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yasban2000

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  1. one of the technical specifications of the the antennas is some thing called impedance (the coil is an antenna ) which means the the resistance of the coil components to the inductive current caused by the electromagnetic spectrum introduced by the detected metal or the surrounding material and this impedance might be a inductive or capacitive or a mix depending at the nature of the coil ingredients and measured with a unite called OHM any way these are a complicated technical details but the conclusion is if the impedance of any coils is matching the impedance of the other coil specified for using with a certain detector then this 2 coils will work properly with the same detector this is due to the similarity of the coil impedance with the detector other components total impedance. the reason of the coil and other detector components should match is to transmit the scanning signal from the detector to the target with the max power and to pass the reflected induction due to this signal from the target to the detector circuitry with the max power too this comes under the max power transmitting theory. so the summary is equal impedance of the coils means working properly one instead the other. good luck
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