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May 21, 2026 - 11:27 AM
The 11-inch FMF coil offers 49 selectable single frequencies from 4 to 45 kHz, plus simultaneous multi-frequency programs that transmit multiple frequencies at once. Lower frequencies like 4 to 8 kHz penetrate deeper and work well for high-conductor targets like silver and copper coins. Mid-range frequencies around 10 to 20 kHz balance depth and sensitivity for general-purpose hunting. Higher frequencies from 30 to 45 kHz maximize sensitivity to small low-conductor targets like gold jewelry and micro-relics. The multi-frequency programs cover the full spectrum in a single sweep, eliminating the need to swap frequencies when working mixed-target sites.
