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Radio Shack

63-3012

Discovery 3000

Page created December, 2010

Similar to the BH Sharp Shooter with added Volume control.


Scroll down or click here for an OCR text scan of the original manual

Scroll down or click here for a Field Test


Discovery 3000 Metal Detector

(630-3012) Specifications Faxback Doc. # 34722

Power Requirements: .................... Two (2) 9 Volt Alkaline Batteries

(Radio Shack Cat.No. 23-553)

Operating Frequency: ............................................. 6.6 kHz

Target and Mode Readout: ..................................... Digital LCD

Low Battery Indicator: ....................................... Digital LCD

All Metal No-Motion and Motion Discrimination: ............... Auto Ground

Target ID: ........................................................ 3 Tone

Headphone Jack: ................................................. 1/4 Inch

Search Coil Size: ...................................... 8 Inch Open-Faced

Coil System: .................................................. Waterproof

S-Rod Handle System with Adjustable Aluminum Stem and Automatic Ground

Balance.

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

Shipping Weight: .............................................. 5.255 lbs.

NOTE: Must be over-wrapped for shipping because the gift box is too light

(chipboard box).

Size (HWD): ................................... 28.5 x 10.25 x 6.25 Inches

Batteries: .......................................... 2 x 9 Volt, alkaline

Specifications are typical; individual units might vary. Specifications are

subject to change and improvement without notice.

Your RadioShack Discovery 3000 Metal Detector is an example of superior

design and craftsmanship. The following suggestions will help you care

for your detector so you can enjoy it for years.

User and store the detector only in normal temperature environments.

Temperature extremes can shorten the life of electronic devices and

distort or melt plastic parts.

Keep the detector away from dust and dirt, which can cause premature

wear of parts.

Handle the detector gently and carefully. Dropping it can damage

circuit boards and cases and can cause the computer to work improperly.

Use only fresh batteries of the required size and type. Old batteries

can leak chemicals that damage your detector's electronic parts.

Wipe the detector with a damp cloth occasionally to keep it looking new.

Do not use harsh chemicals, cleaning solvents, or strong detergents to

clean it.

Modifying or tampering with the detector's internal components can cause a

malfunction and might invalidate its warranty. If your detector is not

performing as it should, take it to your local RadioShack store for

assistance.

The searchcoil supplied with the detector is waterproof and may be

submerged in either fresh or salt water. However, do not let water enter

the detector's chassis. After using the searchcoil in salt water, rinse

it with fresh water to prevent corrosion of the metal parts.

Resetting The Detector

If the detector does not work properly after you replace the batteries, or

if it stops working and sounds a continuous tone, you might need to reset

it.

To reset the detector, turn POWER/VOLUME on and off three or four times.

Treasure Hunter's Code of Ethics

All treasure hunters might be judged by the example you set. Here are a

few basic rules you should follow while using your detector.

Always obtain permission before searching any site.

Respect the rights and property of others.

Observe all national, state, and local laws while treasure hunting.

Never destroy historical or archaeological treasures. If you are not

sure about an object you have found, contact a museum or historical

society in your area.

Leave the land and vegetation as it was. Fill in any holes you dig.

Use your detector only in safe areas.

Dispose of any junk you find, only in approved areas. Do not leave it

for the next treasure hunter to find.

With your RadioShack Discovery 3000 Metal Detector, you can hunt for

coins, relics, jewelry, gold, and silver just about anywhere. The

Discovery 3000 is designed to be versatile and easy to use.

Loaded with features, the detector lets you locate and identify all types

of metals with pinpoint accuracy. It can distinguish between different

types of metals and "tune out" the ones you don't want to search for. The

detector's notch setting lets you manually fine-tune it for more accurate

discrimination.

The detector's features include:

Liquid Crystal Displays - show the detector's current search

setting and the probable type of metal

being detected. A separate display lets

you know when it is time to replace the

batteries.

Three-Tone Audio Discrimination - sounds distinctive tones for different

types of metals, to make target

identification easier.

Notch and Auto Notch Settings - lets you set the detector to distinguish

between junk metal and valuable metal,

and automatically ignore junk metal

while you search.

Ultra Slow Sweep VLF (Very Low - effectively distinguishes between

Frequency) Discrimination different types of metals when the

detector is swept at slow speeds.

Ground Trac - lets you automatically adjust the

detector to the mineral content of the

ground you are searching. This reduces

false alerts and increases the

detector's efficiency.

Headphone Jack - lets you connect headphones (not

supplied) to the detector.

Waterproof Design - lets you use the detector's coil under

water, and use the detector in just

about any type of weather.

Note: Your metal detector requires two 9-volt alkaline batteries (not

included) for operation.

Optional Accessory

The medium-sized searchcoil supplied with your detector efficiently finds

deeply-buried objects, and is ideal for general use. However, if you are

looking for tiny objects (coin-sized and smaller) that are not buried too

deeply, a 4-inch search coil (such as RadioShack Cat. No. 63-3009, not

supplied) might work better.

The searchcoil is highly sensitive and offers superior performance when

hunting for small objects such as gold nuggets or small pieces of jewelry,

or when hunting in mineralized or highly trashy areas. Because of its

smaller size, it has a narrower detection field and is less susceptible to

interference from junk metal. This makes it better able to isolate

precious metals in these areas.

Turning ON the Detector

1. Hold the detector in a comfortable position.

2. Turn on the detector by turning POWER/VOLUME clockwise until it

clicks.

The detector beeps 3 times, arrows point to all options on both

displays, and the LOW BAT indicator lights for a few seconds. Then an

arrow points to ALL METAL on the bottom display.

Note: Many detector problems are caused by weak, dead, or improperly

connected batteries. If the detector does not turn on, has

weak volume, will not tune properly, operates erratically, or

drifts, check both batteries.

3. Turn POWER/VOLUME to adjust the sound to a comfortable listening

level.

Setting a Target mode

Your detector has four built-in target modes which determine what types of

metal your detector will search for and reject.

ALL METAL

DISC (discrimination)

NOTCH

AUTO (automatic) NOTCH

When the detector is set to a target mode, the top display is blank until

the detector detects a specific type of metal. Then the arrow points to

that metal size and type.

All Metal

When the detector is set to ALL METAL, it sounds a tone and displays an

indicator when it detects any type of metal as long as the metal is under

the searchcoil.

The detector automatically sets itself to this target mode when you first

turn it on.

The detector is set to maximum sensitivity in the ALL METAL target mode

when you press ALL METAL. Adjusting DISC/NOTCH (see "Adjusting

DISC/NOTCH", below) has no effect in this mode.

To set the detector to the ALL METAL target mode from another mode, press

ALL METAL on the front panel. An arrow on the bottom display points to

ALL METAL.

Disc

When the detector is set to DISC, it sounds a tone an displays an

indicator when it detects many types of metal, and ignores the general

metal type that you specify by adjusting DISC/NOTCH (see "Adjusting

DISC/NOTCH", below).

Notes: This target mode lets you set the detector to ignore a wide

category of metal types. If you want to set the detector so it

ignores only a specific type of metal, see "Notch" or "Auto Notch"

below.

The detector does not detect iron in this target mode.

To set the detector to the DISC target mode, press DISC. An arrow on the

bottom display points to DISC.

Then adjust DISC/NOTCH to select the type of metal you want to detector ot

ignore (see "Adjusting DISC/NOTCH" below.)

As you turn DISC/NOTCH from left to right, the detector will ignore the

metals and/or items shown on the dial. In addition to the metals listed

on the dial, the following will be ignored at the points indicated:

DIAL AREA WHERE

IGNORE WILL OCCUR

IGNORED ITEM STARTING AT LOW (approx.)

Small Gold Items IRON/FOIL/NICKELS First 1/3 of dial

Medium Gold Items PULL TABS From 75 to 105 degrees of dial

Larger Gold Items SCREW CAPS/ZINC 1 CENT From 105 to 135 degrees of dial

NOTCH

Use this target mode to notch (set a narrow range for) the detector's

search range so it does not detect specific kinds of items such as

aluminum and pull tabs, while still detecting items such as gold or

silver.

When the detector is set to NOTCH, it sounds a tone and displays an

indicator only when it detects the type of metal you specify and it

ignores the types of metal you specify by adjusting DISC/NOTCH (See

"Adjusting DISC/NOTCH", below.)

Notes: This target mode lets you manually set the detector to ignore only

a specific type of metal. If you want to set the detector so it

automatically ignores specific types of metal, see "Auto Notch".

The detector does not detect iron and most small foil pieces in

this target mode.

follow these steps to set the detector to the NOTCH target mode.

1. Press NOTCH on the front panel of the detector. An arrow on the

bottom display points to NOTCH.

2. Find a sample of the material you want the detector to ignore (such as

a pull tab), place the item under the searchcoil, then adjust DISC/

NOTCH until it does not detect the material.

3. Find a sample of the material you want the detector to find (such as a

nickel or gold ring), place the item under the searchcoil, then make

sure the detector detects the material. If the detector does not

detect the material, repeat Step 2, as necessary, to adjust the notch.

Note: Some junk metal, such as pull tabs and pieces of pull tabs,

have nearly the same characteristics as nickels and some gold

rings. If this happens, you might not be able to narrow the

detector's notch closely enough to prevent the detector from

detecting the pull tabs.

Auto Notch

When the detector is set to AUTO NOTCH, it sounds a low tone and displays

an indicator when it detects nickels and small gold objects, and

automatically ignores most junk metal items. It sounds a high tone when

it detects metals such as cooper, silver, and brass.

You can widen or narrow the range of metal types that the detector will

detect by adjusting DISC/NOTCH on the front of the detector (see

"Adjusting DISC/NOTCH", below).

Follow these steps to set the detector to the AUTO NOTCH target mode.

1. Press AUTO NOTCH. An arrow on the bottom display points to AUTO

NOTCH.

2. Adjust DISC/NOTCH on the front of the detector to widen or narrow the

range of metal types that the detector will detect.

Testing and Using the Detector

To learn how the detector reacts to different metals, you should test it

before you use it the first time. You can test the detector indoors and

outdoors.

Indoor Testing

1. Turn on the detector.

2. Set the target mode.

3. Place the detector on a wooden or plastic table, then remove any

watches, rings, or metal jewelry you are wearing.

4. Adjust the searchcoil so the flat part points toward the ceiling.

Note: Never test the detector on a floor inside a building. Most

buildings have metal of some kind in the floor, which might

interfere with the objects you are testing or mask the signal

completely.

5. Move a sample of the material you want the detector to find (such as a

gold ring or a coin) near the searchcoil.

If the detector detects the material, it sounds a tone and an arrow

appears on the top display next to the type of metal it found.

If the detector does not detect the material, make sure the target

mode is set correctly for the type of metal you are searching for (see

"Setting a Target Mode", above), then repeat Step 5.

Notes: If you are using a coin, the detector will detect it more

easily if you hold it so a flat side is parallel with the flat

side of the searchcoil (not the edge).

If the detector is currently set to the ALL METAL target mode,

you do not need to move the item. Simply hold it close to the

searchcoil.

Outdoor Testing and Use

1. Turn on the detector.

2. Set the target mode.

3. Find an area on the ground outside where there is no metal.

4. Find a sample of the material you want the detector to find (such as a

gold ring or a coin) and place it on the ground. (If you are using

valuable metal such as gold to test the detector. Mark the area where

you placed the item, to help you fine it later. Do not place it in

tall grass or weeds).

5. While holding the searchcoil level to the ground about 1-2 inches

above the surface, slowly move the searchcoil over the area where you

placed the sample, sweeping the searchcoil in a side-to-side motion.

Searchcoil Sweeping Hints:

Never sweep the searchcoil as if it were a pendulum. Raising the

searchcoil while sweeping or at the end of a sweep will cause false

readings.

If the detector is currently set to the ALL METAL target mode, you

do not need to sweep the searchcoil to detect the material.

Sweep slowly - hurrying will cause you to miss targets.

If the detector detects the item, it sounds a tone and an arrow

appears on the top display next to the type of metal it found.

If the detector does not detect the material, make sure the target

mode is set correctly for the type of metal you are searching for (see

"Setting a Target Mode", above), then repeat Step 5. Also, make sure

you are moving the searchcoil correctly.

Notes: The detector responds with a strong signal when it detects

most valuable metal objects. If a signal does not repeat

after you sweep the searchcoil over the target a few times,

the target is probably junk metal.

False signals can be caused by trashy ground, electrical

interference, or large irregular pieces of junk metal. False

signals are usually broken or non-repeatable.

6. If the detector is set to the ALL METAL target mode, press GROUND TRAC

on the front of the detector as you search, to adjust the detector to

the mineral content of the ground you are searching (see "Using GROUND

TRAC", below).

7. Try finding other metal in the area. When you find a metal item, wait

a few seconds after the tone stops before continuing, to allow the

detector time to reset.

False Signals

Your detector is extremely sensitive, and will find even deeply-buried

metal. Because of this, trash-induced signals and other sources of

interference might cause signals that seem confusing. The key to handling

these types of signals is to dig for only those targets that emit a

strong, repeatable signal. As you sweep the searchcoil back and forth

over the ground, learn to recognize the difference between signals that

occur at random and signals that are stable and repeatable.

To reduce false signals when searching very trashy ground, scan only a

small area at a time using slow, short overlapping sweeps. To help

prevent erratic signals and pinpoint targets in trashy areas, try a

smaller searchcoil (see "Optional Accessory" in Faxback Doc. # 51686).

Fine-Tuning the Detector

After you become familiar with how your detector works, you can fine tune

it to make it less sensitive to interference and more selective in what it

finds. For example, you can set it so it ignores junk metal such as pull

tabs but still registers silver and cooper coins.

Adjusting Sensitivity

Broadcast antennas and power lines can cause the detector to indicate

false signals and operate erratically. Adjust SENSITIVITY on the front of

the detector to help reduce or eliminate these false signals.

To adjust the sensitivity, turn SENSITIVITY clockwise to increase it, or

counterclockwise to reduce it.

Notes: For maximum detection depth, always leave SENSITIVITY set as high

as possible while using the detector.

If you set the detector's sensitivity too high, the top display

might randomly display arrows and the detector might sound false

tones.

Using GROUND TRAC

The detector has a GROUND TRAC circuit that adjusts to the mineral content

of the ground you are searching. Since the mineral content of ground

changes from place to place, frequently press GROUND TRAC on the front of

the detector as you search.

Adjusting DISC/NOTCH

Discrimination is the detector's ability to differentiate between types of

metal and either find or ignore them. DISC/NOTCH adjusts the detector's

discrimination.

If the detector is set to the DISC, NOTCH, or AUTO NOTCH target mode,

adjust DISC/NOTCH clockwise toward HIGH to set the detector to ignore

items such as bottle caps, zinc pennies, and pull tabs, while still

detecting items such as nickels and small gold items.

Notes: The detector automatically sets itself to maximum sensitivity in

the ALL METAL target mode. Adjusting DISC/NOTCH has no effect in

this mode.

If you set the detector's discrimination too high, the detector

will not detect some gold items.

Pinpointing a Target

Accurately pinpointing a target while detecting makes digging it up

easier.

Accurately pinpointing small metal objects takes practice. We suggest

that you practice finding and digging up small metal objects on your own

property before you search other locations.

Follow these steps to pinpoint a target.

1. When the detector detects a buried target, continue sweeping the

searchcoil over the target in a narrowing side-to-side motion.

2. Make a visual note of the exact spot on the ground where the detector

beeps.

3. Stop the searchcoil directly over this spot on the ground. Then move

the searchcoil straight forward away from you and straight back toward

you couple of times.

4. Make a visual note of the exact spot on the ground where the detector

beeps.

5. If necessary, repeat Steps 1-4 to zero in on the exact spot on the

ground where the detector beeps.

Assembling the Detector

Assembling your detector is easy and requires no special tools. Follow

these steps to assemble the detector.

1. Loosely attach the searchcoil to the lower stem using the supplied

bolt and knurled knob. Do not tighten the bolt and knob yet.

2. While pressing and holding down the button on the top of the lower

stem, slide the lower stem tube into the upper stem tube.

3. Adjust the stem to a length that lets you comfortably stand upright.

The stem should be long enough to let you comfortably hold the

detector so the searchcoil is level to the ground and about 1/2 to 2

inches above the ground with your arm relaxed at your side.

4. Wind the searchcoil's cable around the stem. Leave enough slack in

the cable to let you adjust the searchcoil when you are hunting on

uneven ground.

5. Insert the searchcoil's plug into the matching connector on the

detector's control housing. Make sure the pins on the plug align with

the holes in the connector.

CAUTIONS: The searchcoil's plug fits into the connector only one way.

Do not force it.

To disconnect the searchcoil's cable from the detector,

grasp the plug and pull it out of the connector. Never

pull on the cable.

6. Adjust the searchcoil to the desired position, then tighten it by

turning the bolt and knurled knob in opposite directions until they

stop.

CAUTION: Do not overtighten the searchcoil or use tools such as

pliers to tighten it.

Installing Batteries

You need two 9-volt alkaline batteries (such as Cat. No. 23-553) to power

your detector.

1. If the detector in on, turn POWER/VOLUME on the front panel fully

counterclockwise until it clicks to turn it off.

2. While pressing and holding down the release clip on the right side of

the battery compartment door, lift open the door.

3. Snap a 9-volt battery onto each battery terminal, then slide the

batteries inside the compartment.

CAUTIONS: Use only fresh batteries of the required size and type.

Do not mix old and new batteries, different types of

batteries (standard, alkaline, or rechargeable), or

rechargeable batteries of different capacities.

4. Carefully insert the tabs on the battery compartment door into the

slots on the detector, then press the door down until it clicks to

close it.

CAUTIONS: Never leave dead or weak batteries in the detector. Batteries

might leak and damage the detector.

If you do not plan to use the detector for a week or more,

remove the batteries.

Dispose of batteries properly; do not bury or burn them.

The LOW BAT indicator on the front of the detector lights for a few

seconds when you first turn on the detector.

If the LOW BAT indicator lights during normal use or the detector does not

function properly, replace the batteries. If it still does not function

properly, you might need to reset the detector (see "Resetting the

Detector" in Faxback Doc. # 51691).

Using Headphones

You can connect a pair of stereo headphones (not supplied) to the detector

so you can listen to it privately. Using headphones also saves battery

power and makes it easier to identify subtle changes in the sounds you

hear, for better detection results. Your RadioShack store has a wide

selection of headphones.

To connect headphones to the detector, insert the headphones' 1/4-inch

plug into the HEADPHONE jack on the front panel.

The detector's internal speaker disconnects when you connect headphones.

Listening Safely

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

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

you begin listening, adjust the volume to a comfortable level.

Do not listen at extremely high volume levels. Extended high-volume

listening can lead to permanent hearing loss.

Once you set the volume, do not increase it. Over time, your ears adapt

to the volume level, so a volume level that does not cause discomfort

might still damage your hearing.

Traffic Safety

Do not wear headphones while operating your detector near high-traffic

areas.

Even though some headphones let you hear some outside sounds when

listening at normal volume levels, they still can present a traffic

hazard.

If your detector is not working as it should, follow the suggestions below

to see if you can eliminate the problem. If you cannot, take the detector

to your local RadioShack store for assistance.

PROBLEM SUGGESTION

The detector displays or The sensitivity might be set too high.

sounds false signals. Adjust SENSITIVITY.

You might be sweeping the detector's

searchcoil too fast or at the wrong angle.

Sweep the searchcoil more slowly and hold the

detector correctly. See "Outdoor Testing and

Use" and "Pinpointing a Target" in Faxback

Doc. # 51689.

The detector might sound a false signal if it

detects some types of heavily oxidized

metals. Try pinpointing the target from

several different angles (see "Pinpointing a

Target" in Faxback Doc. # 51689). If the

detector does not display and sound the same

signal each time, the target is probably

heavily oxidized metal.

The display does not show There might be more than one target in the

the correct metal type when area you are searching.

the detector finds a target.

Or, the detector sounds The target might be a type of metal that the

more that one type of tone detector does not recognize.

when it finds a target.

If the target is heavily oxidized, the

detector might not display the correct metal

type. This is not a malfunction.

The sensitivity might be set too high.

Adjust SENSITIVITY.

Displays

The detector's displays are on the front of the control housing. The top

display shows a probable identification of a detected object, and the

bottom display shows the target mode the detector is currently set to

(see" Setting a Target Mode" in Faxback Doc. # 51689).

Top Display Ranges

When the detector detects an object, an arrow appears on the top display

next to the probable type of metal or denomination of the coin being

detected. If the detector receives a strong indication, the arrow appears

steadily. If the indication is weak, the arrow blinks or does not appear.

If an arrow points t a coin denomination, the detector might be detecting

either a coin or another type of metal (such as jewelry, tokens, medals,

or even junk metal) of about the same size and type as the coin.

Since the indications are approximations, the detector might not have

actually found the item it indicates. The indicator is only a visual

reference to help you decide if an item is worth investigating.

The top display is divided into gold and silver ranges.

GOLD Range:

IRON/FOIL - Indicates that the target is probably iron or foil.

Some oxidized iron might register somewhere within the

SILVER range.

5 Cents - Indicates that the target is probably a nickel.

PULL TAB - Indicates that the target is probably a pull tab from an

aluminum can.

Some small gold items might register within the PULL TAB

category.

S-CAPS - Indicates that the target is probably a type of metal like a

bottle cap.

Some medium-size gold items and large aluminum items might

register within the S-CAPS category.

SILVER Range:

1 Cent Zinc - Indicates that the target is probably a zinc penny.

Some large gold items might register within the 1 cent

ZINC category.

1 Cent/10 Cent - Indicates that the target is probably a penny or a dime.

25 Cents - Indicates that the target is probably a quarter.

50 Cents - Indicates that the target is probably a half-dollar.

1 Dollar - Indicates that the target is probably a silver dollar.

Bottom Display Ranges

An arrow appears on the bottom display next to the currently set target

mode (see "Setting a Target Mode" in Faxback Doc. # 51689).

Tones

If the detector is set to the ALL METAL target mode, it sounds a single

tone when it detects any type of metal.

If you set the detector to the DISC, NOTCH, or AUTO NOTCH target modes

(see "Setting a Target Mode" in Faxback Doc. # 51689), its built-in audio

target identification (ATI) system automatically sounds a unique audio

tone for each of three categories of metal. This makes it easier to

identify the type of metal being detected.

The detector sounds a low tone when it detects small gold and nickels, a

medium tone when it detects most pull tabs and some gold and zinc, and a

high tone when it detects copper, silver and brass.

Notes: The detector will not detect most iron and steel objects when set

to the DISC, NOTCH, AUTO NOTCH target modes. However, the

detector might sound a tone and show an indication of the display

if an iron object is highly oxidized. For example, the detector

might sound a high tone and display an indication in the SILVER

range if it detects a rusted bottle cap.

Depending on the alloys used to make them, about 15 percent of

gold rings cause the detector to sound a medium tone instead of a

low tone when it detects them. If this happens, the detector

still displays an indication in the GOLD range on the display.

If the detector is set to the NOTCH target mode, it might not

sound a tone if it detects a pull tab.

If a pull tab is broken in half, the "beaver tail" part of the tab

causes the detector to sound a low tone. The detector also might

sound a low tone if a pull tab is bent, folded or highly oxidized.

630-3012 METAL DETECTOR Faxback Doc. # 44102

To order parts call 1-800-843-7422 or visit your local RadioShack store.

Reference # Cat.No. Description NP Part #

------------------------------------------------------------------------

11885845 DOOR,BATTERY DB90069

11885944 HEADPHONE NUT NO WASHER HW6303012

11885746 JACK,HOUSING J90077

11885753 PLUG,SEARCHCOIL J90078

11885761 JACK,HEADPHONE J90079

11885795 KNOBS,CONTROL K90232

11885696 LCD ASSY L90060

11885720 LOWER STEM MB90008

11885878 MANUAL,USERS XEROX COPY MU6303012

11885852 VOLUME CONTROL,POT P90075

ASSY, SKU # Z90251 SP0000X

11885860 CIRCUIT BOARD XB90226

11885670 HANDLE SYSTEM Z90246

11885738 SEARCHCOIL 8" Z90249

11885829 PANEL ASSY,FRONT Z90250

11885837 BATTERY PAD Z90251


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 RadioShack. The Discovery 3000 is exclusively available at RadioShack stores.

Cat. No. 63-3012 DISCOVERY 3000 Metal Detector OWNER'S MANUAL

©1996 Tandy Corporation

All Rights Reserved

RadioShack is a registered trademark used by Tandy Corporation

Please read before using this equipment.

FEATURES

With your RadioShack Discovery 3000 Metal Detector, you can hunt for coins, relics, jewelry, gold, and silver just about anywhere. The Discovery 3000 is designed to be versatile and easy to use.

Loaded with features, the detector lets you locate and identify all types of metals with pinpoint accuracy. It can distinguish between different types of metals and "tune out" the ones you don't want to search for. The detector's notch setting lets you manually fine-tune it for more accurate discrimination.

The detector's features include:

Liquid Crystal Displays -- show the detector's current search setting and the probable type of metal being detected. A separate display lets you know when it is time to replace the batteries.

Three-Tone Audio Discrimination -- sounds distinctive tones for different types of metals, to make target identification easier.

Notch and Auto Notch Settings -- let you set the detector to distinguish between junk metal and valuable metal, and automatically ignore junk metal while you search.

Ultra Slow Sweep VLF (Very Low Frequency) Discrimination -- effectively distinguishes between different types of metals when the detector is swept at slow speeds.

GROUND TRAC® -- lets you automatically adjust the detector to the mineral content of the ground you are searching. This reduces false alerts and increases the detector's efficiency.

Headphone Jack -- lets you connect headphones (not supplied) to the detector.

Waterproof Design -- lets you use the detector's coil under water, and use the detector in just about any type of weather.

Note: Your metal detector requires two 9-volt alkaline batteries (not included) for operation.

OPTIONAL ACCESSORY

The medium-sized searchcoil supplied with your detector efficiently finds deeply-buried objects, and is ideal for general use. However, if you are looking for tiny objects (coin-sized and smaller) that are not buried too deeply, a 4-inch searchcoil (such as RadioShack Cat. No. 63-3009, not supplied) might work better.

This searchcoil is highly sensitive and offers superior performance when hunting for small objects such as gold nuggets or small pieces of jewelry, or when hunting in mineralized or highly trashy areas. Because of its smaller size, it has a narrower detection field and is less susceptible to interference from junk metal. This makes it better able to isolate precious metals in these areas.

©1996 Tandy Corporation.

All Rights Reserved.

RadioShack is a trademark used by Tandy Corporation.

Ground Trac is a registered trademark used by First Texas Manufacturing.

Assembling the Detector

Installing Batteries

Using Headphones

Listening Safely............................................6

Traffic Safety...............................................6

Understanding the Detector...............................7

Displays.....................................................7

Top Display Ranges.......................................7

Bottom Display Ranges...................................8

Tones.......................................................8

Operation..................................................10

Turning On the Detector.................................10

Setting a Target Mode ...................................10

ALL METAL..............................................10

DISC .......................................................11

NOTCH ...................................................11

AUTO NOTCH ..........................................12

Testing and Using the Detector

Indoor Testing

Outdoor Testing and Use

False Signals

Fine-Tuning the Detector

Adjusting SENSITIVITY

Using GROUND TRAC............................16

Adjusting DISC/NOTCH ..........................16

Pinpointing a Target

Troubleshooting.........................................18

Care and Maintenance..................................19

Resetting the Detector..........................19

Treasure Hunter's Code of Ethics........Back Cover

PREPARATION

ASSEMBLING THE DETECTOR

Assembling your detector is easy and requires no special tools. Follow these steps to assemble the detector.

1. Loosely attach the searchcoil to the lower stem using the supplied bolt and knurled knob. Do not tighten the bolt and knob yet.

2. While pressing and holding down the button on the top of the lower stem, slide the lower stem tube into the upper stem tube.

3. Adjust the stem to a length that lets you comfortably stand upright. The stem should be long enough to let you comfortably hold the detector so the searchcoil is level to the ground and about 1/2 to 2 inches above the ground with your arm relaxed at your side.

4. Wind the searchcoil's cable around the stem. Leave enough slack in the cable to let you adjust the searchcoil when you are hunting on uneven ground.

5. Insert the searchcoil's plug into the matching connector on the detector's control housing. Make sure the pins on the plug align with the holes in the connector.

Cautions:

· The searchcoil's plug fits into the connector only one way. Do not force it.

· To disconnect the searchcoil's cable from the detector, grasp the plug and pull it out of the connector. Never pull on the cable.

6. Adjust the searchcoil to the desired position, then tighten it by turning the bolt and knurled knob in opposite directions until they stop.

Caution: Do not over tighten the searchcoil or use tools such as pliers to tighten it.

INSTALLING BATTERIES

You need two 9-volt alkaline batteries (such as Cat. No. 23-553) to power your detector.

1. If the detector is on, turn POWER/VOLUME on the front panel fully counterclockwise until it clicks to turn it off.

2. While pressing and holding down the release clip on the right side of the battery compartment door, lift open the door.

3. Snap a 9-volt battery onto each battery terminal, then slide the batteries inside the compartment.

Cautions:

· Use only fresh batteries of the required size and type.

· Do not mix old and new batteries, different types of batteries (standard, alkaline, or rechargeable), or rechargeable batteries of different capacities.

4. carefully insert the tabs on the battery compartment door into the slots on the detector, then press the door down until it clicks to close it.

Cautions:

· Never leave dead or weak batteries in the detector. Batteries might leak and damage the detector.

· If you do not plan to use the detector for a week or more, remove the batteries.

· Dispose of batteries properly; do not bury or burn them.

The LOW BAT indicator on the front of the detector lights for a few seconds when you first turn on the detector.

If the LOW BAT indicator lights during normal use or the detector does not function properly, replace the batteries. If it still does not function properly, you might need to reset the detector (see "Resetting the Detector" on Page 19).

USING HEADPHONES

You can connect a pair of stereo headphones (not supplied) to the detector so you can listen to it privately. Using headphones also saves battery power and makes it easier to identify subtle changes in the sounds you hear, for better detection results. Your local RadioShack store has a wide selection of headphones.

To connect headphones to the detector, insert the headphones' 1/4-inch plug into the HEADPHONE jack on the front panel.

Headphone Jack

The detector's internal speaker disconnects when you connect headphones.

Listening Safely

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

· Set the volume to the lowest setting before you begin listening. After you begin listening, adjust the volume to a comfortable level.

· Do not listen at extremely high volume levels. Extended high-volume listening can lead to permanent hearing loss.

· Once you set the volume, do not increase it. Over time, your ears adapt to the volume level, so a volume level that does not cause discomfort might still damage your hearing.

Traffic Safety

Do not wear headphones while operating your detector near high-traffic areas.

Even though some headphones let you hear some outside sounds when listening at normal volume levels, they still can present a traffic hazard.

UNDERSTANDING THE DETECTOR

DISPLAYS

The detector's displays are on the front of the control housing. The top display shows a probable identification of a detected object, and the bottom display shows the target mode the detector is currently set to (see "Setting a Target Mode" on Page 10).

Top Display

If an arrow points to a coin denomination, the detector might be detecting either a coin or another type of metal (such as jewelry, tokens, medals, or even junk metal) of about the same size and type as the coin.

Since the indications are approximations, the detector might not have actually found the item it indicates. The indicator is only a visual reference to help you decide if an item is worth investigating.

The top display is divided into gold and silver ranges.

GOLD Range:

Bottom Display IRON/FOIL -- indicates that the target is probably iron or foil.

Some oxidized iron might register somewhere within the SILVER range.

In this example, the detector is detecting a half-dollar and is set to the NOTCH target mode.

Top Display Ranges

When the detector detects an object, an arrow appears on the top display next to the probable type of metal or denomination of the coin being detected. If the detector receives a strong indication, the arrow appears steadily. If the indication is weak, the arrow blinks or does not appear.

5¢ -- indicates that the target is probably a nickel.

PULL TAB -- indicates that the target is probably a pull tab from an aluminum can.

Some small gold items might register within the PULL TAB category.

S-CAPS -- indicates that the target is probably a type of metal like a bottle cap.

Some medium-size gold items and large aluminum items might register within the S-CAPS category.

SILVER Range:

1 ¢ ZINC -- indicates that the target is probably a zinc penny.

Some large gold items might register within the 1 ¢ ZINC category.

1¢ 10¢ -- indicates that the target is probably a penny or a dime.

25¢ -- indicates that the target is probably a quarter.

50¢ -- indicates that the target is probably a half-dollar.

$1 -- indicates that the target is probably a silver dollar.

Bottom Display Ranges

An arrow appears on the bottom display next to the currently set target mode (see "Setting a Target Mode" on Page 10).

TONES

If the detector is set to the ALL METAL target mode, it sounds a single tone when it detects any type of metal.

If you set the detector to the DISC, NOTCH, or AUTO NOTCH target modes (see "Setting a Target Mode" on Page 10), its built-in audio target identification (ATI) system automatically sounds a unique audio tone for each of three categories of metal. This makes it easier to identify the type of metal being detected.

The detector sounds a low tone when it detects small gold and nickels, a medium tone when it detects most pull tabs and some gold and zinc, and a high tone when it detects copper, silver, and brass.

Notes:

· The detector will not detect most iron and steel objects when set to the DISC, NOTCH, or AUTO NOTCH target modes. However, the detector might sound a tone and show an indication on the display if an iron object is highly oxidized. For example, the detector might sound a high tone and display an indication in the SILVER range if it detects a rusted bottle cap.

· Depending on the alloys used to make them, about 15 percent of gold rings cause the detector to sound a medium tone instead of a low tone when it detects them. If this happens, the detector still displays an indication in the GOLD range on the display.

· If the detector is set to the NOTCH target mode, it might not sound a tone if it detects a pull tab.

· If a pull tab is broken in half, the "beaver tail" part of the tab causes the detector to sound a low tone. The detector also might sound a low tone if a pull tab is bent, folded, or highly oxidized.

OPERATION

TURNING ON THE DETECTOR

· ALL METAL

· DISC (discrimination)

· NOTCH position.

· AUTO (automatic) NOTCH

1. Hold the detector in a comfortable

2 Turn on the detector by turning POWER/VOLUME clockwise until it clicks.

The detector beeps 3 times, arrows point to all options on both displays, and the LOW BAT indicator lights for a few seconds. Then an arrow points to ALL METAL on the bottom display.

Note: Many detector problems are caused by weak, dead, or improperly connected batteries. If the detector does not turn on, has weak volume, will not tune properly, operates erratically, or drifts, check both batteries.

3. Turn POWER/VOLUME to adjust the sound to a comfortable listening level.

SETTING A TARGET MODE

Your detector has four built-in target modes which determine what types of metal your detector will search for and reject.

When the detector is set to a target mode, the top display is blank until the detector detects a specific type of met al. Then the arrow points to that metal size and type.

ALL METAL

When the detector is set to ALL MET AL, it sounds a tone and displays an indicator when it detects any type of metal as long as the metal is under the searchcoil.

The detector automatically sets itself to this target mode when you first turn it on.

The detector is set to maximum sensitivity in the ALL METAL target mode when you press ALL METAL. Adjusting DISC/NOTCH (see "Adjusting DISC/ NOTCH" on Page 16) has no effect in this mode.

To set the detector to the ALL METAL target mode from another mode, press ALL METAL on the front panel. An arrow on the bottom display points to ALL METAL.

When the detector is set to DISC, it sounds a tone and displays an indicator when it detects many types of met al, and ignores the general metal type that you specify by adjusting DISC/ NOTCH (see "Adjusting DISC/ NOTCH" on Page 16).

· This target mode lets you set the detector to ignore a wide category of metal types. If you want to set the detector so it ignores only a specific type of metal, see "Notch" on this page or "Auto Notch" on Page 12.

· The detector does not detect iron in this target mode.

To set the detector to the DISC target mode, press DISC. An arrow on the bottom display points to DISC.

Then adjust DISC/NOTCH to select the type of metal you want the detector to ignore (see "Adjusting DISC/NOTCH" on Page 16).

The following illustration shows the types of metal the detector will ignore as you turn DISC/NOTCH.

(illustration)

NOTCH

Use this target mode to notch (set a narrow range for) the detector's search range so it does not detect specific kinds of items such as aluminum and pull tabs, while still detecting items such as gold or silver.

When the detector is set to NOTCH, it sounds a tone and displays an indicator only when it detects the type of metal you specify and it ignores the types of metal you specify by adjusting DISC/NOTCH (see "Adjusting DISC/ NOTCH" on Page 16).

· This target mode lets you manually set the detector to ignore only a specific type of metal. If you want to set the detector so it automatically ignores specific types of metal, see "Auto Notch."

· The detector does not detect iron and most small foil pieces in this target mode.

Follow these steps to set the detector to the NOTCH target mode.

1. Press NOTCH on the front panel of the detector. An arrow on the bottom display points to NOTCH.

2. Find a sample of the material you want the detector to ignore (such as a pull tab), place the item under the searchcoil, then adjust DISC/NOTCH until it does not detect the material.

3. Find a sample of the material you want the detector to find (such as a nickel or gold ring), place the item under the searchcoil, then make sure the detector detects the material. If the detector does not detect the material, repeat Step 2, as necessary, to adjust the notch.

Note: Some junk metal, such as pull tabs and pieces of pull tabs, have nearly the same characteristics as nickels and some gold rings. If this happens, you might not be able to narrow the detector's notch closely enough to prevent the detector from detecting the pull tabs.

AUTO NOTCH

When the detector is set to AUTO NOTCH, it sounds a low tone and displays an indicator when it detects nickels and small gold objects, and automatically ignores most junk metal items. It sounds a high tone when it detects metals such as copper, silver, and brass.

You can widen or narrow the range of metal types that the detector will detect by adjusting DISC/NOTCH on the front of the detector (see "Adjusting DISC/NOTCH" on Page 16).

Follow these steps to set the detector to the AUTO NOTCH target mode.

1. Press AUTO NOTCH. An arrow on the bottom display points to AUTO NOTCH.

2. Adjust DISC/NOTCH on the front of the detector to widen or narrow the range of metal types that the detector will detect.

TESTING AND USING THE DETECTOR

To learn how the detector reacts to different metals, you should test it before you use it the first time. You can test the detector indoors and outdoors.

Indoor Testing

1. Turn on the detector.

2. Set the target mode.

3. Place the detector on a wooden or plastic table, then remove any watches, rings, or metal jewelry you are wearing.

4. Adjust the searchcoil so the flat part points toward the ceiling.

Note: Never test the detector on a floor inside a building. Most buildings have metal of some kind in the floor, which might interfere with the objects you are testing or mask the signal completely.

5. Move a sample of the material you want the detector to find (such as a gold ring or a coin) near the searchcoil.

If the detector detects the material, it sounds a tone and an arrow appears on the top display next to the type of metal it found.

If the detector does not detect the material, make sure the target mode is set correctly for the type of metal you are searching for (see "Setting a Target Mode" on Page 10), then repeat Step 5.

Notes:

· If you are using a coin, the detector will detect it more easily if you hold it so a flat side is parallel with the flat side of the searchcoil (not the edge).

· If the detector is currently set to the ALL METAL target mode, you do not need to move the item. Simply hold it close to the searchcoil.

Outdoor Testing and Use

1. Turn on the detector.

2. Set the target mode.

3. Find an area on the ground outside where there is no metal.

4. Find a sample of the material you want the detector to find (such as a gold ring or a coin) and place it on the ground. (If you are using valuable metal such as gold to test the detector, mark the area where you placed the item, to help you find it later. Do not place it in tall grass or weeds).

5. While holding the searchcoil level to the ground about 1-2 inches above the surface, slowly move the searchcoil over the area where you placed the sample, sweeping the searchcoil in a side-to-side

Searchcoil Sweeping Hints:

· Never sweep the searchcoil as if it were a pendulum. Raising the searchcoil while sweeping or at the end of a sweep will cause false readings.

· If the detector is currently set to the ALL METAL target mode, you do not need to sweep the searchcoil to detect the material.

· Sweep slowly -- hurrying will cause you to miss targets.

If the detector detects the item, it sounds a tone and an arrow appears on the top display next to the type of metal it found.

If the detector does not detect the material, make sure the target mode is set correctly for the type of metal you are searching for (see "Setting a Target Mode" on Page 10), then repeat Step 5. Also, make sure you are moving the searchcoil correctly.

Notes:

· The detector responds with a strong signal when it detects most valuable metal objects. If a signal does not repeat after you sweep the searchcoil over the target a few times, the target is probably junk metal.

· False signals can be caused by trashy ground, electrical interference, or large irregular pieces of junk metal. False signals are usually broken or non repeatable.

6. If the detector is set to the ALL METAL target mode, press GROUND TRAC on the front of the detector as you search, to adjust the detector to the mineral content of the ground you are searching (see "Using GROUND TRAC" on Page 16).

7. Try finding other metal in the area. When you find a metal item, wait a few seconds after the tone stops before continuing, to allow the detector time to reset.

FALSE SIGNALS

Your detector is extremely sensitive, and will find even deeply-buried metal. Because of this, trash-induced signals and other sources of interference might cause signals that seem confusing. The key to handling these types of signals is to dig for only those targets that emit a strong, repeatable signal. As you sweep the searchcoil back and forth over the ground, learn to recognize the difference between signals that occur at random and signals that are stable and repeatable.

To reduce false signals when searching very trashy ground, scan only a small area at a time using slow, short overlapping sweeps. To help prevent erratic signals and pinpoint targets in trashy areas, try a smaller searchcoil (see "Optional Accessory" on Page 2).

FINE-TUNING THE DETECTOR

After you become familiar with how your detector works, you can fine tune it to make it less sensitive to interference and more selective in what it finds. For example, you can set it so it ignores junk metal such as pull tabs but still registers silver and copper

Adjusting SENSITIVITY

Broadcast antennas and power lines can cause the detector to indicate false signals and operate erratically. Adjust SENSITIVITY on the front of the detector to help reduce or eliminate these false signals.

To adjust the sensitivity, turn SENSITIVITY clockwise to increase it, or counterclockwise to reduce it.

· For maximum detection depth, always leave SENSITIVITY set as high as possible while using the detector.

· If you set the detector's sensitivity too high, the top display might randomly display arrows and the detector might sound false tones.

Using GROUND TRAC

The detector has a GROUND TRAC circuit that adjusts to the mineral content of the ground you are searching. Since the mineral content of ground changes from place to place, frequently press GROUND TRAC on the front of the detector as you search.

Adjusting DISC/NOTCH

Discrimination is the detector's ability to differentiate between types of metal and either find or ignore them. DISC/NOTCH adjusts the detector's discrimination.

If the detector is set to the DISC, NOTCH, or AUTO NOTCH target mode, adjust DISC/NOTCH clockwise toward HIGH to set the detector to ignore items such as bottle caps, zinc pennies, and pull tabs, while still detecting items such as nickels and small gold items.

· The detector automatically sets itself to maximum sensitivity in the ALL METAL target mode. Adjusting DISC/NOTCH has no effect in this mode.

· If you set the detector's discrimination too high, the detector will not detect some gold items.

PINPOINTING A TARGET

Accurately pinpointing a target while detecting makes digging it up easier.

Accurately pinpointing small metal objects takes practice. We suggest that you practice finding and digging up small metal objects on your own property before you search other locations.

Follow these steps to pinpoint a target.

1. When the detector detects a buried target, continue sweeping the searchcoil over the target in a narrowing side-to-side motion.

2. Make a visual note of the exact spot on the ground where the detector beeps.

3. Stop the searchcoil directly over this spot on the ground. Then move the searchcoil straight forward away from you and straight back toward you a couple of times.

4. Make a visual note of the exact spot on the ground where the detector beeps.

5. If necessary, repeat Steps 1-4 to zero in on the exact spot on the ground where the detector beeps.

TROUBLESHOOTING SUGGESTION

If your detector is not working as it should, follow the suggestions below to see if you can eliminate the problem. If you cannot, take the detector to your local RadioShack store for assistance.

The detector displays or sounds false signals.

· The sensitivity might be set too high. Adjust SENSITIVITY.

· You might be sweeping the detector's searchcoil too fast or at the wrong angle. Sweep the searchcoil more slowly and hold the detector correctly. See "Outdoor Testing and Use" on Page 14 and "Pinpointing a Target" on Page 17.

· The detector might sound a false signal if it detects some types of heavily oxidized metals. Try pinpointing the target from several different angles (see "Pinpointing a Target" on Page 17). If the detector does not display and sound the same signal each time, the target is probably heavily oxidized metal.

The display does not show the correct metal type when the detector finds a target. Or, the detector sounds more than one type of tone when it finds a target.

· There might be more than one target in the area you are searching.

· The target might be a type of metal that the detector does not recognize.

· If the target is heavily oxidized, the detector might not display the correct metal type. This is not a malfunction.

· The sensitivity might be set too high. Adjust SENSITIVITY.

CARE AND MAINTENANCE

Your RadioShack Discovery 3000 Metal Detector is an example of superior design and craftsmanship. The following suggestions will help you care for your detector so you can enjoy it for years.

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

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

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

Use only fresh batteries of the required size and type. Old batteries can leak chemicals that damage your detector's electronic parts.

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

Modifying or tampering with the detector's internal components can cause a mal function and might invalidate its warranty. If your detector is not performing as it should, take it to your local RadioShack store for assistance.

The searchcoil supplied with the detector is waterproof and may be submerged in either fresh or salt water. However, do not let water enter the detector's chassis. After using the searchcoil in salt water, rinse it with fresh water to prevent corrosion of the metal parts.

RESETTING THE DETECTOR

If the detector does not work properly after you replace the batteries, or if it stops working and sounds a continuous tone, you might need to reset it.

To reset the detector, turn POWER/VOLUME on and off three or four times.

TREASURE HUNTER'S CODE OF ETHICS

All treasure hunters might be judged by the example you set. Here are a few basic rules you should follow while using your detector.

· Always obtain permission before searching any site.

· Respect the rights and property of others.

· Observe all national, state, and local laws while treasure hunting.

· Never destroy historical or archaeological treasures. If you are not sure about an object you have found, contact a museum or historical society in your area.

· Leave the land and vegetation as it was. Fill in any holes you dig.

· Use your detector only in safe areas.

· Dispose of any junk you find, only in approved areas. Do not leave it for the next treasure hunter to find.

RadioShack Limited Warranty

This product is warranted against defects for 90 days from date of purchase from RadioShack company-owned stores and authorized RadioShack franchisees and dealers. Within this period, we will repair it without charge for parts and labor. Simply bring your RadioShack sales slip as proof of purchase date to any RadioShack store. Warranty does not cover transportation costs. Nor does it cover a product subjected to misuse or accidental damage. EXCEPT AS PROVIDED HEREIN, RadioShack 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 10/95

RadioShack

A Division of Tandy Corporation

Fort Worth, Texas 76102

7/96 Printed in the USA


The Radio Shack Discovery 3000 Field Test Report

by Mickey Maguire

Reprinted by permission from Mickey Maguire

Copyright ®1998 Mickey Maguire

Discovery 3000 Field Test Report

The Discovery 3000 is Radio Shack's top-of-the-line "Professional-Style" metal detector. Made by Bounty Hunter, one of the biggest names in metal detector manufacturing, the 3000 sports many features found on detectors costing twice the price (under $300).

Discovery 3000 features three-tone target I.D. circuitry making treasure hunting more productive. Low tones can be gold, nickels, and other worthwhile targets, high tones ring of silver coins and buttons, and broken middle tones are usually junk.

The 3000 has no-motion, silent, all-metal detection mode and silent discrimination mode, too. If you hate that constant threshold tone whining in your ears, the silent all-metal search mode alone is worth the price of this detector.

In all-metal mode, you can use the automatic ground balance at the touch of a button. Instructions recommend frequent use of the ground balance button to lessen ground interference. Combined with silent search capability and no-motion detection circuitry, this machine makes pinpointing a snap. I frequently find it's more accurate than my Tesoro machines.

In addition to the features mentioned, the 3000 has sensitivity controls, discrimination circuitry, notch-mode, and auto-notch (tuned to block most pull tabs right from the factory). I've used the detector in all modes while testing and auto-notch gets my vote for the most user friendly feature on any detector I've seen.

To keep from drawing a lot of attention to you while you detect, the 3000 has a 1/4 inch headphone jack conveniently located on the front panel.

Volume is adjustable (lower right) to save your eardrums. Discrimination in the upper right is easily set while you're detecting. Sensitivity is in the upper left corner. The 3000 seems to get good depth wherever you set it. The bottom center touch pads are (left to right): all metal silent search, disc mode, notch mode, and auto-notch. The arrow pointer shows which mode you are using. Above is the target I.D. meter. The left side is gold, right is silver, Those hard-to-read signals fall somewhere in between the two.

Compared to other detectors, the Discovery 3000 offers many top-shelf features on a budget price. I've found quarters as deep as

12 inches and nickels at 8 inches. I found a gold ring at 10 inches. My deepest target, to date, was an antique copper spigot. It was

about 5 inches long and was lying 14 inches deep in rich soil. I almost gave up, but, I kept getting this womping signal so I dug a little deeper, then a little more, and a bit more... bingo. Nice find. Sorry I don't have a picture of it to post.

I give this detector a hardy recommendation. Better yet, try a Land Star and you'll get the target depth reading along with all the features you see here.

The End

© 1998 Michael W. Maguire


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