Nokta IM24 9.5 x 5 inch Waterproof DD Search Coil for Impact

The Nokta IM24 coil is engineered exclusively for use with the Nokta Impact metal detector. Because different detector models operate on unique frequencies and internal circuitry architecture, search coils are rarely cross-compatible across different families. Attempting to connect the IM24 to a Simplex or Legend will result in error codes or lack of performance. If you run a different detector brand or model, explore Nokta coils to see coil options for your specific machine and hunting style.

The elliptical shape of the Nokta IM24 gives you a distinct advantage in tight spaces and highly trashy environments. Because the search footprint is narrower (5 inches wide), it allows you to sneak between closely spaced iron targets or navigate around physical obstructions like rocks and playground equipment. Additionally, the Double-D (DD) configuration provides excellent ground mineralization rejection, meaning you'll experience fewer false signals when hunting over wet beach sand or highly mineralized soil conditions while maintaining superb depth tracking for older coins and relics.

Yes, the Nokta IM24 DD search coil comes complete with a high-impact protective coil cover already installed, alongside the necessary mounting nut and bolt hardware. We highly recommend keeping the coil cover attached at all times during your hunts. The cover acts as a sacrificial shield, absorbing the scuffs, scrapes, and impacts from sharp rocks and rough ground terrain. This prevents structural damage to the waterproof epoxy bottom of the actual coil, ensuring your gear stays fully sealed and functional for years to come.

The IM24's 9.5x5 elliptical footprint isolates individual targets in trash-dense environments where the standard 11-inch round coil reports merged signals. The narrow 5-inch width slips between bottle caps and iron fragments, letting the Impact report depth and target ID on a single coin two inches from a nail. DD coil geometry concentrates the detection field along the centerline, reducing side sensitivity to adjacent trash. Detectorists working urban parks and heavily hunted school yards gain the ability to cherry-pick high conductors from nail beds and pull-tab clusters. Understanding metal detector technologies helps explain why elliptical DD coils excel in confined spaces.

The IM24 coil trades some maximum depth for improved target separation and maneuverability in trashy sites. The LIVE BODY confirms the coil maintains excellent depth detection while delivering superior target separation in trashy areas. Small targets like earring backs and thin chains often register more clearly with the IM24 because the smaller detection field reduces ground noise and adjacent trash interference. The enhanced sensitivity to small targets combines with reduced ground mineralization effects to improve overall performance in challenging environments. Detectorists hunting iron-infested parks typically accept any depth tradeoff for the ability to isolate individual coins from trash clusters and work tight spaces effectively.

The IM24 coil package includes the 9.5x5 DD search coil with attached cable, a protective coil cover to shield the housing from rocks and abrasion, and complete mounting hardware to attach the coil to the Impact lower shaft. The coil cover is a tight-fit design that stays in place during detecting and extends coil life on gravel beaches and rocky sites. The mounting hardware matches the Impact's attachment system, allowing you to install the coil securely to the lower shaft. The protective cover guards against scratches and impacts when hunting in rocky terrain or around concrete structures.

The DD (Double-D) coil design virtually eliminates the need for ground balancing adjustments when transitioning between mineralized soil and neutral ground. The DD configuration creates a detection field that reduces sensitivity to ground minerals, providing more stable operation in challenging soil conditions. Impact operators working relic sites with red clay and iron-rich soil report fewer false signals and more stable target ID compared to concentric coils. The IM24 maintains ground balance automatically across soil transitions, a practical advantage when hunting along creek banks and field edges where mineralization varies. This enhanced performance in mineralized ground makes the coil ideal for relic hunting and coin shooting in difficult soil conditions.

The IM24 coil works with the Impact's search modes including discrimination modes for selective target recovery. Discrimination mode with the IM24 excels at cherry-picking high conductors from iron beds, as the narrow 5-inch width isolates individual targets that larger coils report as merged signals. The coil's DD geometry supports the Impact's ground tracking and threshold adjustments across different operating modes. The elliptical design and DD configuration work together to deliver superior target separation in trashy areas while maintaining the detector's ability to distinguish between target types. This versatility makes the IM24 effective for coin shooting, jewelry recovery, and relic hunting in varied conditions.

The IM24 coil uses a lightweight construction that reduces swing weight compared to the standard 11-inch Impact coil, though Nokta does not publish exact weights for either coil. Detectorists report less arm fatigue during extended grid searches with the IM24, particularly when working tight spaces around playground equipment and foundation corners where frequent direction changes are required. The lighter swing weight combines with the elliptical shape to improve maneuverability in confined areas. The reduced mass also makes the IM24 a practical choice for younger detectorists and operators with shoulder or elbow strain.

Mount the IM24 coil by aligning the coil ears with the lower shaft bracket on the Impact, inserting the bolt through both ears and the bracket, and tightening the included hardware until the coil sits firmly without play. The package includes all mounting hardware needed to attach the coil securely to the Impact lower shaft. Route the coil cable along the shaft and secure it with cable ties or Velcro straps to prevent snagging on brush. Connect the coil cable to the control box following the detector's standard connection procedure. Verify the coil sits parallel to the ground when the shaft is adjusted to your height for optimal detection performance.

The IM24 coil performs best in moderately trashy sites where you need balanced ground coverage and target separation without the extreme compactness of the 5-inch IM13. Urban parks with scattered bottle caps and foil, beach zones with moderate iron and aluminum debris, and relic sites with mixed trash densities are ideal environments for the IM24. The 9.5-inch length provides wider sweep coverage than the 7.5x4 IM19 while maintaining better target isolation than the standard 11-inch round coil. Detectorists working open fields or deep relic sites typically prefer the standard coil for maximum depth, while those hunting extreme trash environments often choose the smaller IM13 or IM19.