Ricomax GC-1023 User manual

OWNER’S MANUAL MODEL GC-1023
Please read before using this equipment
Metal Detector

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With your GC-1023 metal detector, you can hunt for coins, relics, jewelry,
gold, and silver just about anywhere, including lawns, snows, mountains and
etc. The detector is versatile and easy to use.
MODES
ALL METAL
To search for all kinds of metal object. In this mode, the
unit comes with auto ground balance.
DISCRIMINATION
In this mode, the unit comes with auto ground balance.
This mode can facilitate you to search for and discriminate
the target type based on the different tone for different
metal target.
TONE
Based on DISC/TONE control, the unit can discriminate the
metal type with high or low tone.
PINPOINT
To locate the target accurately.
FEATURES
View Meter
In noisy area, you can search for metal object according to the
indication of view meter.
Headphone Jack
Lets you connect stereo headphones (not supplied) and operate
without trouble.
Waterproof Search
coil
Lets you use the detector even if you must put it under shallow
water.
Adjustable Stem
Lets you adjust the detector’s length for comfortable use.
Arm Support
Lets you carry and operate your detector comfortably.
Power
Your metal detector requires two 9-volt alkaline batteries (not
supplied). The built-in insolating circuit can avoid wrong battery
connection and prolong the battery life.

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ASSEMBLING THE DETECTOR
Assembling your detector is easy and requires no special tools. Just
follow these steps:
1. Insert the latch on the liner into the assembly hole on the bottom of the
control box. Then slightly push the control box in the direction of IN on the
handle to fix the latch in place. Tighten the fixing screw properly.
2. Unscrew the fixing knob on the search coil and remove the knob
connector. Place the washers into the groove of the lower stem. Then insert
the stem and align the holes on the search coil bracket and the stem. Push
the connector through the holes and tighten the knob.

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3. Press the silver 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 you feel
comfortable when you stand upright with the detector in your hand, and the
search coil is level with the ground with your arm relaxed at your side. Then
counter-clockwise rotates to tighten the lock nut.
4. Wind the search coil cable around the stem. Leave enough slack in the
cable. Insert the search coil cable plug into the five pin jack on the front
control box’s housing.
5. Turn the stem’s lock nut clockwise until it loosens. Lengthen or shorten
so when you stand upright with the detector in your hand, the search coil is
level with and about 1/2 to 2 inches above the ground with your arm relaxed
at your side. Turn the stem’s lock nut counter-clockwise to lock it in place.
Caution:
The search coil’s plug fits into the connector only one way. Do not force
the plug or you may damage it.
Do not over tighten the search coil or use tools such as pliers to tighten
it.

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INSTALLING THE BATTERIES
1. Check the power switch on the front panel to make sure it is in the “OFF”
position.
2. Slide the left and right battery covers off in the direction of the arrow.
3. Place two 9V batteries into the battery compartment matching the
polarity symbols (+ and -) marked inside.
Caution:
Use only fresh alkaline batteries of required size.
Do not mix the old and the new batteries or different types of batteries.
Remove the batteries, If you don’t plan to use the unit for a week or
longer. The batteries may leak chemicals that can damage electronic
parts.
Dispose old batteries promptly and properly. Do not bury or burn them.

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USING HEADPHONES
1. Insert the stereo headphones’3.5mm plug into the PHONE jack. The
internal speaker disconnects at this time.
2. Set the volume to desired level. (This unit does not have volume control,
so we suggest to use the stereo headphone with volume control. )
Caution:
To protect your hearing, set the volume to the lowest setting before you
begin listening, and adjust the volume to a comfortable level.
Do not wear headphones while operating your detector near high-traffic
areas. Pay attention to traffic safety.
OVERVIEW THE CONTROL BOX

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1. SENS--- sensitivity control and also used as power switch.
Fully counter-clockwise rotate the switch to OFF to turn off the power.
Rotate it clockwise away from OFF to turn on the power. When you rotate the
SENS from 0 to 10, the sensitivity is gradually increased. 0 is the lowest
position for SENS; while 10 is the highest position. In general case, user can
set the SENS to a high position. But in mineralized area, or area with electrical
interference, it’s better to lower the SENS properly.
2. MODE SWITCH
DISC--- in this mode, the unit comes with auto ground balance. The
mode DISC/TONE can facilitate you to search for and discriminate the target
type based on the long or short tone for different metal target.
ALL METAL----to search for all kinds of metal object. In this mode, the
unit comes with auto ground balance, but without discrimination ability.
TONE---works with DISC/TONE. Discriminates different metal types with
two different tones (high or low).
3. PINPOINT--to pinpoint the target. Press this button to lower the
sensitivity automatically and to locate the target.
4. LOW BAT---after long time of operation, the battery voltage will become
low. When LOW BAT indicator lights, user has to replace the battery.
5. PHONE-- Insert the stereo headphones’3.5mm plug into the PHONE jack.
At this time the internal speaker is disconnected.
6. DISC/TONE-- DISC—discrimination control. You can rotate the control
clockwise from 0 to 10 to discriminate the different metal type. DISC will
discriminate the metal type with different tones, such as long tone, short
tone or without tone. But in TONE mode, unit will discriminate the metal type
with high or low tones.

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7. VIEW METER—when the metal target is found, the meter pointer will
swings to the right.
OPERATION
Your GC-1023 has four operation modes: DISC,TONE ,ALL METAL and
PINPOINT. DISC, TONE and ALL METAL are motion modes. You have to move
the coil to search for target. While PINPOINT is a non-motion mode.
When searching, generally set operation mode to ALL METAL and SENS
to less 10. Sweep your search coil right and left in an arc line. For not missing
any target, it is better to keep the distance from search coil to the ground
about 0.5–2 inches (closer to the earth for smaller target) and the distance
between two neighboring arcs is about 4-6 inches.
If there is a sound during sweeping, it indicates that there is a metal
target in the sound area. In this case, you can use PINPOINT to locate the
target. Then use DISC or TONE modes to determine whether the target is
worth digging out. The followings are the four operation modes in detail.
1. ALL METAL-- a general searching mode. In this mode, the unit will respond
with a “di-di”tone to all metal. But in this mode, unit can’t discriminate metal
type.
2. PINPOINT—in ALL METAL mode, when you find metal object, you can
press PINPOINT to find the target. Hold the search coil 50cm or more away
from the ground. Press and hold down the PINPOINT button. Sweep the
search coil over the sound area and release the button when you hear a
sound of “di”. After about 1~2 seconds, hold down the red button again, the
“di”sound disappears. Closer the search coil to the ground and you’ll hear the
sound again. Repeat the above steps until you find the target. After you find
the target, set mode to DISC or TONE to determine which kind of metal the
target is.

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3. DISC—in this mode, unit discriminates the metal type with different
tones, say high or silence. Set the DISC mode switch to “0”. Slowly rotate the
control clockwise to high position to reject objects you don’t want. At
different DISC position, unit can reject different undesired objects.
When DISC/TONE is set to 0, unit will respond to any metal object with a
high tone; As the control is rotated clockwise, the unit will be silent to ferrous
metal objects. This means the ferrous metal is rejected. Further rotate the
control clockwise. Nickel, zinc, and copper will be rejected. When the control
is set to 10 position, most metal objects are rejected, except silver. At 10
position, unit will still sound high tone for silver.
4. TONE—in this mode, unit discriminates different metal objects with high
or low tone. For object to be rejected, it sounds a low tone which is different
from in DISC mode. When DISC/TONE is set to 0, it sounds a high tone to any
metal. But as it is rotated to high position, it sounds a low tone to ferrous
metal, nickel, zinc, or copper. But it still sounds a high tone to silver.
Caution:
To have a better identification, users should practice more.
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. We suggest that you practice finding sample on your own property
before you search other location.

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Indoor Testing and Use
1. Rotate SENS control clockwise away from OFF to turn on the detector.
2. Rotate SENS control further clockwise to adjust the level of sensitivity.
Normally you can sent the control to about 3:00pm. Reduce sensitivity in case
of interference.
3. Set DISC/TONE to “0”to detect all kinds of metal.
4. Set mode toggle to ALL METAL.
5. Place the detector on a wooden or plastic table, then remove any watches,
rings, or metal jewelry you are wearing.
6. Adjust the search coil so the flat part points towards the ceiling.
7.Slowly sweep a sample of the material you want the detector to find (such
as a gold ring or a coin) 2-3 inches or more above the face of the search coil.
When the detector detects any metal, it sounds a tone and meter point
moves to right.
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’re testing or mask the signal completely.
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 search coil. A sweep
with the side of coin over search coil might cause false indication and
unstable display of arrow.