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63-3007 Discovery 2000
Seems identical to the Lone Star. It is also similar to the BH Quick Draw II or Pioneer 202, except without Depth readout.
Ah, the old favorite BH Quick Draw II and it's close cousin, the Discovery 2000 featured here and including the several variants sold by other chain-store outlets.
An easy work-around for the lack of depth readout, that is possibly more effective, is to simply raise the coil while scanning. If you can raise the coil six inches and still detect the target, it's either near the surface or very large! If the target sounds only with the coil scrubbing the ground, it's either small or deep. The Quick Draw II circuit does almost the same thing, only automatically, via the depth readout. While it's perhaps a useful addition, the indication is subject to interpretation, so not having depth readout is not really that big of a drawback.
Scroll down or click here for an OCR text scan of the original manual
Lonestar Manual pdf 600k
Discovery 2000 Pro Metal Detector
(630-3007) Specifications Faxback Doc. # 34993
Operating Frequency:..............................................6.6 kHz
Assembling your Discovery 2000 Metal Detector is easy and requires no
special tools. Just follow these steps:
1. Using the supplied bolt and nut with knobs, attach the searchcoil to
the lower stem.
2. Press the button on the upper end of the lower stem and slide the lower
stem into the upper stem.
Adjust the stem to a length that lets you maintain a comfortable upright
posture, with your arm relaxed at your side and the searchcoil level to the
ground and about 1/2 to 2 inches above the ground.
3. Wind the searchcoil cable around the stem. Leave enough slack in the
cable to let you adjust the coil when you are hunting on uneven ground.
Then tighten the knob at the end of the searchcoil.
NOTE: To adjust the coil, simply loosen the knob.
4. Insert the coil's plug into the matching connector on the control
housing. Be sure the holes and pins line up correctly.
Do not force the plug or you might damage it.
To disconnect the cable, pull out the plug. Do not pull on the cable.
Your Discovery 2000 Metal Detector is an example of superior design and
craftsmanship. 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
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.
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.
The coil is waterproof and may be submerged in either fresh or saltwater.
Be careful to prevent water from entering the chassis. After using the
coil in saltwater, rinse it with fresh water to prevent corrosion of the
Modifying or tampering with the detector's internal components can cause a
malfunction and might invalidate your detector's warranty. If your
detector is not performing as it should, take it to your local
RadioShack store for assistance.
TREASURE HUNTER'S CODE OF ETHICS
1. Respect the rights and property of others.
2. Observe all laws, whether national, state or local.
3. Never destroy historical or archaeological treasures.
4. Leave the land & vegetation as it was. Fill in the holes.
5. All treasure hunters may be judged by the example you set. Always
obtain permission before searching any site. Be extremely careful with
your probing, picking up and discarding of trash, and ALWAYS COVER YOUR
Your RadioShack Discovery 2000 is designed for versatility in all areas of
treasure hunting. Coin-shooting, relic hunting, and gold nugget shooting
are some of the many ways your detector can be utilized.
Metal Detecting can be a lifelong pursuits available to all ages. The
hobby is completely dependent on the type of equipment being used and the
operator's expertise. With the electronically advanced Discovery 2000
metal detector and diligent practice you will achieve a level of expertise
making the hobby of metal detecting very rewarding. The first step towards
this goal is to carefully read this manual before attempting to operate
your new Discovery 2000 metal detector.
The Discovery 2000's features include:
Dual LCD Display - displays the probable type of metal
being detected and the mode of
Ultra Slow Sweep
VLF Discrimination - distinguishes between different metals
efficiently, even when the detector is
swung at slow speed.
Three Tone Audio Discrimination - sounds distinctive tones for different
categories of metal objects to make
target identification easier.
THREE MODES OF OPERATION
1. All Metal: detects all types of metal without discrimination.
2. Disc: lets you distinguish between junk and valuable metal objects
while rejecting most junk targets.
3. Auto Notch: automatically rejects most junk targets while retaining
nickels and small gold items.
The best coil to use depends on where and what you will be targeting when
you are in the field. If you are looking for deeply-buried objects, a
medium-sized coil, such as the standard coil that came with your detector,
is more efficient. If you are looking for tiny objects and coin-sized
objects that are not buried too deeply, a 4-inch coil might work better.
The Discovery 4-Inch Coil System (RadioShack Cat. No. 63-3009) is highly
sensitive and offers superior performance when hunting for small objects
(such as gold nuggets or small pieces of jewelry), or in mineralized or
highly trashed areas.
Because of its smaller size, the 4-Inch Coil has a narrower detection field
and is less susceptible to interference from trash items. This makes it
better able to isolate precious metals in trashy areas.
IMPORTANT: Your Discovery 2000 metal detector requires two 9-volt ALKALINE
batteries, such as RadioShack Cat. No. 23-553.
Follow these steps to install the batteries.
1. Carefully remove battery compartment door by pressing release clip at
right side of door.
2. Snap one battery onto each of the terminals, and place the batteries
inside the compartment.
3. Replace the compartment door by carefully inserting opposite side of
clip first. Then press carefully down on clip side until battery door
snaps in place.
CAUTION: Only use fresh batteries of the required size and type.
The low battery indicator, along with all other arrow indicators,
lights briefly when you turn on power, so you know the detector is
working properly and the batteries are good.
If the low battery indicator stays on continuously, replace the
Many metal detector problems are caused by weak, dead, or improperly
connected batteries. If the detector does not come on, has weak
volume, will not tune properly, has erratic operation, or drifts,
replace the batteries.
You can extend battery life by using headphones. A headphone jack is
provided and can be used with any 1/4-inch stereo-type headset.
Remove the batteries if you do not plan to use the detector for a week
RESETTING THE DETECTOR
The detector might "lock up" and sound a continuous tone if you have low
battery voltage or are testing the detector with the searchcoil near a
large metal object.
Check and replace the batteries if necessary.
Move to a different testing location.
Reset the detector by turning it off and on repetitively.
Now that your metal detector is assembled, it's time to learn how to use
it. Please read this section thoroughly before you use your Discovery
TURNING ON YOUR DETECTOR
Hold the detector in a comfortable position and turn it on by rotating the
combination POWER/SENSITIVITY clockwise about 3/4's of a turn. The
detector sounds three beeps, LCD arrow momentarily appear and unit presets
to the ALL METAL mode of operation. If not, check that the batteries are
properly connected and make sure they are not low.
SETTING THE MODE
Your Discovery 2000 has three modes of operation: ALL METAL, DISC, and
1. All Metal: By pressing the ALL METAL touchpad or when first turning
the unit on, the unit will then respond to all types of metal without
any discrimination. As in the DISC and NOTCH modes, the detector will
also require motion to detect a target in the ALL METAL mode.
2. Disc: By pressing the DISC touchpad, the detector will automatically
reject iron and can then be adjusted by the DISC/NOTCH control for
increased discrimination. By turning the DISC/NOTCH control clockwise
the detector will eliminate most trash items such as foil and aluminum
while still detecting silver and copper - depending on how high it is
set. Most gold and nickels will also be eliminated when tuning the
DISC/NOTCH control clockwise for higher discrimination. When the
DISC/NOTCH control is placed fully counterclockwise (Low), the detector
will pick up all nickels and gold rings along with pull tabs and
copper/silver coins, but still reject iron.
3. Auto Notch: This mode will automatically reject iron and most pulltabs
yet retain detection of nickels and most small gold rings. The
DISC/NOTCH control will increase the width of the NOTCH as it is turned
towards HIGH, making possible the rejection of screw caps and zinc
pennies, yet still detecting Nickels and many gold rings.
NOTE: Some gold rings will not be detected in this mode of operation.
A percentage of pull-tabs will still be detected especially
pull-tabs that are broken in half in the shape of a "beaver
READING THE DISPLAY
The LCD displays are located at the center of the control housing. The
displays show a probable identification of the object (on the target ID
readout), as well as the mode of operation being used (on the target mode
The LCD target display will give a visual readout of the probable type of
metal being targeted and what denomination of coins are detected. The LCD
target display will usually lock on when a target is being detected and not
lock on when the unit "falses" or an object is borderline discriminated.
The target ID readout displays various coins and metal objects, and a range
from GOLD to SILVER. When the detector senses a target, an arrow will
indicate the probable target being detected.
NOTE: When the arrow points to coin, the detector could be sensing either
a coin or another type of metal (such as jewelry, tokens, medals, or
even junk metal).
GOLD/SILVER range: Indicated on the top of the readout. The gold spectrum
is to the left of the meter and the silver spectrum is to the right. Other
types of metal fall under both spectrums such as iron, foil, and nickel
under the gold spectrum and copper pennies under the silver spectrum.
1 CENT ZINC: Indicates that the target probably is a zinc penny. Will
usually emit a medium tone when targeted. Other targets, such as large
gold, will also fall into this category.
SCREW CAPS: Indicates that the target probably is a Screw Cap or other
types of metal such as bottle caps. Medium size gold will also fall into
this range, as well as large aluminum items.
PULL TAB: Indicates that the target is probably a pull-tab. Some small
gold will also read as pul-tab.
IRON/FOIL: Indicates that the target is probably iron or foil. Some
rusted oxidized iron will occasionally register in the silver range.
NOTE: All of the target indications are used as symbols and a visual
reference of what is being targeted. Many other types of metal
can fall under any one of these indications. There is always a
trash to treasure ratio when detecting; the LCD allows a visual
reference to minimize the trash only - it will not completely
eliminate all trash items.
LOW BAT INDICATOR: Will blink when turning the unit on to indicate that it
is working. If the indicator comes on and stays on, the batteries need
TARGET MODE: Each arrow will lock on and stay on whatever choice of mode
the user has selected. Each mode of operation can be set by choosing one
of the three Touchpads on the control panel after the unit is turned on.
THREE TONE AUDIO TARGET IDENTIFICATION (ATI)
When the Discovery 2000 is in the DISC or NOTCH modes, its Audio Target
Identification (ATI) system automatically classifies metal objects into
three categories, to make it easier to identify the type of target being
The detector sounds three different tones to distinguish between categories
of detected items: a low tone for small gold and nickel; a medium tone for
most old and new pull-tabs and some gold; and a high tone for copper,
silver, and brass.
IRON & STEEL: In the DISC or NOTCH modes, most iron and steel objects
usually will not be detected. On occasion, if the iron is highly oxidized,
a tone may be emitted. For instance, some rusted bottle caps will emit a
high tone and indicate on the LCD readout in the SILVER range.
GOLD & NICKEL: All nickels and many gold items will emit a low tone.
There is a percentage of gold rings, around 15%, that emit a medium tone,
but the LCD will still read under the gold spectrum.
OLD & NEW PULL TABS: These will usually emit a medium tone or no tone at
all if in the Notch mode. If a pull-tab is broken in half, the "Beaver
Tail" part will emit a low tone. There are also pull-tabs that are bent
and folded or highly oxidized that may emit a low tone.
COPPER, SILVER & BRASS: These metals usually will all emit a high tone in
the DISC or NOTCH modes.
NOTE: When operating in the ALL METAL mode, Three Tone Audio Target
Identification shuts down and only one medium tone is emitted
for all types of targets.
TESTING YOUR DETECTOR
1. While testing the unit for it capability to pick up coins and other
objects, always test away from other metals - a good start is outside
on the ground. You cannot test a unit indoors on the floor, because
there is usually other metal in the floor that may conflict with the
detector's signal or even mask the signal completely.
2. If you're not picking up coins or metal, even though your coil is close
to the objects to be detected, there is a chance that you are not
maneuvering the coil properly. Do not move the coil too quickly and
try not to sweep the coil less than an inch away from the object.
3. No matter what mode of operation you've chosen (ALL METAL, DISC, or
NOTCH), your coil needs to be in movement before the unit will
recognize a target. If you're air testing, you need to point the coil
to the ceiling and make sure there is no metal near the coil
whatsoever. The object your testing with needs to be swung in a
side-to-side motion before the detector will be able to recognize it.
4. Not all gold rings will give you a low tone. Some gold rings fall in
the pull-tab range and may emit a medium tone similar to the pull tab.
Some pull-tabs, especially if they are broken in half, will give you a
low tone similar to most gold rings and nickels.
5. Zinc pennies will emit a medium tone instead of a high tone as do
copper pennies, quarters, and dimes.
6. Do not swing the coil, or the test object, too quickly or it may give
you a false signal. When repetitively passing the coil over the
object, allow a few seconds to pass to give the detector a chance to
recover from its last reading.
Once you become familiar with how your metal 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 make it tune out undesirable objects
and tune in precious metals, such as having it eliminate most pull-tabs
while detecting silver/copper coins.
Use SENSITIVITY to adjust the detector's sensitivity to conditions that can
cause it to respond erratically. For example, broadcasting antennas and
power lines can cause false signals.
Be careful to not operate the SENSITIVITY so high that the Target Readout
becomes so erratic and false tones start emitting. Rotate SENSITIVITY
clockwise to increase, or counterclockwise to decrease the detector's
sensitivity. To determine how high to adjust the SENSITIVITY, turn the
SENSITIVITY clockwise while listening for false signals; if the unit starts
to chatter, emitting false signals, reduce the SENSITIVITY slightly until
the chatter stops. For maximum depth of detection, always set SENSITIVITY
as high as possible.
Only applies when unit is not operating in the ALL METAL mode. The
DISC/NOTCH control adjusts for different levels of discrimination. When
operating in the DISC mode, the level of discrimination is increased by
turning the control clockwise from the LOW position. NOTE: Gold items
will also be eliminated as the control is turned clockwise. When operating
in the AUTO NOTCH mode, the DISC/NOTCH control turned clockwise from LOW
will eliminate items that fall in the range of screw caps and zinc pennies,
in addition to most pull-tabs, yet retain nickels and most small gold
ALL METAL MODE
When first turning the unit on, the detector presets to the ALL METAL mode.
The DISC/NOTCH control will not affect operation in this mode. By pressing
the ALL METAL touchpad, the unit will return to ALL METAL from any other
mode. The detector will still require motion to detect a target in this
mode of operation.
To change operation mode to DISC, simply press the touchpad labeled DISC.
The mode indicator (arrow) should now have an arrow pointing down to the
DISC position. The DISC/NOTCH control knob now functions as a standard
variable discriminator. As you rotate the DISC/NOTCH clockwise from the
LOW position, it rejects iron, foil, nickels (many gold items), pull-tabs,
and screw caps (in that order).
AUTO NOTCH MODE
The purpose of the AUTO NOTCH is to provide automatic discrimination of
most trash items without the loss of nickels and most small gold objects.
By pressing the AUTO NOTCH touchpad, the mode indicator (arrow) will point
down to the AUTO NOTCH position. In this mode, the detector emits a low
tone (for most small gold and nickels) and a high tone for copper, silver,
The DISC/NOTCH control now expands the discrimination level; for instance,
zinc pennies and screw caps can also be eliminated by turning the control
clockwise - yet, nickels and small gold will be retained.
Expect some targets to be junk items, even if the detector emits a tone.
Besides nickels, other items that might emit a low tone include foil, some
pull-tabs, and small gold rings. Besides copper and silver, other items
that might emit a high tone include brass and other metals.
IN THE FIELD TECHNIQUES
Accurate pinpointing takes practice and is best accomplished by "X-ing" the
suspected target area.
1. Once a buried target is indicated by a good tone response continue
sweeping the coil over the target in a narrowing side-to-side pattern.
2. Take visual note of the place on the ground where the "beep" happens as
the coil is slowly moved side-to-side.
3. Stop the coil directly over this spot on the ground.
4. Now move the coil straight forward and straight back towards you a
couple of times.
5. Again make visual note of the spot on the ground at which the "beep"
6. If needed "X" the target at different angles to "zero in" on the exact
spot on the ground at which the "beep" happens.
When swinging the coil, be careful to keep it level with the ground about
one to two inches from the surface. Never swing the coil as if it was a
After selecting your choice of mode for operation, swing the searchcoil
gently side-to-side, slightly overlapping each sweep as you move forward.
Make sure you keep your searchcoil approximately 1" above ground as you
search. Raising it in the sweep or at the ends of your sweep will cause
false readings. Move slowly, hurrying will only cause you to miss targets.
Most good objects will respond with a good repeatable signal. If a signal
does not repeat after swinging the coil directly over the suspected target
a few times, it is more than likely trash metal. When in the DISC mode,
iron and steel objects generally do not respond. False signals can be
caused by trashy ground, electrical interference, or by large irregular
trash objects. These signals are easily recognized by their often broken
or nonrepeatable nature.
The Discovery 2000 is a very sensitive and deep-seeking detector. It will
loudly respond to many targets that other detectors would only emit a weak
signal for. Because of this, trash-induced signals and other sources of
interference may emit signals that seem confusing. The main key to
handling these types of false signaling is to dig 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 the
signals that occur at random and signals that are stable and repeatable.
When searching very trashy ground, it is best to scan small areas with
slow, short overlapping sweeps. To prevent erratic signals and difficult
pinpointing in trashy areas, consider purchasing the Discovery 4-Inch Coil
System (RadioShack Cat. No. 63-3009).
The following troubleshooting steps may assist you in case you're having
problems with your Discovery 2000.
YOUR DETECTOR IS EMITTING FALSE SIGNALS WHEN YOU'RE IN THE FIELD
Your SENSITIVITY may be set too high. Try cutting back the SENSITIVITY
slightly until the false signaling disappears. Remember, to swing your
coil slowly. Some false signals will occur on highly rusted metals, but if
the signals does not repeat over the same area while passing the coil over
it, then the target is usually not worthwhile.
YOUR LCD READOUT IS NOT LOCKING IN OR ID'ING WHILE PASSING OVER A TARGET &
THERE IS MORE THAN ONE TONE BEING EMITTED BY THE DETECTOR OVER THE SAME
This will usually occur when there is more than one object over the area
you're sweeping. If it is an odd piece of metal that the detector cannot
recognize, the meter will also not lock in. Sometimes, oxidation can also
make the meter ID arrows and tones jump around. This may also occur if the
SENSITIVITY is set too high.
YOUR DETECTOR IS NOT STABLE AND HAS A PULSING, DISTORTED TONE INSTEAD OF A
This can occur if you're operating near another detector or near power
lines that can interfere with the frequency that the detector operates on.
YOUR DETECTOR IS EMITTING A CONSTANT LOUD TONE OR CONSTANT REPEATING TONES
This usually occurs when the batteries are low. Try replacing your
batteries with two new alkalines to determine if this is the cause.
Using headphones (not supplied) with your metal detector makes it easier to
identify subtle changes in the threshold levels for better detection
results, and also reduces drain on the batteries.
The Discovery 2000 Metal Detector has a stereo headphone jack. For the
best sound, use stereo headphones (such as Cat. No. 33-1029 or 33-1125).
To connect headphones, insert the headphones' 1/4-inch plug into the
headphone jack on the front panel.
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.
Do not wear headphones while operating your detector in traffic areas.
This can create a traffic hazard and is illegal in some areas.
Even though some headphones are designed to let you hear some outside
sounds when listening at normal volume levels, they still present a traffic
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 2000 is exclusively available at RadioShack stores.
Cat. No. 63-3007 DISCOVERY 2000 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.
With your RadioShack Discovery 2000 Metal Detector, you can hunt for coins, relics, jewelry, gold, and silver just about anywhere. The Discovery 2000 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 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 cation easier.
Auto Notch Setting -- lets you set the detector to 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.
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.
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 Unlimited No. 10484954, 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.
Understanding the Detector..........................7
Top Display Ranges.................................7
Bottom Display Ranges.............................8
Turning On the Detector.............................9
Setting a Target Mode ...............................9
AUTO NOTCH .....................................11
Testing and Using the Detector ....................11
Outdoor Testing and Use ..........................12
False Signals ........................................13
Fine-Tuning the Detector...........................13
Pinpointing a Target.................................14
Care and Maintenance...............................16
Resetting the Detector...............................16
Treasure Hunter's Code of Ethics .................17
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 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.
· 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.
You need two 9-volt alkaline batteries (such as Cat. No. 23-553) to power your detector.
1. If the detector is on, turn SENSITIVITY 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 bat- The LOW BAT indicator on the front of batteries inside the compartment.
· 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.
· 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 1 7).
You can connect a pair of stereo head phones (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.
Note: You cannot adjust the headphone's volume.
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.
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
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 9).
In this example, the detector is detecting a bottle cap and is set to the ALL METAL 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 detect ed. 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 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) 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.
IRON FOIL -- indicates that the target is probably iron or foil.
Some oxidized iron might register somewhere within the SILVER range.
NICKEL -- 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.
SCREW 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 SCREW CAPS category.
1¢ ZINC -- indicates that the target is probably a zinc penny.
Some large gold items might register within the 1¢ ZINC category.
1¢ 10¢ 25¢ 50¢ -- indicates that the target is probably a penny, dime, quarter, or half-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 9).
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 or AUTO NOTCH target modes (see "Setting a Target Mode" on Page 9), 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.
· The detector will not detect most iron and steel objects when set to the DISC 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 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.
TURNING ON THE DETECTOR
1. Hold the detector in a comfortable position.
· ALL METAL
· DISC (discrimination)
· AUTO (automatic) NOTCH
2. Turn on the detector by turning SENSITIVITY clockwise until it
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.
SETTING A TARGET MODE
Your detector has three 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.
When the detector is set to ALL MET AL, it beeps and displays an indicator when it detects any type of metal as long as the metal is under the search coil and the searchcoil is moving. You must sweep the searchcoil over the metal for the detector to detect it.
The detector automatically sets itself to this target mode when you first turn it on. Adjusting DISC/NOTCH (see "Adjusting DlSC/NOTCH" on Page 14) has no effect in this mode.
To set the detector to the ALL METAL target mode from another mode, raise the searchcoil about 1 foot then press ALL METAL on the front panel. An arrow on the bottom display points to ALL METAL. Then adjust SENSITIVITY (see "Adjusting Sensitivity" on Page 13).
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 14).
· 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 "Auto Notch" on Page 11.
· The detector does not detect iron in this target mode.
To set the detector to the DISC target mode, raise the searchcoil abut 1 foot then 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 14).
The following illustration shows the types of metal the detector will ignore as you turn DISC/NOTCH.
When the detector is set to AUTO NOTCH, it sounds a low tone and displays an indicator when it detects nick els 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 14).
Follow these steps to set the detector to the AUTO NOTCH target mode.
1. Raise the searchcoil about 1 foot then 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 'j 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.
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. Slowly sweep a sample of the material you want the detector to find (such as a gold ring or a coin) 1-2 inches or more above the face of 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 9), then repeat Step 5.
Note: 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).
Outdoor Testing and Use
1. Turn on the detector.
2. Set the target mode.
3. Find an area on the ground out side 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 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.
· 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 item, make sure the target mode is set correctly for the type of metal you are searching for (see "Setting a Target Mode" on Page 9), then repeat Step 5. Also, make sure you are moving the searchcoil correctly.
· 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. 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.
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 coins.
Broadcast antennas and power lines can cause the detector to indicate false signals and operate erratically. Adjust SENSITIVITY on the front of the detector in any target mode, to help reduce or eliminate these false signals.
To adjust the sensitivity, turn SENSITIVITY clockwise to increase it, or counterclockwise to reduce it.
· SENSITIVITY also turns the detector on and off.
· 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.
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 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.
· Adjusting DISC/NOTCH has no effect in the ALL METAL target 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.
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 12 and "Pinpointing a Target" on Page 14.
· 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 14). 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 2000 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 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 working properly.
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 SENSITIVITY 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.
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