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The Fisher 10COILDD-F75 is a 10 x 5 inch (25 x 13 cm) closed Double-D (DD) search coil for the Fisher F75, F75+, F75 LTD, F70 and Teknetics Patriot, Fisher part 10COILDD-F75. It is the smaller, easier to steer alternative to the F75's standard 11 inch coil.
| Configuration | |
|---|---|
| Coil | Fisher 10COILDD-F75, 10 x 5 in (25 x 13 cm), closed |
| Type | Double-D (DD) |
| Fits | Fisher F75, F75+, F75 LTD, F70; Teknetics Patriot |
| Waterproof | Yes (coil) |
What is in the box with the Fisher 10COILDD-F75 DD coil
Fisher's standard contents for the 10 x 5 inch DD coil (Fisher part 10COILDD-F75)
- Fisher 10 x 5 inch white DD search coil
- Coiled cable with screw-in connector and attachment hardware
Which detectors the 10COILDD-F75 fits
- Fisher F75, F75+ and F75 LTD
- Fisher F70
- Teknetics Patriot
Teknetics lists the 10COILDD-F75 as an accessory coil in its Patriot manual, and the coil fits the Fisher F75, F75+, F75 LTD and F70. Every Fisher part sorted by detector is on our Fisher parts and accessories by detector model page.
When to use the 10COILDD-F75
Fisher's F75 manual says all Fisher searchcoils are waterproof for shallow water about 2 ft (0.6 m) deep. The 10 x 5 inch footprint is easier to work between rocks and through grass than the stock 11 inch coil, and the smaller footprint helps pick single coins and relics out of iron and trash. A DD coil keeps a steadier threshold over mineralized ground than a concentric coil.
For an F75 or F70 owner the 10COILDD-F75 is the coil to reach for in littered or overgrown ground, where the stock 11 inch coil feels too wide. Hold the coil low over the ground and overlap each sweep, and ground balance the detector again after the swap. Our metal detector coil guide explains how coil size and type trade coverage for separation.

Fisher 10COILDD-F75 DD coil specifications
| Specification | Fisher 10COILDD-F75 DD coil |
|---|---|
| Size | 10 x 5 in (25 x 13 cm) |
| Type | Double-D (DD) |
| Housing | Closed |
| Color | White |
| Waterproof | Shallow water, about 2 ft (0.6 m) |
| Connector | Screw-in, coiled cable |
| Fits | Fisher F75, F75+, F75 LTD, F70; Teknetics Patriot |
| Part number | Fisher 10COILDD-F75 |
| Warranty | 1 year (First Texas) |
First Texas, the maker of Fisher, lists a 1 year warranty for the 10COILDD-F75. Every coil and accessory we carry for the F75 is in our Fisher F75 collection.
Serious Detecting is a family-owned, authorized Fisher dealer with a showroom in Ypsilanti, Michigan, and our staff help by phone or email.
Customer Questions & Expert Answers
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