Wide Scan Inductive Search

SEARCHING

This mode of operation is the preferred method for searching a large area quickly. Two operators are required and the handle assembly is not used.

The Wide Scan Inductive Search mode is practical only when searching for ore veins, pipes or cable 40 feet long or more. If the operators are too close together, “direct air coupling” will result, meaning the receiver is detecting the Transmitter signal directly through the air instead of through a buried conductor.

Figure 7. Wide Scan

Inductive Search

Set Up

		Two operators line up at least 20 feet apart, one with
		the receiver and one with the transmitter, parallel to
		the assumed direction of the buried conductor. The
		transmitter and receiver should be in line with each
		other, facing the same direction.
	Tuning	1. Set the transmitter:
	Tuning	Power: ON
		Power: ON
		2. Set the receiver:
		Power: ON
		Sensitivity: ZERO

Gemini-3manual-.ind2 12

SEARCHING

3. Slowly increase the SENSITIVITY control until the audio signal is heard, then reduce SENSITIVITY until the audio just disappears. This is the point at which “air coupling” has been eliminated.

Operating

1. Keeping the receiver and transmitter sections in line, the two operators can now walk their predetermined search pattern. The SENSITIVITY control should be checked periodically to ensure that the receiver is tuned just below the “air coupling” threshold.

2.If both operators cross the same conductive body (pipe, cable, ore vein, etc.) at approximately the same time, the receiver tone and meter will rise to indicate its presence. The receiver operator should alert the transmitter operator that they have detected a conductive object.

3.The receiver operator should then hold his position while the transmitter operator moves back and forth for the strongest receiver response. At this point, the transmitter operator should stop and place the instrument on the ground with the handle grip on top.

4.The receiver operator can then pinpoint the buried

object by moving the receiver back and forth in line with the transmitter. The object should be directly beneath the point of maximum response.

5. The receiver operator may then trace the signal along the length of the unseen object as described in the Inductive Trace section (page 12).

6/13/06 2:52:53 PM

GEMINI-3 specifications

The Fisher GEMINI-3 is a sophisticated metal detector designed for both hobbyists and professionals seeking high-performance in treasure hunting. Launched by Fisher Research Labs, this model offers a myriad of features that make it one of the most popular detectors on the market.

One of the standout characteristics of the GEMINI-3 is its dual search capabilities. The detector is equipped with both a 10-inch coil and a 5-inch coil, allowing users to operate in various terrains and conditions. The larger coil is perfect for searching wide areas, while the smaller coil helps in pinpointing targets in more cluttered sites.

The GEMINI-3 utilizes advanced VLF (Very Low Frequency) technology, which provides enhanced sensitivity to both ferrous and non-ferrous metals, helping users to distinguish between valuable items and common trash. This technology significantly reduces the chances of missing hidden treasures beneath the surface.

Another impressive feature is the detector's digital target identification system, which provides users with a numerical readout corresponding to the type of metal detected. This identification system enhances the hunting experience, allowing users to make informed decisions about whether to dig or move on to the next target. Additionally, the GEMINI-3 boasts multiple discrimination modes, enabling operators to filter out unwanted items like iron and foil while honing in on more valuable finds.

The GEMINI-3 is built for durability and usability. The control panel is user-friendly and designed to facilitate quick adjustments in the field. The lightweight construction of the detector ensures comfort during prolonged use, making it an ideal choice for long treasure-hunting sessions.

Moreover, the detector is powered by a rechargeable battery, providing extended use without the inconvenience of constantly changing batteries. The impressive battery life allows treasure hunters to focus more on their quest and less on equipment management.

In conclusion, the Fisher GEMINI-3 combines advanced features with user-friendly design, making it a top choice for metal detection enthusiasts. Its versatility, technology, and practical characteristics empower treasure seekers to explore various environments efficiently, unearthing hidden treasures with ease.