Answer
May 21, 2026 - 11:27 AM
The 11-inch FMF coil covers the full 4-45 kHz spectrum, either as simultaneous multi-frequency programs or as one of 49 selectable single frequencies. You can switch between frequency modes without swapping hardware by selecting a different frequency or program on the remote control. The 4 to 45 kHz range covers low-conductor work like small gold and micro-jewelry, and high-conductor work like deep silver and copper coins, on a single coil. Lock to one frequency for surgical work on a known target type, or run one of the multi-frequency programs when you need wide spectral response across mixed targets in a single sweep.
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