Fisher Impulse Pulse Induction Waterproof Metal Detector

Deep-Seeking Detector for Saltwater Beaches, Surf Hunting, Diving, and Land Use

The Fisher Impulse is a rugged pulse induction metal detector designed for underwater treasure hunting, saltwater beaches, wet sand, freshwater environments, and land detecting. Its pulse induction technology handles conductive saltwater and mineralized conditions that can cause instability in conventional VLF detectors.

The Impulse uses a no-motion search system, meaning the search coil does not need to remain in motion to detect a target. An audio tone, LCD signal-strength bar graph, and bright red LED provide three ways to recognize buried metal. Its VCO pinpointing response increases in pitch and volume as the center of the coil approaches the target.

Features

• Pulse induction metal-detection technology

• Designed for saltwater, freshwater, beach, surf, and land detecting

• Submersible to depths of up to 250 feet

• No ground balancing required

• No-motion target detection

• VCO audio pinpointing

• Waterproof piezoelectric headphones

• LCD signal-strength bar graph

• Bright red visual target indicator

• Automatic battery check

• Detachable control housing for optional hip mounting

• Electrostatic-insulated search coil helps reduce certain false signals

• Adjustable shaft for land, shallow-water, and diving configurations

• Powered by eight AA batteries

Three Target Responses

The Fisher Impulse provides three simultaneous target indications:

• Audio response: VCO tone rises in pitch and volume as the coil approaches a target

• LCD bar graph: Displays signal strength and battery condition

• Red LED: Provides a bright visual target alert

These multiple responses are especially useful while detecting underwater or in environments where one type of signal may be difficult to recognize.

Recommended Uses

Ideal for:

• Saltwater beach detecting

• Wet-sand hunting

• Surf and shallow-water detecting

• Freshwater lakes and rivers

• Underwater treasure hunting

• Wreck diving

• Deep-seeking land searches

• Locating both ferrous and nonferrous metal objects

Because this is a pulse induction detector, it is highly sensitive to metal but does not provide the conventional target identification or discrimination found on many VLF detectors. Users should expect to recover iron and other unwanted metal along with valuable targets.

Specifications

• Brand: Fisher Research Labs

• Model: Impulse

• Technology: Pulse induction

• Pulse Rate: 5,333 pulses per second, crystal controlled

• Detection Method: No-motion

• Ground Balance Required: No

• Audio Response: VCO

• Visual Responses: Red LED and LCD signal-strength bar graph

• Waterproof Rating: Submersible to 250 feet

• Search-Coil Type: Fixed dual-spider coil

• Search-Coil Options: 8-inch or 10.5-inch, depending on detector configuration

• Interchangeable Coil: No

• Headphones: Fixed waterproof piezoelectric headset

• Power Supply: Eight 1.5V AA batteries

• Estimated Alkaline Battery Life: More than 100 hours

• Extended Length: Approximately 50 inches

• Collapsed Length: Approximately 31 inches

• Operating Temperature: 32°F to 120°F

• Hip-Mountable Control Housing: Yes, for land or shallow-water use

Important Information

The Fisher Impulse uses a permanently connected search coil and waterproof headphones; these components are not interchangeable. Hip mounting is intended for land or shallow-water use and is not recommended while diving.

Always inspect the detector’s seals and battery compartment before submerging it. Rinse the detector thoroughly with fresh water after saltwater use and follow all manufacturer instructions for underwater operation and maintenance.

The Fisher Impulse AQ Metal Detector is a game-changer for serious beach treasure hunters. Designed with cutting-edge pulse induction technology, this detector offers exceptional sensitivity, particularly when detecting gold. It performs brilliantly across a variety of beach environments, including wet sand, dry sand, and surf. Equipped with variable reactivity and advanced target separation, it ensures accurate detection of valuable targets while minimizing false signals from iron objects. Its lightweight and ergonomic design provides comfort during extended detecting sessions, making it the ultimate tool for treasure hunters seeking deep-detection capabilities.

Whether you're searching for the smallest gold nuggets or valuable jewelry, the Impulse AQ excels in sensitivity and depth, giving you the advantage in uncovering treasures. Its adjustable settings, including frequency offset and pulse delay, allow you to customize the detector for optimal performance in any environment.

Purpose: Beach Hunting, Shallow Water Treasure Hunting, Gold Jewelry Detection, Wet Sand Searching