Gemini 3
Gemini 3
Gemini 3
Gemini 3
Gemini 3
Gemini 3
Gemini 3
Gemini 3

Gemini 3

Fisher: Since 1931
$959.00 USD
{price}% OFF
Order in the next [hour] to get it by [date_start]
Find a Dealer
ecom-edit-image-yhvL0ppzhbUntitled_design_3_7af8c1c5-e612-43a9-9d74-845ed6bbc60f.png

Description

Specifications

Shipping & Returns

Documentation
Support
Reviews

Product Description

The Fisher Gemini-3 is an advanced two-box metal detector designed for detecting large, deep objects such as ore veins, pipes, and cables, making it ideal for prospectors, geologists, treasure hunters, and public utility companies. Operating at an 82 kHz frequency, the Gemini-3 excels in identifying deep, buried targets. Its Voltage Controlled Oscillator (VCO) provides variable audio pitch, allowing for precise pinpointing of objects. Equipped with both inductive and conductive trace modes, it offers flexibility in different search conditions, ensuring reliable performance across various terrains. The Gemini-3’s 60-cycle noise reduction circuitry minimizes interference from electrical sources, making it a dependable tool even in challenging environments.


Crafted with durability and ease of use in mind, the Gemini-3 boasts a lightweight design, weighing only 7.5 lbs, and features user-friendly controls, including a battery test meter and power on/off push-pull switches for straightforward operation. This detector is powered by 16 AA batteries, offering up to 30 hours of use on alkaline cells. Proudly made in the USA and backed by a 5-year warranty, the Fisher Gemini-3 provides professionals and hobbyists alike with a high-quality, dependable solution for deep-seeking detection tasks.


Purpose: Deep-seeking and cache locating for large buried objects, ore veins, pipes, and utilities. Ideal for prospectors, geologists, treasure hunters, and utility companies.

Specifications

HEADING 1HEADING 2
Operating Frequency:81.92 kHz
Detection Capability: Sensitive to large, deep objects and ore veins
Operating Modes:Inductive Trace, Conductive Trace, Wide Scan Inductive Trace
V.C.O. Audio Response:Precision pinpointing with variable volume and pitch
Target Depth:Capable of detecting objects up to 10-15 feet deep, depending on ground conditions
Noise Reduction:60-cycle noise reduction circuitry minimizes electrical interference
Battery Life: 25 hours for the transmitter, 30 hours for the receiver (using alkaline batteries)
Battery Type:Requires 16 AA batteries (8 for the transmitter, 8 for the receiver)
Signal Strength Indicator:Numerical and bar-graph display for clear signal reading
Battery Status Indicator: 3-color battery status indicator (green, red, amber) on the transmitter
Dimensions: Transmitter-Receiver Box Assembly: 9-¼" x 12" x 6"
Weight: Complete system weighs 7.5 lbs (Transmitter: 2.5 lbs, Receiver: 3.0 lbs, Handle: 2.0 lbs)
Audio Output:2-¼" speaker with 100 ohm moisture-proof cone
Headphone Compatibility:¼" jack for 8-16 ohms stereo or mono headphones
Warranty: 2-Year Limited

Shipping 

Domestic Shipping: 
We are pleased to offer free FedEx 2nd Day delivery to all 50 U.S. states on most items. This means your order will arrive quickly and efficiently, no matter where you are located within the United States. Our commitment to fast and reliable shipping ensures that you receive your products within two business days, so you can start enjoying your purchase without delay. All orders are carefully packaged and shipped with FedEx's trusted service, providing you with peace of mind knowing that your items will arrive safely and on time. 

International Shipping: 

For our international customers, we offer shipping to various locations around the world. To provide you with the best possible service and rates, please contact us directly for a customized shipping quote. Our team will work with you to find the most cost-effective and reliable shipping options, ensuring that your order reaches you in a timely and secure manner. We strive to offer competitive rates on all international shipments, so you can enjoy our products no matter where you are. Whether you are looking for standard or expedited shipping options, we are here to accommodate your needs and provide the best possible shipping experience.

Return Policies

Your satisfaction is our priority. If you're not 100% happy with your purchase when buying directly from us, you can return or exchange any item(s) within 30 days of purchase. Simply follow these steps to ensure a quick and easy return process: 

Step 1: Fill out the RMA form and wait for an RA number to be assigned. Make sure to notify us within 30 days of your purchase. 

Step 2: Return the item(s) using USPS, FedEx, or any other traceable shipping method. We recommend insuring your package. Send your returns to: 

First Texas Products 
Attn: Repair Deparment
RMA# 
1120 Alza Drive 
El Paso, TX 79907 

Please allow up to 14 days for us to receive and process your return. We will credit or refund the value of the returned items and any applicable taxes, minus the original shipping charges. Original shipping and handling fees are non-refundable. 

For more details or assistance with your return, contact our Customer Relations team: Email: info@frsttx.com Phone: 1-800-850-5050 

Return Policy Overview 

We offer a 30-day money-back guarantee for items returned in their original, undamaged condition. If you're not completely satisfied with your purchase, return it within 30 days of delivery for a full refund. Please ensure that the product is not damaged, altered, or shows signs of wear. Credit card refunds may take up to two billing cycles to appear.

Manual

GEMINI3 (English)

Support

While we list our products at MSRP on our website, our authorized dealers often offer competitive pricing. Visit our dealers to find the best deals and take advantage of their expert service.

For more information and to purchase, visit where to buy, email us, chat with us, or call us at 1-800-685-5050 for any questions. 


Perfect Add-Ons

Rechargeable Nimh AA Battery Kit
Save $5.00

Rechargeable Nimh AA Battery Kit

$29.99 USD $34.99 USD
Stereo Headphones
Save $8.00

Stereo Headphones

$31.99 USD $39.99 USD

Frequently Asked Questions

Can the Gemini-3 detect non-metallic pipelines or conduits?

No, the Gemini-3 is designed to detect conductive materials such as metals. Non-metallic pipelines or conduits will not be detected unless they contain a conductive material.

Can I use the Gemini-3 to trace underground cables that are no longer energized?

Yes, the Gemini-3 can trace non-energized cables by detecting their conductive properties in the ground, using the inductive or conductive trace modes.

What are the benefits of using the V.C.O. audio response in complex environments?

The V.C.O. (Voltage Controlled Oscillator) increases audio pitch and volume as you approach a target, offering precise pinpointing, especially in environments where visual feedback is hard to monitor.

Can the Gemini-3 differentiate between ferrous and non-ferrous metals?

The Gemini-3 does not have discrimination between ferrous and non-ferrous metals. It detects all conductive materials equally.
What is the maximum distance between the transmitter and receiver when using the conductive trace mode?
The maximum distance depends on the conductivity of the object, but in optimal conditions, you can trace objects up to 50 feet from the transmitter. For longer distances, reposition the transmitter closer to the area being traced.
Is it possible to tune the Gemini-3 for optimal performance in cold weather conditions?
Yes, in cold weather, alkaline batteries perform better than standard carbon-zinc batteries. Ensure batteries are fresh, and recalibrate the device for any changes in ground conductivity due to frost or snow.

Replacement Parts

Battery Pack Sleeve

Battery Pack Sleeve

$8.95 USD
Latch (includes screws & nuts)

Latch (includes screws & nuts)

$8.95 USD
Fisher Metal Detector Battery Holder | 8 AA

Fisher Metal Detector Battery Holder | 8 AA

$15.99 USD

Depth Detection Factors

The detection depth of a metal detector is primarily influenced by the size of the search coil. Typically, a coil will detect coin-sized objects at a depth roughly equivalent to the coil's diameter. For example, a 4" coil is likely to detect coin-sized objects up to 4" deep, whereas an 8" coil may detect similar objects at a depth of up to 8". However, detection depth can be significantly affected by several variables, including electromagnetic interference (EMI), detector sensitivity settings, and soil mineralization. 

Soil conditions play a crucial role in depth detection. Here are three common soil types that can impact performance: 

Highly Mineralized Soil: Rich in iron and other conductive minerals, this type of soil can cause false signals and reduce the detector's depth capability. The detector may struggle to differentiate between the soil and metal objects, leading to decreased accuracy. 

Wet or Saline Soil: Soils with high moisture content or salinity, such as those found near coastal areas, can enhance conductivity, causing the detector to register numerous false signals. This interference may mask deeper targets and limit the effective detection depth. 

Compact Clay Soil: Dense and compacted clay can create a challenging environment for metal detection. Its dense nature can impede electromagnetic signals, reducing the detector's sensitivity to deeper targets. Additionally, the moisture-retaining properties of clay may cause additional signal distortion. 

Understanding these factors and adjusting the detector's settings accordingly can help optimize detection depth and accuracy across various conditions.