Fisher Gold Bug Series 10-inch Solid Biaxial DD White Elliptical Coil

The Fisher 10-inch solid biaxial DD elliptical coil is a genuine waterproof search coil for the Fisher F5, Gold Bug, and Gold Bug Pro. Its double-D winding cancels ground mineralization more effectively than the stock concentric coils, so gold prospectors can run higher sensitivity in hot soil without constant ground chatter, and relic hunters get tighter target separation in iron-choked sites. The larger 10-inch elliptical footprint also reaches deeper and covers more ground per swing than the small stock coils. It is a straightforward depth-and-coverage upgrade for anyone running a Fisher Gold Bug series detector.

What's included

• Fisher 10-inch solid biaxial DD white elliptical coil
• 6.6-foot cable with screw-on connector

Why Gold Bug and F5 owners upgrade to the 10-inch DD coil

• Deeper in mineralized soil. The DD geometry nulls ground minerals better than concentric coils, so you reach older coins and deeper relics the stock coil masks under ground noise.
• Tighter target separation. The elliptical footprint isolates good targets next to iron, which matters at relic sites where square nails cluster around buttons and coins.
• More coverage. The 10-inch elliptical clears more ground per swing than a small round coil, so you search open gold country and large relic sites faster.
• Waterproof. Hunt shallow water, wet sand, and creek edges without worrying about the coil.
• Light at 14 oz. Swing all day without wrist fatigue.

Where the 10-inch DD coil performs best

Gold prospecting in hot soil

The biaxial DD winding cancels the mineralization that makes the stock concentric coil chatter in Arizona caliche and Nevada desert washes. Run higher gain, hold a stable threshold, and detect deeper targets. The elliptical shape covers more ground than a round 8-inch coil, so you clear open terrain faster.

Colonial relic sites with dense iron

Where iron nails cluster around buttons, buckles, and coins, the DD footprint separates the good targets that a concentric coil masks. Our team has run this coil at Revolutionary War campsites in Virginia and pulled keepers the stock coil walked past.

Which Gold Bug coil should you choose?

Specifications

• Compatibility: Fisher F5, Gold Bug, Gold Bug Pro
• Coil size: 10-inch elliptical (25 cm)
• Coil type: DD (biaxial)
• Construction: Solid
• Color: White
• Weight: 14 oz (397 g)
• Cable length: 6.6 ft (2 m)
• Connector: Screw-on
• Waterproof: Yes
• Country of manufacture: USA

Frequently asked questions

What detectors does this 10-inch DD coil fit?
It fits the Fisher F5, Fisher Gold Bug, and Fisher Gold Bug Pro, using the standard screw-on connector for those detectors. It is not for the Gold Bug II, which uses a different coil.

What is the advantage of a DD coil over the stock concentric coil?
A double-D coil cancels ground mineralization more effectively, so you can run higher sensitivity in hot soil without chatter, reach deeper targets, and get better separation in iron trash. The larger 10-inch size also covers more ground per swing.

Is the coil waterproof?
Yes, the coil is waterproof, so you can hunt wet sand, shallow water, and creek edges. Keep your detector's control box out of the water.

How heavy is it?
The coil weighs 14 oz (397 g) and comes with a 6.6-foot cable and screw-on connector.

Is this a genuine Fisher coil?
Yes. Serious Detecting is an authorized Fisher dealer, so this is a genuine Fisher coil backed by the manufacturer warranty.

Why buy from Serious Detecting

As an authorized Fisher dealer, this coil ships genuine with Fisher's manufacturer warranty and US technical support. Our detectorists run Fisher Gold Bug series detectors in mineralized ground from Nevada to the Carolinas, and we stock the solid-construction coils prospectors actually use. Free shipping, 30-day returns, and a price-match guarantee.