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May 21, 2026 - 11:26 AM
The 11-inch FMF coil balances ground coverage and target separation between the 9-inch and 13 x 11-inch models. The 9-inch coil offers tighter target separation in trashy ground, making it ideal for urban parks with dense iron. The 13 x 11-inch elliptical coil covers more ground per sweep, a time advantage on large open fields and beach transects. The 11-inch round coil weighs 1.03 pounds and delivers wider coverage than the 9-inch without the arm fatigue the larger 13 x 11-inch can cause during full-day hunts. All three coils share the same frequency range (4 to 45 kHz) and waterproof rating (20 meters).
