X-Terra 9' Concentric 18.75kHz Round Coil for per X-TERRA 70 e X-TERRA 50
X-Terra 9" Concentric coils are preferred for coin and treasure hunting, as the concentrated search field provides accurate pinpointing and improved target identification. The 18.75kHz frequency of the 9" Concentric coil improves the detection of low conductive targets, such as, small coins and jewellery. The higher frequency of operation also improves audio stability over wet beach sand.
X-Terra 9' Concentric 3kHz Round coil for X-TERRA 70
The 3kHz coil gives improved depth on highly conductive metals, such as, Silver and Copper coins, as well as other larger metal objects.
X-Terra 9' Concentric 7,5kHz Round coil standard on r X-TERRA 70, X-TERRA 50 e X-TERRA 30