This manual provides instructions for the Fisher GEMINI-3, a dual-coil metal detector designed to detect large objects and mineral veins at significant depths. It explains the basic operating theory involving the transmitter and receiver, and details four modes of operation: Inductive Search (Narrow Scan), Inductive Search (Wide Scan), Inductive Tracking, and Conductive Tracking. This manual is written in Spanish.
| Battery Type (Transmitter) | Eight AA 1.5 V |
|---|---|
| Battery Type (Receiver) | Eight AA 1.5 V |
| Alkaline Battery Life | 50 hours |
| Ni-Cad Battery Life | 20 hours |
| Warranty (Labor) | 1 year |
| Warranty (Parts) | 5 years |
A 55-gallon drum can be detected at a depth of 10 feet.
Yes, a very large object like a car can be detected at 20 feet or more.
Batteries should be replaced if the level indicator shows they are below 5.