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May 20, 2026 - 04:16 PM
The IM19 coil's waterproof construction and DD configuration make it effective for saltwater surf-zone detecting when used with the Nokta Impact. The DD field pattern reduces ground noise from conductive wet sand and salt mineralization, allowing stable threshold and target ID at moderate sensitivity settings. The IM19 handles the transition from dry sand to wet sand without constant ground-balance adjustments, and the narrow profile cuts through shell debris and seaweed to isolate rings and coins. The coil can be fully submerged in surf. Consult your Impact manual for control box specifications regarding water exposure.
