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National Geographic Junior User Manual

National Geographic Junior
44 pages
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Junior
METAL
DETECTOR
INSTRUCTIONS &
LEARNING GUIDE
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National Geographic Junior Specifications

General IconGeneral
Adjustable LengthYes
Batteries RequiredYes
Operating Frequency6.6 kHz
WaterproofNo
Detection ModesAll Metal
Audio OutputSpeaker

Summary

Assembly Instructions

Detecting Basics

Quick Start Guide

Provides a brief overview of powering on and beginning treasure hunting with the metal detector.

Detecting Height

Specifies the optimal distance the search coil should be kept above the ground during operation.

Speed and Swinging Pattern

Details the recommended pace and overlap for sweeping the metal detector coil.

Adjustment and Discovery

Explains how to hold the detector and what happens when a target is found.

Sensitivity and Volume Control

Guides on adjusting the detector's sensitivity and audio output level for optimal performance.

Battery Indicator

Describes the LED indicator for battery status, signaling low power when red.

Safety Information

Battery Safety Information

Provides crucial guidelines for safe installation, use, and disposal of batteries.

General Safety Warnings

Outlines warnings regarding moving parts, modifications, and the detector's waterproof capabilities.

Product Information and Compliance

Metal Detector Code of Ethics

Outlines responsible practices for metal detecting, including legal and ethical considerations.

Warranty and Customer Service

Details the product's limited warranty and provides contact information for support.

FCC Compliance

Provides information on the device's compliance with FCC rules regarding radio frequency interference.

Learning Guide

Invention and Refinement

Traces the historical development of metal detectors from early inefficient models to modern portable devices.

Cool Science Fact

Shares an anecdote about a hobbyist rediscovering a lost class ring from nearly 50 years prior.

Metal Detecting Applications

Historical Applications and Improvements

Discusses early uses in expeditions and technological advancements leading to hobbyist-friendly detectors.

Underwater and GPS Features

Highlights advanced detector capabilities like underwater operation and integrated GPS systems.

How it Works

Principles of Electromagnetism

Explains that metal detectors operate based on electromagnetism, as described by Maxwell's Equations.

Transmitter and Receiver Coils

Details the function of the two coils in detecting metal objects by creating and sensing magnetic fields.

Detector Operation Insights

Keeping the Detector Moving

Explains the importance of continuous movement for the electromagnetic relationship to work effectively.

Detection Depth and Object Condition

Discusses factors affecting detection depth and why oxidized objects are harder to find.

Metal Discrimination Capabilities

Explains how sophisticated detectors can differentiate between various types of metals.

Archaeology and Metal Detecting

Collaboration Between Hobbyists and Archaeologists

Discusses how metal detecting enthusiasts can assist archaeologists in locating valuable historical sites and artifacts.

Significant Archaeological Discoveries

Highlights a notable Viking era discovery in England made by a hobbyist, aiding historical research.

Field Research Application

Battlefield Survey Methodology

Describes how hobbyists assisted in surveying the Little Bighorn battlefield by marking finds instead of digging.

User Notes Section

A dedicated space provided for users to record observations, findings, or other relevant information.

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