not be fascinated by a magnet (aluminum, copper, nickel, silver, gold, platinum, etc.).
Ground Balancing – Many detectors will give you circuitry to manage mineralization from the soil. Mineralization may be due to salts, iron, “black sands,” “hot rocks” and other “hot” deposits that naturally occur. If you are planning on nugget-shooting (detecting for gold nuggets), opt for a machine which is created specifically for nugget-shooting. If you’re likely to be beach combing (detecting at the sea), choose a beach machine (not only is the circuitry better designed to handle the mineralization available at the beach, but a majority of are better designed to withstand the saltier environment). Should you be detecting at various locations, for example parks, fairgrounds, and other public facilities, a “general purpose” machine can do. Just remember, you need a machine by incorporating type of ground balancing capability.
Sensitivity – Most detectors may sensitivity adjustment. The search coil in the detector is actually an antenna that has an electromagnetic field emanating inside a pattern which is “shaped” with the type of the coil (round or elliptical are the most typical). The length (depth) it reaches is often a factor of output and frequency. When this field is disturbed by a target (metal), the circuitry senses the disturbance as well as the detector registers with sound and/or visually on the display (meter or graph). The sensitivity adjustment will permit the detector to sense this disturbance by smaller targets (at a given depth) or possibly a given target at a greater depth. The trade-off is that the more sensitivity, the higher the effect of non-target “junk” and mineralization. Setting the sensitivity excessive will cause false hits, approximately much electrical chaos that targets are missed, especially weak targets. A lot of sensitivity also can create a medium or large size target to “overwhelm” the circuit and cause it to blast an overload signal.
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