Radio Shack Detector Owner's Manual download pdf (Page 5)

* When specifically hunting for gold items, dig for items that sound

both medium and low tones.

† Usually, old or new pull-tabs emit a low tone, or no tone at all (if in

the

NOTCH

mode). If a pull-tab is broken, bent, folded in half, or oxi-

dized, it may emit a low tone.

‡ If the iron target item is highly oxidized, it may sound a high tone and

read in the

SILVER RANGE

on the

PROBABLE TARGET ID

. In

NOTCH

and

AUTO-NOTCH

modes, the metal detector usually does not detect

iron, unless oxidized, then it sounds a high tone.

SETTING THE CONTROLS

Adjusting SENSITIVITY

Use

SENSITIVITY

to filter out terrain conditions that can cause false

signals, such as around broadcasting antennas and power lines, for

example. For maximum depth of detection, always set

SENSITIVITY

high as possible, but not so high that the target readout becomes er-

ratic and false tones sound.

Rotate

SENSITIVITY

clockwise to

increase

, or counterclockwise to

de-

crease

the detector’s sensitivity.

To determine how high to adjust

SENSITIVITY

, rotate

SENSITIVITY

clockwise while listening for false signals; if the metal detector starts to

chatter (emit false signals), reduce

SENSITIVITY

slightly until the chat-

ter stops.

Adjusting DISC/NOTCH

DISC/NOTCH

adjusts the metal detector for different levels of discrimi-

nation.

In the

DISC

mode

, increase the level of discrimination by turning the

control clockwise (away from)

LOW

Note:

DISC/NOTCH

is set higher, some gold items do not sound.

In the

NOTCH

mode

DISC/NOTCH

establishes a reject window. Items

falling within this window will not be detected.

In the

NOTCH

mode, the width of the rejection window is fixed.

Adjust

DISC/NOTCH

to move the threshold window to different object

settings while retaining the fixed window width.

Adjusting GROUND BALANCE

When searching in the

ALL METAL

mode, it is important that the detec-

tor be ground balanced to offset the effects of any minerals present in

the soil or to balance the effects of saltwater when you search near the

ocean.

1. To ground balance the metal detector for a particular area, rotate

GROUND BALANCE

all the way clockwise to

PRESET

2. Lift the search coil about waist high in the air.

3. Press

GROUND TRAC

. (To allow the unit to stabilize, press

GROUND TRAC

two or three times when first ground balancing.)

4. Lower the search coil to about 1 inch above the ground. If the

metal detector does not sound a tone, then the

PRESET

position is

the proper ground balance for that area.

5. If a tone sounds, lift the search coil about waist high in the air

again and rotate

GROUND BALANCE

slightly counterclockwise

(toward

HIGH

), then press

GROUND TRAC

6. Lower the search coil to about 1 inch above the ground. If the

metal detector does not sound a tone, then the setting is correct. If

a tone sounds, repeat Steps 5–6 until no tone sounds.

Note:

Always make sure that there is no metal on top of or under the

ground where you will be ground balancing, otherwise you will not be

able to determine if the tone being emitted is caused by mineralization

or metal. If you think you might be over metal, move to another spot

and proceed.

Important:

When adjusting

GROUND BALANCE

counterclockwise, be

careful to turn it in small increments to ensure that you achieve the op-

timum threshold level. If you feel you have turned the knob too far

counterclockwise, you can turn it clockwise using the same ground

balancing procedure until a tone sounds, then rotate it back counter-

clockwise slightly until a tone no longer sounds.

Saltwater Balancing

Use the same steps as “Adjusting GROUND BALANCE” to balance

the effects of saltwater. Set

GROUND BALANCE

higher to balance out

saltwater effects.

GROUND BALANCE

is moved or reset, press

GROUND TRAC

FIELD TECHNIQUES

Pinpointing a Target

Accurately pinpointing a target makes digging it up easier. Accurate

pinpointing takes practice, and we suggest you practice finding and

digging up small metal objects on your own property before you search

other locations.

Sometimes, targets are difficult to accurately locate due to the sweep

direction. Try changing your sweep direction to pinpoint a target.

1. When the metal detector detects a buried target and sounds a

tone, continue sweeping the search coil over the target in a nar-

rowing side-to-side motion.

As you slowly move the search coil side-to-side, make a visual

note of the exact spot on the ground where the metal detector

beeps.

2. Stop the search coil directly over that spot on the ground.

3. Move the search coil straight forward away from you and straight

back toward you a few times.

Again, make a visual note of the spot on the ground at which the

beep sounds.

4. Repeat Steps 1 and 2 at a right angle to the original search line,

making an

-pattern. The target should be directly below the cen-

ter of the

, at the point of the loudest response.

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Radio Shack Detector Owner's Manual Page 5

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