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May 20, 2026 - 12:47 PM
The open-frame design reduces weight for comfortable extended hunts. The design reduces the coil's overall mass, which translates to less arm fatigue during long hunts. The open-frame design handles various terrain types effectively. In trashy ground, the open frame helps the CF77's discrimination circuitry isolate individual targets. For detectorists interested in how coil construction impacts detection performance, our metal detector technologies page explains the trade-offs between open-frame and closed-shell designs.
