Fisher Research Labs Gemini-3 2-Box Metal and Mineral Detector for Deep Search and Cache Locating, Operating Frequency: 82 kHz

SKU: FHGEMINI3 MFR: GEMINI3
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Key Features

  • Unearth hidden treasures with the Fisher Gemini-3 metal detector, ideal for deep search!
  • Achieve pinpoint accuracy with 82 kHz frequency, designed for serious relic hunting.
  • Maximize detection depth for cache hunting; find deeply buried metals and minerals.
  • Enjoy durable construction & water resistance, ensuring reliable performance in any terrain.
  • Utilize discrimination control to filter unwanted metals, focusing on valuable finds.
  • Long-lasting battery life (50 hrs alkaline) means more time searching with your metal detector.
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Special Order?Estimated to Ship: 08/08/2025
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Fisher Research Labs Gemini-3 Specifications

Recommended for

Operating Modes

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  • Operating Modes

    Search:
    Narrow Scan, Inductive
    Wide Scan, Inductive Trace

    Trace:
    Inductive
    Conductive

Frequency

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  • RF Search and Trace

    81.92 KHz Crystal Controlled

Audio Functions

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  • Target Response Meter

    2-1/4" x 1-3/4", Analog

  • Speaker

    2-1/4" 100Ohms, Moisture-Proof Cone

  • Headphones

    1/4" Jack, 8-16Ohms, Stereo/Mono

Batteries

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  • Receiver

    8x AA 1.5V

  • Transmitter

    8x AA 1.5V

Battery Life

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  • Carbon Zinc

    30 hours

  • Alkaline

    50 hours

General

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  • Dimensions

    Length on handle: 49.25" (125.10cm)
    Transmitter-Receiver Box Assembly: 9.25 x 12 x 6" (23.50 x 30.48 x 15.24cm)

  • Weight

    Complete: 7 lbs (3.18kg)
    Transmitter: 2.4 lbs (1.09kg)
    Receiver: 2.9 lbs (1.32kg)
    Handle: 1.7 lbs (0.77kg)

About Fisher Research Labs Gemini-3

Experience the unparalleled power and precision of the Fisher Gemini-3 2-Box Metal and Mineral Detector. Renowned among treasure hunters for its ability to locate deep-set objects, this detector can uncover treasures buried 10 to 15 feet deep, depending on ground mineralization and target size. The Gemini-3 surpasses other cache finders in its class, offering deeper tracing and a more user-friendly interface.

Historically, two-box metal detectors have been the tool of choice for prospectors, geologists, and utility companies seeking to locate large, deep objects, ore veins, pipes, and cables. Fisher Research Laboratory, the pioneer in this field, holds the first patent for a two-box metal detector, granted over 60 years ago.

The Gemini-3 represents a significant advancement in two-box design, offering 10 to 20 percent deeper detection than its predecessor. It can trace most pipes and ore veins at least 50 percent farther, thanks to its new crystal-controlled circuitry.

Gone are the days of the old metal-rim antenna and hard-to-find batteries. The Gemini-3 is not only easier to use but also two pounds lighter. It features a Voltage Controlled Oscillator (V.C.O.) and an audio target response for precision pinpointing.

The Gemini-3 is a high-quality, precision instrument from Fisher, the oldest and proudest name in metal detectors. It offers a range of controls including Receiver Power Off-on, Sensitivity Potentiometer, Battery Test, Transmitter Power Off-on, and Null Adjustment Knob. It is sensitive to large, deep objects or ore veins and operates at a crystal-controlled 82 kHz frequency.

With four modes of operation - Inductive Trace, Conductive Trace, Wide Scan Inductive Trace, and Narrow Scan Inductive Trace - the Gemini-3 2-Box Metal and Mineral Detector offers unparalleled performance in the field of deep search and cache locating.

Fisher Research Labs Gemini-3 Features

  • Sensitive to Large, Deep Targets & Ore Veins
  • VCO Audio Response for Target Pinpointing
  • Inductive Search Mode or Optional Conductive Trace Capabilities
  • Operating Frequency 82 kHz
  • 60-cycle noise reduction circuitry

Key Features

  • Unearth hidden treasures with the Fisher Gemini-3 metal detector, ideal for deep search!
  • Achieve pinpoint accuracy with 82 kHz frequency, designed for serious relic hunting.
  • Maximize detection depth for cache hunting; find deeply buried metals and minerals.
  • Enjoy durable construction & water resistance, ensuring reliable performance in any terrain.
  • Utilize discrimination control to filter unwanted metals, focusing on valuable finds.
  • Long-lasting battery life (50 hrs alkaline) means more time searching with your metal detector.

What's in the box:

  • Fisher Gemini-3 2-Box Metal and Mineral Detector
  • Carrying Strap
  • 3 Piece Handle
  • Fisher 5 Year Limited Warranty