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What's the difference between the RC29 DD coil and a concentric coil for the Racer?
Nokta RC29 11x7 DD Search Coil for Racer Metal Detector
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Open May 20, 2026 - 11:41 AM
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Answer
May 20, 2026 - 11:41 AM
The RC29 uses a Double D winding configuration with two overlapping D-shaped transmit coils, creating a blade-shaped detection field that extends deeper into mineralized ground with less interference. A concentric coil has a circular outer transmit winding and a smaller inner receive winding, producing a cone-shaped field that offers slightly better pinpointing and target separation in clean soil but struggles more with ground mineralization and hot rocks. In iron-heavy parks or red clay, the RC29's DD design keeps the Racer quieter and more stable. In low-mineral sand or turf, a concentric coil can give you a small edge in target ID accuracy, but the RC29 is the more versatile all-around choice.
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Nokta RC29 11x7 DD Search Coil for Racer Metal Detector
The RC29 is the standard 11x7 search coil that ships with every Nokta Racer metal detector, delivering balanced depth and ground coverage across most detecting scenarios. Racer owners working parks, old home sites, or open fields rely on this DD coil's ability to punch through mineralized soil w...
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