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Radio Shack

63-3004 Discovery 2

Page created December, 2010

Might be derived from one of the Big Bud series, or a variation on the early Tracker II or III.

Scroll down for an OCR Text scan of original printed manual


Discovery 2 Metal Detector (630-3004) Faxback Doc. # 7502

Weight:.............................................................. 3 lbs

Type:.................................................................. VLF

Distance Range:

Coins:............................................................... 8"

Large Objects:................................................. up to 5'

Search Coil:........................................................... 10"

Audio:.......................................... Speaker/1/4" Earphone Jack

Batteries:............................................................ 2 9V

Battery Life:............................................... approx. 30 Hrs

Operating Frequency:....................................... 6.6 kHz +/- 10%

Meter with Coin Depth Indicator

All Metal Mode with Re-Tune Button

Motion Discriminate Mode

Pull Tab Eliminator

Ground Cancel Control

Sensitivity Control

LED Low Battery Indicator

Headphone Jack

Lightweight: Only 3 LBS.

Has deep sensitivity in both all Metal VLF 6 kHz Mode and Motion

Discriminate Mode. Will detect coins up to 8 Inches deep and larger

objects up to five feet deep.

10 Inch Magnum Search Coil for Maximum Power, can be submerged in water

up to the Instrument cabinet for underwater searching.

Sensitive enough to detect small gold nuggets. Excellent for prospecting

and relic hunting. Operates in mineralized ground or on the beach with

full power.

Has full Discriminator Control for elimination of trash. Use the Pull

Tab Eliminator to reject pull tabs only without nickles and small gold.

Three Tone Audio Identification helps Identify targets before digging, when

used in the Discriminate or Tab Eliminator Mode. Has low tone for nickles,

medium tone for tabs and most gold, and high tone for other coins and

silver.

Uses two 9 Volt Alkaline Batteries. Battery life approximately 30 hours.

Easy to operate. Comes with illustrated Operator's Manual.

Detector Adjustment--Ground Setting:

1. Hold waist high and set Ground all the way up.

2. Set Sensitivity half way up.

3. Push Tune for Threshold tone. If not heard, then turn up Sensitivity.

4. Drop coil to half waist high.

5. Adjust Ground until tone does not change.

Q: The metal detector works fine at home. However, it constantly beeps

at the beach close to salt water.

A: Salt water contains salt which is Sodium Chloride. The Chloride ion

binds better and thus may form Zinc Chloride, etc. and the unit is

picking up the sensitivity of these trace metals. Adjust the

sensitivity.


Cat. No. 63-3004 DISCOVERY 2 OWNER'S MANUAL

NOTE: Images are excluded due to the memory requirements; therefore, there will be references to illustrations that do not exist in this text only document. All illustrations can be found in the original manual published by Radio Shack. The Discovery3 is discontinued and is no longer available.

©1995 Tandy Corporation

All Rights Reserved

Radio Shack is a registered trademark used by Tandy Corporation

Please read before using this equipment.

TABLE OF CONTENTS

INTRODUCTION .................................3

ASSEMBLY.....................................4

THE SEARCHCOIL ..............................6

INSTALLING THE BATTERIES.....................7

USING HEADPHONES.............................9

Hearing Comfort and Your Health .........9

OPERATION..................................1 1

HOW TO USE YOUR METAL DETECTOR..............11

The Viewmeter ..........................11

Turning On Your Detector................12

Adjusting the Controls in the Field.....12

Setting the Controls ...................13

Setting the Saltwater Balance ..........14

Sensitivity.............................15

Sweeping Hints..........................16

Detection Hints.........................17

FINE TUNING ................................19

Discriminate............................19

Pull Tab Reject Setting.................20

TONE VARIATIONS ............................21

Three Tone ATI Identification ..........21

Threshold Tones.........................22

CARE AND MAINTENANCE ........................23

Welcome to the fascinating and rewarding world of Treasure Hunting! Now, with Discovery 2, you and your whole family can open up a whole new world of fun and excitement as you go prospecting and beach combing.

It is said that almost all money lost or hidden in the world has yet to discovered. Relics, jewelry, silver, gold and valuables can be found just about any where! You'd be amazed at what you may find beneath the ground where you live. So, in the true spirit of adventure. Happy Treasure hunting!

ASSEMBLY

The Discovery2 Metal Detector is easy to assemble:

Follow these steps to assemble your metal detector.

1. Insert the lower stem into the upper stem.

2. Press the adjustment button on the lower stem as you push the lower stem into the upper stem. The adjustment button clicks into place as it reaches an adjustment hole. Adjust the stem of the detector to a length that enables you to maintain a comfortable upright posture. (You should be able to hold the detector with your arm relaxed at your side.) As you adjust the length of the stem, keep in mind that the searchcoil should be approximately 1/2 to 2 inches from the ground.

4. Place the searchcoil plug (which does the detection) into the plug connection at the base of the control housing. Be sure the holes and pins line up correctly. Push the plug in until the plug is secure. Caution: Do not force the plug or you may damage it.

Note: When disassembly is required, remove the plug by pulling at the connection point.

THE SEARCHCOIL

Adjust the searchcoil so it is level with the ground. Tighten the knob at the end of the searchcoil to keep the searchcoil from rotating or wobbling.

The searchcoil is waterproof. You can put it in fresh or saltwater up to the control housing. After you use the searchcoil in saltwater, rinse it with fresh water to prevent corrosion of the metal parts.

INSTALLING THE BATTERIES

Your metal detector requires two 9-Volt batteries. We recommend alkaline batteries such as Radio Shack Cat. No. 23-553.

Follow these steps to install the batteries.

1. Press the battery compartment covers in the direction of the arrows.

2. Snap one battery into each of the terminals. Place the batteries inside the battery compartments.

3. Replace the battery compartment covers.

Note:

· If the Low Battery indicator flashes momentarily when you turn off POWER, you know it is working properly and the batteries are good.

· If the Low Battery indicator lights and stays on, replace the batteries.

· Approximately 90% of metal detector problems are caused by weak, dead or improperly connected batteries. If the unit does not come on, comes on but has weak volume, will not tune properly, or has erratic operation or drifts, replace the batteries.

· When you install a fresh set of 9-Volt alkaline batteries, keep track of your operating time. After about four or five hours of use, switch the batteries. Put the left battery into the right compartment, and the right battery into the left compartment. The audio draws one battery down faster than the other and switching them helps insure equal drain. You can extend battery life by using headphones, which require less power. Remove the batteries if you do not plan to use the detector for a week

USING HEADPHONES

Using headphones with your Discovery2 Metal Detector will not only increase the life of your batteries, it will increase your ability to identify subtle changes in the threshold tones for better detection results.

To use headphones with your detector, insert the headphone's 1/4-inch plug into the headphone jack located at the top of the control housing. Then proceed with your search.

Hearing Comfort and Your Health

To protect your hearing, follow these guidelines when you use headphones.

Set the volume to the lowest setting before you begin listening. After YOU be

Warning: Do not wear headphones while operating your detector in traffic areas. This can create a traffic hazard.

Even though some headphones are designed to let you hear some outside I sounds when listening at normal volume levels, they still present a traffic ha

OPERATION

HOW TO USE YOUR METAL DETECTOR

Now that your metal detector is assembled, it's time to learn how to use it. The steps in this section explain each control on the control housing and handle, and how to use your metal detector. Take a moment to become familiar with the position and use of the controls before using your metal detector.

The Viewmeter

The Viewmeter is located at the top of the con trol housing and measures the approximate depth of coin-sized objects, in inches. The Viewmeter only registers depth measurements when ALL METAL is used.

Turning On Your Detector Hold the detector in a position comfortable for you, then turn it on by rotating SETTING to ALL METAL.

Adjusting the Controls in the Field The tuning skills you will learn while preparing your detector will be put to good use during your actual search. You will know how each control works so you can fine-tune your detector quickly.

If you wish to test the accuracy of your tuning at your current location in the field, take a few samples of different kinds of metal with you. Note that some metals, when left exposed to the elements, become corroded. So it is always wise to carry around a piece of corroded metal.

Setting the Controls

The detector is now set to ALL METAL. This set ting has the greatest detection level and has no discrimination between different types of metals.

GROUND adjusts detection balances between elements normally found in the ground and me tal objects.

Follow these steps to set GROUND.

1. Rotate VOLUME two-thirds of the way toward MAX.

2. Hold the searchcoil at least waist high and rotate GROUND toward NORM. 3. Push and immediately release TUNE. You should barely hear a threshhold tone.

4. Drop the searchcoil to within 1/2 inch of the ground. If you correctly set GROUND, the threshold tone should not change significantly. If it does change, either gaining or losing tone, repeat the steps above until you find a setting where the sound does not vary significantly when held from 1/2-inch to 1-inch above the ground.

Note: Setting GROUND may take a little time, but it is critical for accurate opera tion.

When you are satisfied that GROUND is set for peak performance, there is need to reset it until the detector is used at a different site.

Setting the Saltwater Balance

To balance the effects of saltwater, use the same general procedures as used for ground balancing, but slowly rotate GROUND toward SALT in Step 2 under "Setting the Controls."

Sensitivity

To get the best results in your detection efforts, you need to adjust SENSITIVITY. SENSITIVITY is used in the ALL METAL, DISC, and PULL TAB REJECT settings. (See "Fine Tuning" for information on the DISC and PULL TAB REJECT controls.)

To adjust the searchcoil's ability to detect lower level signals, rotate SENSITIVITY in a clockwise direction, from LOW to HIGH. For maximum performance, set SENSITIVITY as high as possible. If the detector makes a "chattering" noise, decrease SENSITIVITY until the "chatter" stops.

Sweeping Hints

Keep the searchcoil in a constant parallel position to the ground throughout the sweep. Move the searchcoil slowly from side to side, covering about a 3-foot area, overlapping each sweep. The threshold tone should peak as you pass the target center. (Hurrying will cause you to miss targets.)

Note: The searchcoil will not detect without motion.

Be careful not to swing the searchcoil upward at the end of each sweep. The swing up can cause the detector to emit false signals. Keep the searchcoil parallel to the ground at all times but don't touch the ground. Hitting the ground may cause a false signal.

Detection Hints No detector is 100 percent accurate. Various conditions and objects may adversely influence metal detection. Its reaction depends on a number of things:

· the angle at which the object rests in the ground

· the size of the object

· the amount of iron in the object

It is helpful to hunt areas twice; the second time, go at right angles to the first time, making an "X" pattern. Note: The target will be directly below the "X" at the point of the loudest response.

This allows you to detect some targets that were hidden the first time due to the sweep direction. If trash in an area is so heavy that you are getting false signals, slow your sweep speed and use shorter sweeps.

Note:

· A good detection has a consistent rise and drop of threshold tone. A poor detection has irregular highs and lows in threshold tones. If the metal is in the shape of a circle, like a watch or loop of wire, opposite reactions may occur.

· There are ways to tell whether threshold tones are good deep signals or trash. A good target response repeats as you swing the searchcoil over the suspected target. Trash-induced signals tend to not repeat.

· Recently buried coins might not respond the same as coins buried for a long period of time.

· Some nails, nuts, bolts, and other iron objects (such as old bottle caps) oxidize and create a halo effect around these objects.

A halo effect is caused by a mixture of natural elements in the ground and the oxidization created by different metals. Because of the metal mixtures, target signals may not be in a "fixed" position. This effect makes these objects very hard to reject. (See "Fine Tuning."3 ~

FINE TUNING

Once you become familiar with how your metal detector works, you can fine-tune it to be more selective in what it finds. You can make it tune out undesirable objects and tune in precious metals. For example, you can set it to distinguish between iron and gold. With the DISCRIMINATE and PULL TAB REJECT SETTING controls, you can determine an even greater distinction between these metals.

Discriminate

DISCRIMINATE distinguishes between junk and valuable metal objects, and automatically rejects nails and most iron. To adjust DISCRIMINATE, rotate SETTING to DISC. Then, rotate DISCRIMINATE from LOW to HIGH. As you rotate DISCRIMINATE in a clockwise direction, the detector progressively rejects other iron, foil, nickels, pennies and dimes. The range from LOW to HIGH changes the frequency of your detector, which allows the detector to reject these metals.

The higher you tune DISCRIMINATE, the higher is the possibility that a tiny piece of precious metal might also go undetected. Don't adjust DISCRIMINATE so high that small valuable pieces are overlooked.

Note: Because ground elements affect detection, wait until you are in the field to decide the degree of discrimination you wish to use. Each expedition presents new challenges.

Pull Tab Reject Setting

The PULL TAB REJECT setting automatically re most iron and small foil.

Since many types of gold are rejected along with nickel, it is often desirable to eliminate pull tabs without rejecting nickels. To adjust PULL TAB REJECT, rotate SETTING to PULL TAB REJECT. Then adjust SENSITIVITY. (See "Sensitivity.") The SENSITIVITY adjustments let you block out the more erratic signals of junk metal.

LOW~HIGH

· You will need to determine the DISCRIMINATE and PULL TAB REJECT SETTING levels that work best for each individual site.

· Although pull tabs or tab pieces have nearly the same detection properties as nickels and some gold rings, there will be differences that only time and experience with your detector will uncover.

· If you have detection problems, see "Setting the Controls" and follow the steps for setting GROUND. If you still have problems and feel your detector may need service, contact your local Radio Shack store for assistance.

TONE VARIATIONS Three Tone ATI Identification

The Discovery2 Auto Target Identification (ATI) system automatically classifies detected metal objects into three audio (sound) categories. When operating in the DISC or PULL TAB REJECT SETTINGS, detected targets sound three distinct tone identifications, low, medium and high, for quick and easy classification of

Threshold Tones

The threshold tone may vary slightly while you search due to soil changes. This does not usually affect the sensitivity of the unit and should not require further adjustment.

If the threshold tone changes significantly, you might need to readjust GROUND. Sometimes the change in threshold tone is due to reasons other than ground conditions~ and can be easily corrected by a simple procedure. Raise the searchcoil one foot from the ground and push TUNE. Lower the searchcoil to the ground again. If this does not correct the problem, repeat the full procedure to set GROUND. (See "Setting the Controls.") If you continue to have problems, contact your local Radio Shack store for assistance.

Your Discovery2 Metal Detector is an example of superior design and craftsman ship. The following suggestions will help you care for your metal detector so you can enjoy it for years.

Handle the metal detector gently and carefully. Dropping it can damage circuit boards and cases and can cause the metal detector to work improperly.

Use and store the metal detector only in normal temperature environments. Temperature extremes can shorten the life of electronic devices and distort or melt plastic parts.

Keep the metal detector away from dust and dirt, which can cause premature wear of parts.

Wipe the metal detector with a damp cloth occasionally to keep it looking new. Do not use harsh chemicals, cleaning solvents, or strong detergents to clean the metal detector.

 

RADIO SHACK

A Division of Tandy Corporation

Fort Worth, Texas 76102

 

RADIO SHACK LIMITED WARRANTY

This product is warranted against defects for 1 year from date of purchase from Radio Shack company-owned stores and authorized Radio Shack franchisees and dealers. Within this period, we will repair it without charge for parts and labor. Simply bring your Radio Shack sales slip as proof of purchase date to any Radio Shack store. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage. EXCEPT AS PROVIDED HEREIN, RADIO SHACK MAKES NO EXPRESS WARRANTIES AND ANY IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THE WRITTEN LIMITED WARRANTIES CONTAINED HEREIN. Some states do not permit limitation or exclusion of implied warranties; therefore, the aforesaid limitation(s) or exclusion(s) may not apply to the purchaser. This warranty gives you specific legal rights and you may also have other rights which vary from state to state. we Service What we Sell

RADIO SHACK

A Division of Tandy Corporation

Fort Worth, Texas 76102


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