RELIC_HUNTER
New member
I was on another forum and a question was asked, if a coil is not marked WS or CON what test can be performed to determined one or the other.
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Concentric & Wide Scan Question
- Thread starter RELIC_HUNTER
- Start date
Both types will pinpoint in line with the center axis of the search coil, especially on deeper targets. That is presuming the target is like a coin and in a laying-flat position to the coil.
The easiest way to check out a coil is to tune it in the Discriminate mode then use a coin. Holding it flat-to-the coil (as if laying on the ground) bob the coin towards-and-away from the outer edges of the coil, maybe held about and inch or so below the coil. Note when you hear an audio response from the coil and how far from the edge o the coil the target is.
Generally, a Concentric coil will respond evenly from all positions around the coil as it is a very uniform EMF. A DD coil might respond a little closer near the front or rear center part of the coil, and it might salso respond a little better on one side of the coil tan the other. That's based on the different behavior of the Transmit and Receive coils on opposing sides. The DD or Wide-Scan coil will also have a narrower side-to-side response, and be slightly more responsive along a front-to-rear line than a Concentric. This might be noted more, too, if the coin test target is moved across the coil, or toward-and-away, when held about 3" from the coil, maybe 4" depending upon the coil size and the Sensitivity level.
Monte
PS: If in doubt you could ship the detector and both coils to me and I will check them all out in-the-field and return them, after working a few ghost towns this summer, with a not for you as to which coil is which.
The easiest way to check out a coil is to tune it in the Discriminate mode then use a coin. Holding it flat-to-the coil (as if laying on the ground) bob the coin towards-and-away from the outer edges of the coil, maybe held about and inch or so below the coil. Note when you hear an audio response from the coil and how far from the edge o the coil the target is.
Generally, a Concentric coil will respond evenly from all positions around the coil as it is a very uniform EMF. A DD coil might respond a little closer near the front or rear center part of the coil, and it might salso respond a little better on one side of the coil tan the other. That's based on the different behavior of the Transmit and Receive coils on opposing sides. The DD or Wide-Scan coil will also have a narrower side-to-side response, and be slightly more responsive along a front-to-rear line than a Concentric. This might be noted more, too, if the coin test target is moved across the coil, or toward-and-away, when held about 3" from the coil, maybe 4" depending upon the coil size and the Sensitivity level.
Monte
PS: If in doubt you could ship the detector and both coils to me and I will check them all out in-the-field and return them, after working a few ghost towns this summer, with a not for you as to which coil is which.