Detech EDS REACHER User manual

ASSEMBLING YOUR DETECTOR
1. On the lower rod assembly, remove the mounting screw and thumb nut
from the rod tip.
2. Insert the rod tip between the mounting ears of the search coil and align
the holes of the rod tip and washers with those of the mounting ears.
3. Insert the mounting screw through the holes in the mounting ears and rod
tip.
4. Install the thumb nut on the mounting screw and tighten by hand.
Note: Tighten the thumb nut after you have assembled the whole handling
and adjusted the search coil in working position toward the ground.
5. Slide the lower rod into the middle rod until the snap button clicks into the
first adjustment hole.
Note: The tightening of the locking ring should be done after you have
assembled the whole handling and when you have adjusted the working
length of the handling.
6. Press the snap button of the upper rod assemble (S-rod) and slide the
upper rod into the other locking ring of the middle rod assembly until the snap
button clicks into the hole locking the two assemblies into place. Tighten the
rod lock to secure the two assemblies together.
7. Wrap the cable around the rod leaving
enough slack near the searchcoil to permit
searchcoil adjustment.
Note: Do not allow the cable to flop loosely
over the searchcoil. Since the detector is
sensitive enough to see the tiny wires in the
cable, a floppy cable can cause false signals
as the searchcoil senses the moving wires. To
secure the coil cable from unwrapping you
should fix it to the lower and to the upper end
of the handling with the two cable retainers.
1

ASSEMBLING YOUR DETECTOR
Your detector is standardly equipped with 9X9" new SEF PRO coil. This coil
has better sensitivity and depth, better pin-pointing than the existing DD
coils, keeps perfect balance even in high temperature range.
For getting acquainted with the detector’s operation we recommend you at
first use this 9X9" coil. The bigger sized accessory 12X12" coil is more
sensitive and deep, but to use it you should have some more experience
with the operation of the detector.
For first tests and acquaintance with the detector we recommend you make
this in field conditions, away from the electromagnetic interferences of the
built up areas.
The length of the handling should be adjusted so that
the detector does not become tiring or uncomfortable
after long use. The detector grip should rest in your
hand with your arm relaxed, with the shaft extending
out in front of you. You should be able to swing the
detector back and forth in front of you, using relaxed
shoulder movement. The search coil should not touch
the ground during your sweep. The angle of the search
coil should allow its bottom to be parallel to the ground,
as shown on Figure 1 .
Swing the detector from side to side in about a three foot
arc, overlapping succeeding strokes well. The detector
is designed to get maximum depth without the requirement
for speed of sweeps, so go at a pace that is comfortable for
you. In fact, trying to hunt too fast may even cause a loss of depth in heavily
mineralized locations. Regardless of which mode you are using, try to keep
your search coil height constant and at about an
inch over the ground surface. Most people tend to
raise the coil at the end of the sweeps, much like a
pendulum, especially if they are in a hurry (Figure 2)
Try to avoid this as any increase in height from the
ground will cause a corresponding loss of detection
depth. This is easy in lawns, where you just allow
the coil to rest on the grass as you sweep from side
to side. In rough and rocky areas it is not so easy.
Hitting the ground or rocks may cause false signals.
The sharp lowering, pressing the coil to the ground,
especially in wet and heavily mineralized grounds,
could also cause false signals.
Figure 1
Figure 2
2

sens. pinpoint
ON/OFF
normal freq.1
heavy soil
tone 2
tone 1
freq.2
disc.
AMD
relic
relic
coins
coins
nugget
nugget foil
The detector is extremely intuitive and easy to operatе. It is designed to
operate with high quality, stability, sensitivity and detection depth without the
necessity of making manual ground adjustments to the different ground
conditions.
Turn the controls and switches to the red marked positions (Figure 3).
Tone 1/tone 2 and freq 1/freq 2 do
not have red markers, as they
do not influence the normal
mode of detector’s operation.
Tone 1/tone 2 is for a choice
of the sound frequency, which
will be heard when passing
over a metal target.
The freq 1/ freq.2 is
chosen depending on which
of these two frequencies the
detector is less noisy.
Choose the frequency with
one and the same level of
sensitivity of the device.
When turning the detector
on (with the on/off control)
it congratulates you with
alternating green and red
lights. Then for a second
the LED indicator will light
in green, if the batteries are charged, and in red if the batteries are
discharged and need to be recharged.
The sens control has two red zones depending on the type of search
The disc control has two red zones. For coin shooting use the coins zone.
If you want to dig the bigger sized ferrous targets like knives, arrows and
spears, rifles, guns, turn back this control to the relic position. In this position
the detector will reject only the tiny pieces of wire. For gold prospecting use
the nugget red zone of the disc. control. Do not increase the discrimination
beyond the foil mark, the detector will start rejecting some thin jewelry and
low conductivity coins or other targets. More detailed description of the
functions of this control will be given in the instructions further on.
The pinpoint button is also red, but it is not used in the process of searching.
It is pressed only when you want to determine the exact location of the
target. You could see more details about this function further in the manual.
NORMAL MODE OF OPERATION
Figure 3
3

The fully counterclockwise position of the disc. control is marked in red
- nugget. In this position you won’t have any audio discrimination of ferrous
objects, all metal objects in the ground will be indicated with one and the
same audio signal. In heavily mineralized grounds the tiny nuggets could
look like iron to the metal detector, and small iron
pieces could look like gold. With this setting you won’t
miss any metal target in the ground.
The second zone is the AMD (all metal disc) zone.
Here you also won’t have audio discrimination of the
metallic objects. With this lowest degree of the
discrimination the detector is very deep in the ground.
The professional TH-ers use this mode of operation to
study the new sites they are beginning to work on.
The advantage of the AMD and nugget adjustments
of the disc. control is that you won’t miss any metal
target in the ground. The bad thing is that you’ll have
to loose time digging too many unwanted ferrous targets like pieces of wire,
nails, etc.
The next zone of this control is relic. As we mentioned еarlier in this position
the detector will eliminate only the tiny pieces of wire. All the bigger sized
targets will be accepted. Most professionals prefer working with this
adjustment of the disc. control, because the detector is really deep rejecting
the unwanted very small iron pieces and trash.
The next zone of the disc. control is coins marked in red. Here you’ll have
good rejection of the ferrous targets, and you’ll accept all the non-ferrous
targets. We recommend this position of the disc. control for searching areas
littered with iron trash. If you have too many pieces of foils rotate the disc.
control after the foil zone. Have in mind that the categorical foil rejection will
bring to the rejection of some thin golden jewelry.
If you decide to use an even higher level of discrimination, you’ll reject the
foil, more of the pull tabs, screw caps, but you’ll loose some coins like the
nickel 5 cents. The detector will keep its good response to more of the coins,
like 1 cent, dime, quarter. Even the lower conductivity ancient coins like the
Greek obols, diobols, the Roman asses, follises, sestertii, the Byzantine
follises will produce nice, smooth response. A big part of the jewelry will be
rejected, as well as the thin small gold coins. We do not recommend such
high levels of discrimination.
Please, have in mind that even if you are with the highest discrimination
level the big oxidized irons will not be discriminated - they produce a strong,
cracked response, the more experienced detectorists manage to discern
them and avoid digging.
DISCRIMINATION CONTROL
4
Figure 4

The sens control is often thought of as a depth control and it is, but it can also
be used to make the detector more stable if interference caused by ground
mineralization or electromagnetic fields are experienced. If your detector is
quite nervous, noisy, please, decrease the sensitivity rotating the sens. control
counterclockwise. To get the best depth we would recommend to the most
experienced professional TH-ers with static coil to rotate
sens control clockwise until they hear rare, interrupted tones
from the speaker. When you start sweeping the coil these
tones will be oppressed by the ground, and you’ll hear the
useful responses from the targets in the ground.
NOTE: We recommend such an increase of the sensitivity
level only for the experienced professional TH-ers . For the
remaining operators we recommend to keep to the red
marked zones, and if they experience interferences to reduce
the sensitivity level.
For the professional TH-ers, who want to get the maximum sensitivity and
depth of their detector we could recommend the following:
Turn the detector off. Press and hold the pinpoint button, and turn the detector
on. Thus you’ll enter the highest sensitivity mode of detector’s operation. The
detector will be extremely sensitive and deep, but it is possible on heavy
grounds, salty wet sands, near high voltage power lines to give you some
parasitic signals.
When testing the detector in built-up places, where there are many
electromagnetic interferences, you won’t be able to increase too much the
sensitivity level. That is why the tests of the real parameters and qualities of the
detector should be made in field conditions.
If the detector is slightly noisy, before decreasing the sens.
level try with a change of the operation frequency (from freq.1
to freq.2 or vice versa) and check whether the detector has
become less noisy.
The normal position of the freq.1/freq.2 switch is the freq.1,
and it is for 13.89 kHz operating frequency. If there are
interferences received you could choose the frequency,
where the detector is less noisy. The frequency switch
positions are designed to eliminate the radio-frequency
interferences mainly in competition hunting or when searching
in close proximity to another detector with a similar operating
frequency.
OTHER CONTROLS
5
Figure 5
Figure 6

The next, very important control is the normal /
heavy soil switch. As we already mentioned, for
mass searching, and for maximum quality of
operation and detection depth on the most soil
types we would recommend operation in the
normal mode.
In the normal position of the switch(Figure 7) the
detector will be deeper in the ground.
Sometimes, while operating on very heavy and
wet grounds in the normal mode of operation is
possible to experience the so called affect of the
hole. especially when using bigger sized coils.
While passing the coil over an open hole in the ground, you could hear audio
signal from the detector, even if in the hole there is no metal object. To avoid
this unpleasant affect, please, switch to the heavy soil mode of operation.
Tone 1/tone 2 switch. This switch does not affect the quality of operation and
the sensitivity of the detector. It is for a choice of the frequency of the sound ,
which will be heard from the detector’s speaker when passing over a metal
target. In tone 1 position the frequency of the sound is 1140 Hz (high pitched
sound). In tone 2 position the sound is with a 570Hz frequency (low pitched
sound). Of course, every operator chooses the sound he prefers.
Pinpoint button. Once you have decided to dig
you should find the exact location of the metal
target in the ground. Move the coil off to one
side of target area, press and hold the pinpoint
button, and slowly, carefully keeping the coil at
a constant height over the ground surface, pass
the coil over the spot you believe the target to
be. A continuous tone will be heard as long as
the coil is over the target. The loudest and the
highest pitch sound coming from the speaker
indicates the exact center of the target.
OTHER CONTROLS
6
Figure 7
Figure 8

BEACH HUNTING
7
For beach hunting we recommend the operation of the detector in its normal
mode of operation. Lets start with the beach hunting on normal dry beaches.
These beaches are easiest for searching, and allow the highest increase of
the sensitivity level. Of course, if there are no strong electromagnetic fields
nearby. On the beaches the most valuable finds are the gold rings, gold
earrings, gold chains. May be you know, but the thin gold jewelry is low
conductivity, so not to miss them we recommend the position of the disc.
control between relic and coins. If you go further clockwise, beyond coins,
the detector will start rejecting the tiniest chains. If you want to ignore the thin
jewelry, and emphasize on coin shooting and search of higher conductivity
jewelry you could increase the disc. control level, so that you start rejecting
the most of the foils. This will save you the scooping of unnecessary trash,
but you’ll loose the thin golden jewelry.
Searching on salt wet sand beaches. In such conditions to have a smooth
operation of the detector, with no false signals, we recommend you decrease
the sensitivity level. And the most important - while sweeping over the wet
sand rotate the disc. control clockwise until the parasitic signals, caused by
the conductivity of the wet sand, disappear. This rejection of the parasitic
signals will be active after the coins zone. To keep a good sensitivity to the
targets in the wet sand it is very important to stop rotating the disc. control
exactly at the point where the parasitic signals are rejected. If you pass this
point you won’t hear any more parasitic signals, but will reject some good
targets.
Searching on black sands. These sands contain a high percentage of
magnetic negative iron oxides. In such conditions many of the low
conductivity non-ferrous targets will look like ferrous to the detectors. That is
why we recommend when hunting black sand that you decrease the disc.
control level. Remember that it is best to search in the normal mode of
operation. In such conditions it is advisable to use low levels of sensitivity
and discrimination - the AMD position of the disc. control. Do not worry
about the decrease of the level of discrimination - on the beaches the ferrous
targets are rarely met.

FALSE SIGNALS AND SOLUTIONS
8
A false signal occurs when something sounds like a good target, but it is not.
These signals are produced by undesirable or discriminated targets like large
pieces of iron, hot rocks or by electrical pulse-type electromagnetic
interference. Your EDS REACHER has a very good discrimination, but
some bad “targets” with similar electrical characteristics could fool it. Some
items very close to the searchcoil could sound good, as well as large pieces
of trash. Еxperience is the best teacher. With more practice with your EDS
REACHER you’ll soon learn how to distinguish the false signals. At first,
when you get a good response you’ll find that crossing over the target once
or twice more the signal would break up or completely disappear.
The sources of false signals could be:
- Electrical interference, caused by high voltage power lines, TV and radio
towers, electricity transformers, cells of mobile phone operators or other
detectors. Move farther away from the source, lower the sensitivity level. The
use of a smaller sized coil is also a good solution.
- Highly mineralized soils (with high iron or salt content). In such conditions
reduce the sensitivity, increase the level of discrimination. The smaller coils
are possible solution.
- Extremely trashy areas may cause a lot of “chatter”. Increase the
discrimination level or reduce the sensitivity, In some trashy areas the smaller
sized coil would be beneficial for target separation.
- Metal Interference. The EDS REACHER picks up metals beneath the
searchcoil, and if the metal objects are big - on the side of the search coil too.
. Be careful that your digging tool and metals in shoes are not near your coil,
and your coil cable isn’t hanging loose above the coil. Pay attention to be
away from railings, ferro-concrete poles, etc.

SEARCHCOILS
9
Your EDS REACHER detector is equipped with a latest generation NEW
SEF searchcoils (symmetrical electromagnetic field coils). The Standard SEF
coils are the best performance coils. Compared to the Double D coils they
have better ground balance, more stable operation, better depth of
penetration, better pinpointing, more accurate target identification. The NEW
SEF coils have even better sensitivity, higher temperature stability, even
better pinpointing. Your detector standard searchcoil is 9"x9"SEF.
The 9"x9" is the most universal size of searchcoil, and it is hardly a
coincidence that almost all the detectors on the market are equipped with
such size of coil. This searchcoil has good sensitivity - to small and to bigger
sized targets. It is good for search of jewelry, coins, and relic hunting. It is
designed for best all-arround performance, in all types of detecting. This is the
world’s lightest searchcoil of this size- it weighs only 300 g with the coil cover.
The smaller sized search coils give better target separation, i.e. more
distinct target response for metal objects buried closely together, which is
very useful when hunting trashy areas. At the moment as accessory coils are
offered the 6" closed solid design coil, and the 8"x6"SEF coil.
The accessory 12"x12" coil is recommended for TH-ers who has already
accumulated experience in operating the REACHER detector. Its
advantages towards the 9"x9" coil are that it has a better sensitivity and depth,
especially for the bigger sized targets, this searchcoil covers more ground. As
disadvantages could be given its more nervous operation in mineralized and
trashy grounds, slightly erratic operation on salt wet sands. As every bigger
sized coil it groups targets situated closely together.
No one search coil is better than all the rest. Selecting the right searchcoil
depends on the factors such as what are you searching for and search site
conditions.
All the EDS REACHER search coils are light for their sizes, very well
electrostatic shielded, resistant to shocks and shakes, perfectly balanced and
waterproof. They are all compatible and interchangeable, easy to mount and
require no special tools.
Coil covers
Your REACHER searchcoils come standardly with coil covers. They are
very useful to protect your searchcoil at any time, and we would warmly
recommend their constant use.

BATTERIES
10
Your detector is standardly powered by four 1.5V Alkaline batteries, size
AA (R6), which allow you to use the detector for 20-30 hours. The time of use
depends on how many signals your detector will locate and process and
whether you use headphones. The use of headphones will increase the time
of battery use.
As we have already mentioned, when turning the detector on the led
indicator will light in alternating green and red lights for a while, and then for a
second with green light, if your batteries are charged. If this light is red, you
should take out and replace the batteries or recharge them (if the batteries
are Ni-MH)
If in the process of operation of the detector the batteries are discharged
the low battery indicator will blink in red on every 20 seconds, and you’ll hear
warning audio signal. If you do not turn off the detector, this will continue until
the batteries are fully discharged (not too long time), which is not desirable,
because is extremely harmful for the batteries themselves.
To remove the batteries, make the following:
Remove the lid of the battery compartment on the backside of the control
box. You’ll see the batteries. In the bottom of the compartment are described
schematically 4 batteries and the direction of their location.
If the batteries are rechargeable, put them into the charger, of course,
keeping in mind the direction of their position in the charger. For a full charge
of your 1800 mAh batteries you’ll need about 15 hours. After the batteries are
recharged, or if you are going to use new alkaline batteries, put them into the
battery compartment, making certain to match the battery polarity with the
markings indicated on the bottom of the compartment..
WARNING: Be very careful to install correctly the batteries in the battery
compartment.

SPECIFICATIONS
11
Operating Frequency ................... Freq.1 - 13.89 kHz; Freq.2 - 13.74 kHz
Audio Frequency ............................................................................. 570 Hz
Weight (with batteries included)....................................................... 1460 g
Length (extended) ................................................................. 51"(1300 mm)
(unextended).............................................................. 41"(1050 mm)
Standard Searchcoil ................SEF Pro........... 9" X 9" (230mm X 230mm)
Optional Searchcoils SEF Pro .........12" X 12"(305mm X 305mm)
................................................. SEF Pro ............. 8" X 6"(150mm X 200mm)
.................................................. Round ...................................... 6" (150mm)
Headphones(accessory)......................................Impedance- 8 - 32 Ohms
Mono / Stereo Jack .......................... 1/4"(6.3mm)
Batteries ....................... Standard ................... Four 1.5V, size AA, Alkaline
....................................... Optional ............................. Four NiMH 1800 mAh
Ni-MH battery Life .................................................................. 20 - 30 hours
Low Battery Alert ................................................ Automatic LED and Audio
Ground Rejection .........................................................................Automatic
Search Modes ........................................................NORMAL, HEAVY SOIL
Controls ........................................................................ON/OFF sens., disc
Switches . tone 1(1140 Hz)/tone 2(570 Hz),normal/heavy soil, freq.1/freq.2
Buttons ........................................................................................... pinpoint
Warranty ............................ Control Box ....................................... 2 years
Searchcoils ......................................... 1 year
Patents ..................................................................................... BG 817 Y1

MAINTENANCE
12
The EDS REACHER is a high quality electronic instrument. Though
ruggedly constructed and designed to withstand the normal treasure hunting
demands proper care is essential.
Operate your detector as recommended in this instruction manual.
Remove the batteries from the detector if you are not going to use it for
extended period of time. This will prevent the detector from batteries leakage
damage.
Sweep the searchcoil carefully and avoid hitting it against rocks, trees
and other hard surfaces.
The use of coil cover is highly recommended to protect the searchcoil
from abrasion.
The searchcoil is waterproof, but the electronics are not. Always prevent
any moisture or water from entering the control box of the detector.
Protect your detector from dust, moisture, and extreme temperatures.
Keep it clean and dry and avoid getting sand and grit into the shafts or the
tightening nuts.
Do not use solvents to clean the detector.
Keep the coil cable properly wound around the shaft and protect it.
Floppy, pinched cable may short, causing erratic noises or unnecessary
replacement of the searchcoil.
Do not attempt to modify or repair the detector’s electronics as this will
void your detector’s warranty.

AIR TEST RESULTS
13
The table shows you the results of comparative air tests between your
REACHER detector with the standard 9"X9" searchcoil and other VLF
detectors of leading metal detectors manufacturers.
Please, note that with the 9"X9" coil the REACHER significantly exceeds
as sensitivity all the other tested detectors. For some of the targets the
parameter of your detector is even 60% better. Note that your detector has
equally good sensitivity to very small and to very big sized targets, to very low
and to very high conductivity targets. Even with the optional 6" coil your
detector exceeds the remaining detectors.
The tests are made at one and the same time (in one and the same
meteorological conditions), on the field, away from the electromagnetic
disturbances of the built up area.
The speed of passing the targets in front of the coil of each detector is a
normal (mean) speed. The same speed is the most appropriate one for
treasure hunting. With increase of the sweep speed the parameters of all
detectors are proportionally increased, but this is not realistic during treasure
hunting.
The tests are made in Discrimination mode of operation of the detectors.
All the detectors are with increased sensitivity level to the point where they
remain stable.
The test was made by an independent professional treasure hunter.

REACHER
14

15

12345678
910
17
19 13 16
18
151114
picture 1
16

D E T E C H L T D
7,Vassil Levski Str.
9 7 0 0 S h u m e n
B U L G A R I A
[e-mail]
tel: [phone]