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    • Nokta Makro C23 9-inch waterproof search coil with open-frame design and cable connector for CF77 Coin Finder metal detector
    • Close-up view of Nokta C23 coil connector and wiring for CF77 Coin Finder

    Nokta Makro C23 9" Search Coil for CF77 Coin Finder Metal Detector

    SKU: SCC23
    Regular Price $132.00
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    The Nokta C23 delivers pinpoint accuracy for coin hunters who need maximum sensitivity in tight spaces. This 9-inch coil transforms your CF77 into a precision instrument for finding small targets other detectors miss. CF77 owners hunting old homesteads, park benches, and dense urban sites reach for the C23 when their standard coil can't separate good finds from trash. At 9 inches, it's the smallest coil available for the CF77, making it ideal for any location with concentrated metal debris.

    Why CF77 Coin Finder Owners Reach for the C23

    • Ultra-high sensitivity detects the smallest coins and gold nuggets in mineralized ground where larger coils lose resolution
    • Compact 9-inch diameter threads between bottle caps, pull tabs, and nails to isolate individual targets in crowded locations
    • Waterproof construction lets you hunt creek beds, wet sand, and shorelines without worrying about coil damage
    • Lightweight open-frame design reduces arm fatigue during long hunts while maintaining excellent depth on coin-sized targets
    • Plug-and-hunt compatibility with all CF77 detection modes means no calibration needed when you swap coils

    Tighter Target Separation in Trashy Urban Sites

    Most coin hunters eventually hit sites where their standard coil just can't squeeze between targets. That's where the C23 shines. The compact footprint excels in three core scenarios where larger coils struggle.

    Schoolyards and Park Benches

    Playgrounds and picnic areas concentrate decades of dropped coins alongside modern trash. The C23's 9-inch diameter lets you thread between bottle caps and foil wrappers to pinpoint individual coins. We've used this coil to pull silver dimes from schoolyard sites other detectorists had already worked over with larger coils. The open-frame design sheds dirt quickly, keeping your sweep speed consistent across wood chips and mulch.

    Old House Foundations with Scattered Nails

    Homestead sites and tear-downs bury good targets among construction debris. The C23 isolates individual items in areas where a 10-inch or 12-inch coil would mask coins under the combined signal of nearby nails and wire. Many CF77 owners keep this as their go-to coil for relic recovery in these high-trash environments. The waterproof construction also means you can hunt foundation holes that collect rainwater without risking coil failure.

    Creek Beds and Narrow Shorelines

    Space-limited hunting environments favor smaller coils. The C23 maneuvers around rocks and roots where larger coils can't reach. Gold prospectors appreciate how it isolates small nuggets from hot rocks in mineralized stream gravel. The coil works seamlessly with the CF77's discrimination patterns to reject iron while still flagging gold and silver targets in wet sand.

    Black circular metal detector search coil with handle and attached cable connector

    How the C23 Fits the CF77 Platform

    The C23 is purpose-built for the Nokta CF77 Coin Finder. The coil connects directly to the CF77 with no adapters required. Simply swap coils and you're ready to hunt. The open-frame design reduces weight for less arm fatigue.

    Detectorists who want to understand how different coil sizes affect detection depth and target separation can explore the technologies behind modern detectors at metal detector technologies. The C23's 9-inch diameter represents the sweet spot for coin hunting in trashy sites: small enough to separate adjacent targets, large enough to maintain depth on dime-sized objects.

    Coil Selection Strategy for CF77 Owners

    The C23 complements your CF77's standard coil for specialized hunting scenarios. The C23 becomes essential when you encounter concentrated metal debris or need to work narrow spaces. Our team runs the C23 as a primary coil for urban hunting and switches back to the larger coil for open-field relic sites.

    If you're building a multi-coil setup for different terrains, browse our complete selection of metal detector search coils: dd, concentric, monoloop & sef upgrades to compare coil technologies across brands. The C23's open-frame design offers advantages in trashy ground that closed-shell coils can't match. For detectorists who also run other Nokta metal detectors, understanding coil compatibility across the Nokta lineup helps you maximize your investment in accessories.

    Specifications

    • Diameter: 9 inches
    • Compatibility: Nokta CF77 Coin Finder only
    • Construction: Waterproof wired coil
    • Configuration: Open frame design

    Why Buy from Serious Detecting

    Serious Detecting is an authorized Nokta dealer, which means every C23 coil ships with the full manufacturer warranty and our team's support. We've field-tested Nokta coils across mineralized ground, saltwater beaches, and high-trash urban sites, so we can answer compatibility and performance questions based on real hunts. Every order includes free shipping, a 30-day return window, and our price-match guarantee. If you find a lower advertised price on an identical in-stock item, we'll match it.

    Product Specifications
    Specification Name Specification Value
    Color Black
    Compatible nokta Nokta CF77 Coin Finder
    Search coil build Open
    Search coil shape Round
    Search coil size 9"
    Search coil type Double-D (DD)
    Water resistance Waterproof
    Wireless Wired
    Service & Support

    Warranty & Product Assurance

    At Serious Detecting, we stand behind the quality of every product we offer. Warranty coverage is provided directly by the manufacturer and may vary depending on the item. We’re here to help you understand your coverage and assist with the warranty process when needed. If you ever have questions or need support navigating a warranty claim, our team is happy to guide you.

    Technical Support & Expert Guidance

    Whether you’re setting up new gear, optimizing performance, or troubleshooting an issue in the field, our knowledgeable support team is here to help. We use this equipment ourselves, so we can offer real-world tips and step-by-step assistance to get you detecting with confidence. Message us anytime and we’ll do our best to get you pointed in the right direction fast.

    Manuals, Resources & Downloads

    Access user manuals, setup guides, safety tips, and technical documentation in our online support center. These resources help you understand your equipment, learn recommended settings, and get the most out of every hunt.

    Replacement Parts & Accessories

    Keep your equipment running strong with genuine parts and accessories. We carry coils, batteries, chargers, protective gear, digging tools, and more — fully compatible with your detector and backed by manufacturer standards. Not sure what fits your model? Just ask — we’re here to help.

    Training & Tutorials

    New to detecting or upgrading to advanced equipment? Our resource library includes helpful guides, maintenance tips, how-to videos, and expert advice from experienced detectorists. From ground balancing and coil choices to target ID basics and field technique, you’ll find the knowledge you need to level up your success.

    Customer Questions & Expert Answers

    Get real answers from outdoor explorers and our product experts. Browse questions about performance, features, and setup — or ask your own to make sure this gear fits your next adventure.

    Is the Nokta C23 coil compatible with detectors other than the CF77?

    The Nokta C23 coil is compatible exclusively with the Nokta CF77 Coin Finder metal detector. The C23 is designed specifically for the CF77 and will not connect to other detectors. It will not work with other Nokta detectors or other manufacturers. If you're looking for coil options for a different Nokta detector, browse our selection of metal detector search coils to find compatible accessories for your specific model.

    Answered by Dan P. · May 2026

    What depth can I expect on coin-sized targets with the C23?

    The C23 9-inch coil provides good depth on coin-sized targets, with actual performance varying by soil conditions. The C23 delivers reliable detection on dime and quarter-sized targets while prioritizing target separation in trashy ground. Actual depth varies with ground mineralization, target orientation, and discrimination settings. While larger coils push deeper in clean, open fields, the C23 is built for trash-heavy sites. It trades a fraction of maximum depth for superior target separation, allowing you to pick out individual coins hiding among dense metal debris at urban sites and old homesteads.

    Answered by Dan P. · May 2026

    Can I use the C23 coil in saltwater or freshwater environments?

    The waterproof construction allows hunting in wet conditions including creek beds and beaches. CF77 owners hunt creek beds, riverbanks, wet sand beaches, and shallow surf zones with the C23 without risking coil damage. The open-frame design works well in wet conditions and helps maintain consistent performance. Keep in mind that the CF77 control box itself has specific waterproof ratings, so verify your detector's housing limits before submerging the entire unit. The coil's waterproof construction also protects against rain and damp ground during land hunts.

    Answered by John W. · May 2026

    How does the C23's open-frame design affect performance?

    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.

    Answered by Richard T. · May 2026

    Do I need to recalibrate my CF77 when I switch to the C23 coil?

    You do not need to recalibrate or update firmware when switching to the C23 coil. Simply swap coils and begin hunting, no calibration required. Detach your existing coil, snap the C23 into the lower rod connector, and power on your detector. The CF77's discrimination patterns, sensitivity settings, and audio profiles work identically with the C23 as they do with the factory coil. This plug-and-hunt compatibility makes coil swapping quick and straightforward in the field.

    Answered by Richard T. · May 2026

    What hunting scenarios favor the C23 over a larger coil?

    The C23 excels anywhere target density is high and space is limited. If you are hunting in high-trash urban environments, dense brush, or narrow creek beds, the C23's compact size allows you to isolate individual targets—like a silver dime sitting next to an iron nail—much better than the standard factory coil.

    Answered by Dan P. · May 2026

    Does the C23 coil come with a warranty?

    Yes, the Nokta C23 search coil ships with a full manufacturer warranty. As an authorized Nokta dealer, Serious Detecting supports your purchase. Please refer to our returns and warranty page for specific duration details and claim information.

    Answered by John W. · May 2026

    Customer Reviews & Field Feedback

    See what real detectorists and prospectors are saying. Read authentic experiences from the field, discover what users love most, and learn how this product performs in real-world conditions. Share your own review to help fellow explorers choose with confidence.

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