{"product":{"id":8289344717084,"title":"Nokta SP35 13.5\" x 12.5\" DD Searchcoil for Simplex+","body_html":"\u003cp\u003eThe Nokta SP35 is a 13.5\" x 12.5\" elliptical Double D searchcoil built exclusively for the Nokta Makro Simplex+ metal detector, delivering significantly more ground coverage per swing than smaller coils while maintaining tight target separation in iron-contaminated sites. Simplex+ owners hunting large open fields, parks, and beaches reach for the SP35 when speed matters. The elliptical geometry covers more area without the weight penalty of a full round coil, and the DD configuration cuts through mineralized soil that would mask targets with a concentric design. The fully waterproof construction preserves the Simplex+ detector's submersible rating for surf hunting and stream wading.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's Included with the Nokta SP35 Coil\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNokta SP35 13.5\" x 12.5\" DD searchcoil with integrated cable\u003c\/li\u003e\n\u003cli\u003eCoil mounting hardware for Simplex+ lower shaft attachment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Simplex+ Owners Reach for the SP35\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIncreased ground coverage over smaller coils, reducing sweep count in open areas and letting you cover large sites more efficiently\u003c\/li\u003e\n\u003cli\u003eTarget separation holds in trashy parks because the DD field pattern rejects adjacent iron while locking onto coin-sized targets\u003c\/li\u003e\n\u003cli\u003eWaterproof rating matches the Simplex+ detector's submersible spec, so you can hunt knee-deep surf and shallow creeks without worrying about seal failure\u003c\/li\u003e\n\u003cli\u003eWeight stays manageable at under 1 pound, preventing the arm fatigue that plagues detectorists swinging oversized round coils for three-hour sessions\u003c\/li\u003e\n\u003cli\u003eThe elliptical shape fits between playground equipment, park benches, and fencelines where a larger round coil would snag or force awkward angles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWider Sweep Efficiency in Open Fields and Beaches\u003c\/h2\u003e\n\n\u003cp\u003eThe SP35's 13.5\" x 12.5\" footprint shines in environments where target density is low and you need to cover ground fast. We've run this coil on dry sand beaches where coins and rings are scattered across wide beach faces. The larger coil width means each pass overlaps less, and you can walk a straight grid pattern without worrying about gaps. The DD transmit-receive geometry provides enhanced depth on larger targets like silver dollars and jewelry in dry sand.\u003c\/p\u003e\n\n\u003cp\u003eIn open fields and pastures, the SP35 lets you walk wider transect lines, reducing total detecting time in open areas. The coil's elliptical shape also maneuvers around fence posts and through tall grass more easily than a round coil of equivalent area.\u003c\/p\u003e\n\n\u003cfigure\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/files\/17000258_Inline.jpg?v=1779383666\" alt=\"Black DD searchcoil with cross-brace design and attached connector cable, overhead view\"\u003e\u003c\/figure\u003e\n\n\u003ch2\u003eDD Configuration Performance in Mineralized Ground\u003c\/h2\u003e\n\n\u003cp\u003eThe SP35's Double D coil design transmits a blade-shaped electromagnetic field instead of the cone pattern a concentric coil produces. This blade pattern penetrates mineralized soil with less ground noise, which matters on Midwest red clay sites and volcanic black sand beaches where iron mineralization would cause a concentric coil to chatter. We've used the SP35 on iron-rich Civil War camp sites where smaller coils required constant ground balance adjustments. The DD field stayed stable, and target separation held even with rusty nails near valuable targets.\u003c\/p\u003e\n\n\u003cp\u003eThe SP35 pairs well with the Simplex+ detector's automatic ground tracking, and you can run higher sensitivity settings without false signals. Understanding \u003ca href=\"https:\/\/seriousdetecting.com\/pages\/metal-detector-technologies\"\u003emetal detector technologies\u003c\/a\u003e like DD versus concentric field patterns helps you pick the right coil for your soil type.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Nokta Simplex+ only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Size:\u003c\/strong\u003e 13.5in x 12.5in (34cm x 32cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Type:\u003c\/strong\u003e Double D (DD)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Elliptical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof Rating:\u003c\/strong\u003e Fully submersible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable:\u003c\/strong\u003e Integrated, coiled design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Under 1 lb (454g)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn the Box:\u003c\/strong\u003e Coil, mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Buy from Serious Detecting\u003c\/h2\u003e\n\u003cp\u003eSerious Detecting is an \u003ca href=\"https:\/\/seriousdetecting.com\/pages\/customer-care__about-us\"\u003eauthorized Nokta dealer\u003c\/a\u003e, which means every SP35 coil ships with the full manufacturer warranty and our team has field-tested this coil on Simplex+ detectors in beach, park, and relic hunting scenarios. We offer free shipping on all orders, a 30-day return window if the coil doesn't fit your hunting style, and price-match guarantee if you find a lower advertised price. Our team runs \u003ca href=\"https:\/\/seriousdetecting.com\/collections\/nokta\"\u003eNokta metal detectors\u003c\/a\u003e in the field and can answer setup questions about coil swaps, ground balance adjustments, and sensitivity tuning for the SP35 on mineralized ground.\u003c\/p\u003e","vendor":"Nokta Detection Technologies","product_type":"Coils","created_at":"2023-05-18T21:40:37-04:00","handle":"nokta-sp35-13-5-x-12-5-searchcoil-black","updated_at":"2026-06-04T11:47:01-04:00","published_at":"2023-05-18T21:40:37-04:00","template_suffix":null,"published_scope":"web","tags":"beach-hunting, coil-upgrade, dd-coil, elliptical-coil, field-hunting, large-coil, nokta, nokta-accessories, park-hunting, search-coil, simplex-coil, simplex-plus, treasure-hunting, waterproof-coil","variants":[{"id":45211283915036,"product_id":8289344717084,"title":"Default Title","price":"169.15","sku":"17000258","position":1,"compare_at_price":"199.00","fulfillment_service":"manual","inventory_management":"shopify","option1":"Default Title","option2":null,"option3":null,"created_at":"2023-05-18T21:40:37-04:00","updated_at":"2026-06-04T11:47:01-04:00","taxable":true,"barcode":"8699394002589","grams":794,"image_id":null,"weight":1.75,"weight_unit":"lb","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"USD","compare_at_price_currency":"USD","quantity_price_breaks":[]}],"options":[{"id":10507418730780,"product_id":8289344717084,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":41206744187164,"product_id":8289344717084,"position":1,"created_at":"2023-05-18T21:40:37-04:00","updated_at":"2023-05-18T21:40:37-04:00","alt":"Nokta SP35 13.5 by 12.5 inch elliptical DD searchcoil with integrated cable and mounting bracket for Simplex+ detector","width":1000,"height":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/products\/17000258_01.jpg?v=1684460437","variant_ids":[]},{"id":41206744219932,"product_id":8289344717084,"position":2,"created_at":"2023-05-18T21:40:37-04:00","updated_at":"2023-05-18T21:40:37-04:00","alt":"Close-up view of Nokta SP35 coil showing DD configuration and connector cable","width":1000,"height":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/products\/17000258_02.jpg?v=1684460437","variant_ids":[]},{"id":41206744252700,"product_id":8289344717084,"position":3,"created_at":"2023-05-18T21:40:37-04:00","updated_at":"2023-05-18T21:40:37-04:00","alt":"Nokta SP35 search coil with included mounting hardware and installation components","width":1000,"height":714,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/products\/17000258_STOCK.jpg?v=1684460437","variant_ids":[]}],"image":{"id":41206744187164,"product_id":8289344717084,"position":1,"created_at":"2023-05-18T21:40:37-04:00","updated_at":"2023-05-18T21:40:37-04:00","alt":"Nokta SP35 13.5 by 12.5 inch elliptical DD searchcoil with integrated cable and mounting bracket for Simplex+ detector","width":1000,"height":1000,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0760\/1464\/9628\/products\/17000258_01.jpg?v=1684460437","variant_ids":[]}}}