Nokta RC18C 7" Concentric Search Coil for Racer and Racer 2 Metal Detectors

The Nokta RC18C 7" Concentric Search Coil is a waterproof replacement coil designed for the Racer and Racer 2 metal detectors, delivering cleaner target signals in trashy sites through its concentric configuration. Racer owners working coin-heavy parks, schoolyards, and low-mineralization beaches need the tighter target separation this 7-inch coil provides over the stock 11-inch option. The concentric design excels in clean ground conditions where precise target identification matters more than maximum depth, making it the go-to upgrade for detectorists who spend most of their time in urban environments with dense trash.

What's Included with the Nokta RC18C

• Nokta RC18C 7" Concentric Search Coil for Racer Series

Why Racer Series Owners Reach for the RC18C

• Cleaner target response in trashy areas, the concentric configuration isolates signals from adjacent targets better than DD coils in non-mineralized ground, letting you hear the good target under the trash
• Compact 7-inch footprint fits between obstacles, maneuver around playground equipment, tight fence lines, and bleacher bases where an 11-inch coil drags or bumps
• Improved shallow-target discrimination, the focused detection field gives sharper audio on coins and jewelry in the 0-6 inch range, critical for modern drops in high-traffic sites
• Plug-and-play compatibility, wired connection to Racer and Racer 2 detectors with no firmware updates or adapter required
• Waterproof construction, run the coil in wet grass, shallow creeks, and surf without worrying about seal failure

Tighter Target Separation in Urban Trash

Park Benches and Playground Perimeters

The RC18C's concentric field pattern pulls cleaner audio from coin-sized targets sitting 2 inches from pull tabs and foil wads. We've used this coil in tot lots where larger coils may give blended signals, the 7-inch concentric lets you hear the dime under the aluminum scrap. The smaller diameter also lets you swing between chain-link fence posts and under park benches without the coil shell catching on metal structures. Racer owners hunting modern parks with moderate trash density see faster target recovery because the coil's focused field reduces the masking effect of adjacent junk.

Low-Mineralization Beach Hunting

Concentric coils perform best in ground with minimal iron mineralization, which makes the RC18C a strong fit for dry sand and wet sand on freshwater beaches or low-mineral saltwater sites. The coil's open configuration delivers sharper target ID on shallow jewelry and coins compared to a DD coil in the same ground conditions. Detectorists working the towel line and volleyball courts appreciate the maneuverability, you can work tight patterns around beach furniture and swing close to wooden posts without the coil's tail dragging. The waterproof rating supports surf hunting in calm conditions, though heavily mineralized black sand will reduce the concentric coil's discrimination advantage.

Specifications

• Compatibility: Nokta Racer, Nokta Racer 2
• Coil Size: 7 inches
• Configuration: Concentric (Open)
• Connection: Wired
• Waterproof: Yes

Why Buy from Serious Detecting

We're an authorized Nokta dealer, which means your RC18C ships with the manufacturer warranty and our team's direct support. Our staff runs Nokta metal detectors in the field and can answer setup questions specific to the Racer platform. Every order ships free, you have 30 days to return it if the coil doesn't fit your hunting style, and we price-match any lower advertised price on the same SKU. Understanding the technologies behind modern detectors helps you pick the right coil for your ground conditions, concentric coils trade depth for discrimination, and that tradeoff makes sense in low-mineral urban sites where most targets sit in the top 6 inches.