Nokta GK19 7.5x4" DD Waterproof Coil for Gold Kruzer

The GK19 coil is engineered exclusively for the Nokta Gold Kruzer. It is not compatible with the standard Kruzer or Multi Kruzer models, as the operating frequency and internal electronics are completely different. Be sure to verify your specific detector model before ordering to ensure correct connector fitting and operational stability.

The GK19 measures 7.5 inches by 4 inches in an elliptical footprint, making it one of the smallest coils available for the Gold Kruzer. The compact size reduces swing weight compared to the stock 10x5.5" coil, which helps during long prospecting sessions over rocky ground. Nokta does not publish an exact weight specification for the GK19, but prospectors report noticeably lighter handling when switching from the standard coil. The reduced size and weight combination makes it easier to work tight spaces between boulders and along bedrock crevices where larger coils require constant repositioning.

The GK19 is fully waterproof and can be submerged during creek and specifically built for creek and river hunting. It allows prospectors to work right in the water to sweep submerged gravel bars and exposed bedrock cracks where gold concentrates. However, always remember that while the search coil is submersible, you must keep your detector's control housing safe from complete submersion depending on your primary detector unit's specs.

The Double-D (DD) configuration is highly effective at handling heavy iron trash and mineralization common in gold country. Its specialized geometry helps separate non-ferrous gold signals from iron trash like square nails and metal debris. This significantly reduces false signals across exposed bedrock and hot soils, allowing you to focus on valid targets.

The GK19 excels in bedrock hunting, boulder fields, tailings piles, and any scenario where access matters more than depth. When you're working fracture lines in exposed bedrock, rock piles left by dredge operations, or tight spaces between boulders, the 7.5x4" footprint fits where the 10x5.5" stock coil can't reach. Prospectors also favor the GK19 in trashy areas with heavy iron contamination, the smaller coil isolates individual targets better than a larger sweep. If you're hunting open ground with decent soil cover and want maximum depth, the stock coil's larger detection field is the better choice. For more specialized detector options, explore Nokta metal detectors to match your primary hunting environment.

Yes, the GK19 ships with a protective coil cover and mounting hardware included in the package. The cover protects the coil's bottom surface from abrasion when you're sweeping across bedrock, rocks, and gravel, environments that wear unprotected coils quickly. Always install the cover before hunting, replacing it when you see significant wear helps prevent damage to the coil housing itself. The included mounting hardware lets you swap between the GK19 and your stock coil in the field without carrying extra tools.

While the GK19 will detect relics and coins, it's optimized for gold prospecting in mineralized ground rather than general-purpose detecting. The coil's small size limits depth on larger targets like deep relics or silver coins, and the Gold Kruzer's high operating frequency favors small low-conductors over high-conductors. If your primary interest is relic hunting or coin shooting, a larger coil on a multi-frequency or lower-frequency detector will deliver better results. The GK19's strength is sub-gram gold sensitivity and tight-space access in bedrock country, not depth on larger ferrous or silver targets.

Mounting the GK19 requires removing the stock coil by loosening the cam-lock bolt on the lower shaft, sliding the stock coil's bracket off, and replacing it with the GK19's bracket using the included hardware. Align the coil's connector with the detector's cable plug, ensuring a firm connection, then tighten the cam-lock to secure the coil at your preferred angle. After swapping coils, perform a fresh ground balance in your hunting area, the GK19's smaller size and DD configuration may require slight sensitivity or threshold adjustments compared to your stock coil settings. To understand more about how coil design affects detector performance, visit our page on metal detector technologies.

The GK19 is covered by Nokta's manufacturer warranty when purchased from an authorized dealer like Serious Detecting. Nokta's warranty terms typically cover defects in materials and workmanship for two years from the date of purchase, though coverage specifics can vary by region and product line. Register your coil with Nokta after purchase to activate warranty protection. Damage from misuse, such as operating the coil on an incompatible detector or physical abuse, is not covered. Keep your purchase receipt and contact Serious Detecting if you experience any issues, we'll work with Nokta to resolve warranty claims for products bought through our store.