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ABOUT YOUR DETECTOR
Two-box metal detectors have long been used by
prospectors, geologists, treasure hunters and public utility
companies to locate large, deep objects, ore vein, pipes
and cables. Fisher Research Laboratory is the recognized
leader in the eld, in fact, they were granted the rst two-box
metal detector patent over 60 years ago.
You might think it would be difcult to improve on a product
that has been in a constant state of development for so many
years. But the fact is, the GEMINI-3 is probably the biggest
leap forward in two-box design since it replaced vacuum
tubes with transistors back in the 1950s.
The new GEMINI-3 goes 10 to 20 percent deeper than its
predecessor. It will trace most pipes and ore veins at least
50 percent farther, and the new crystal controlled circuitry
is rock stable. The old metal-rim antenna is gone and so
are the hard-to-get batteries. The GEMINI-3 is easier to use,
two pounds lighter, & features Voltage Controlled Oscillator
(VCO), audio target response for precision pinpointing.
Your Fisher GEMINI-3 is a high quality, precision instrument
engineered by the oldest and proudest name in metal
detectors. Treat it right, read this instruction manual thoroughly
and practice often. Who knows, with skill, patience and a
little luck, you may nd the BIG ONE.
Drop us a line if you have any questions, comments or
exciting GEMINI-3 stories. In the meantime . . .
Happy hunting,
FISHER RESEARCH LABORATORY
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SPECIFICATIONS
Dimensions
Length on handle ............................................................49 1/2 inches
Transmitter-Receiver Box Assembly
.................................................9 1/4 x 12 x 6 inches(23.5 x 30 x 15 cm)
Weight
Complete ...........................................................................7 lbs. (3.2 k)
Transmitter ........................................................................2.4 lbs. (1.1 k)
Receiver ...........................................................................2.9 lbs. (1.3 k)
Handle ..............................................................................1.7 lbs. (.75 k)
Frequency
RF Search and Trace ............................81.92 KHz Crystal Controlled
................................................. Audio Target Response (VCO)
Operating Modes
Search
1. Narrow Scan, Inductive
2. Wide Scan, Inductive
Trace
1. Inductive
2. Conductive
Target Response
Meter ...................................................... 2 1/4 x 1 3/4 inches, Analog
Speaker ............................................................2 1/4 inches, 100 ohm,
Moisture Proof Cone
Headphones .......................................... 1/4 inch Jack, 8-16 ohms,
............................................................................................Stereo/Mono
Batteries
Receiver .............................................................................. (8) AA 1.5V
Transmitter .......................................................................... (8) AA 1.5V
Life ...........................................Carbon Zinc ............................ 30 Hours
.................................................Alkaline .................................... 50 Hours
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Gemini-3manual-.ind2 3 6/13/06 2:52:51 PM