CTX 3030 coil is specially designed for searching operations in the most unpredictable conditions. The device is totally waterproof and works at the depths of up to 3 meters. Coil type is Double-D. It is a universal model meant for target detection in the ground layers up to 120 cm thick. 
Features:
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Diameter – 27 cm (11 inches)
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Operating frequency - from 1.5 up to 100 kHz
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Clear object differentiation
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Waterproof properties
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Tonal identification.