GOLDEN MASK Golden Mask Deep Hunter Mobile ST User manual

Instruction manual

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Golden Mask Deep Hunter Mobile ST –Instruction manual
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Golden Mask Deep Hunter Mobile ST is a professional treasure and
relic hunting handheld metal detector designed primarily to detect
deeply buried metal objects.
Golden Mask Deep Hunter Mobile ST is an advanced pulse induction
metal detector, with full range “flash automatic ground exclusion
balance”, “Smart TUNE”, “reject control”and “discriminate”
between ferrous and non-ferrous metals. Its powerful performance is
based on the very high quality state-of-the-art sophisticated new
electronics.
Golden Mask Deep Hunter Mobile ST can significantly reduce the
negative effects of power line and other electrical interference.
Like well known Golden Mask Deep Hunter pulse detectors, this
detector offers remarkable stability, sensitivity and accuracy that is
achieved with the use of very simple and intuitive settings and especially
new "Smart TUNE" feature, which make this detector the best machine
in its class.
Pulse induction is based on the processing of short and intensive
magnetic pulses which are emitted by means of a search coil. Those
magnetic pulses produce electrical eddy currents in conducting metallic
objects. Eddy currents will be stored in a metallic object around of the
search coil but will quickly die away after the magnetic pulse emitted by
the search coil has ended. The eddy currents and their time delay are
read by the receiving phase by the search coil which now acts as a
receiving coil. The received signal is amplified to drive an audio
response via built-in loudspeaker or headphones when a metallic object
is within the field of the search coil.

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1.Golden Mask Deep Hunter Mobile ST Set
1.1 Electronics Unit
The electronic unit is fixed on the handle of the search antenna carrying
shaft.
The detector is powered by 12.0V/2700 mAh NiMH battery pack of 10
pcs size “AA” cells placed in a holder into the battery block, also fixed
on the shaft.
The continuous use of the detector is about 8 hours per one battery
charge.
If you find a defect of the detector, please immediately contact the
dealer from whom you was purchased it and inform him of the
problem.
Never attempt to disassemble and/or repair the electronic unit.
Your disassembly attempts will void the warranty!
1.2 Search Coils
The detector is delivered with a variety of coils as desired by the
customer. All search coils and frames, manufactured to work with
Golden Mask pulse detectors, are fully compatible with Golden Mask
Deep Hunter Mobile ST.
The use of self-made or other brands of coils can damage the
Electronics Unit and will void the warranty.
The main search coil of the Golden Mask Deep Hunter Mobile ST is
an elliptical coil 38x58 cm. It allows to be searching for both small
objects (for example - coins) and larger objects (relics) at a very great
depth using only this coil.
Another small size coils are available too. They are suitable for areas
where the movement of the big coil is difficult or impossible, as well as
in residential areas (walls, floors and ceilings), and on steeply sloped
terrain.
1.3 Golden Mask smart battery charger
1.4 This Instruction Manual

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2.Operating Principle - high-frequency pulse induction (advanced
version) with full range flash automatic ground balance, and
multichannel signal processing to identify between ferrous and non-
ferrous metals.
3.Settings - Golden Mask Deep Hunter Mobile ST has extremely
simple and intuitive settings, that include 4 knobs (of these: 3 with
switching function - one for switching-on/off the unit, 1 for the special
“Silent”mode and 1 for the switching-on/of of “REJECT”control) 1
button for “SMART TUNE” and 1 special meter indicator.

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“VOLUME ON/Off” -knob to switch “ON/Off” the detector and adjusting
the level of sound.
“GAIN”- knob to adjust the sensitivity of the detector;
“AUDIO - Silent”- knob for adjusting the “ticking” frequency in absence
of metal within the area of the search antenna; In positions “AUDIO”
the detector is in its core search mode. This is strictly individual
adjustment and relates exclusively to the individual auditory
characteristics of the operator. It is best to set a low “ticking” rate in the
absence of metals near the coil. It does not affect the performance of
the detector and is designed solely to provide a better detection of weak
signals.
When “AUDIO - Silent” is in position “Silent”the detector is switched
to silent mode. With this mode the detector does not emit a “ticking”
sound during searches. The presence of a metal object in the area of
the coil is indicated by a low pitch tone (for ferrous metals) or high
pitch tone (non-ferrous metals). In this mode, the detector's sensitivity
is lower, but it is suitable for work in conditions of heterogeneous and/or
highly mineralized soil, including the presence of ceramic residues
and/or small metal objects that are not desired for detection.
The “REJECT”knob is used for rejecting undesirable small pieces of
metal and noise reduction in extremely mineralized soils. A higher value
rejects more objects. It can be switched “Off” if this function is not
required for the specific use of the detector.
“SMART TUNE” –this button is used for fast tune of the machine. It
pressing for a 1 second make the detector more stabile and "deep". This
feature is performed by “smart” retuning both special systems - AGEB
and tracking control. It can be used for removing of interferences and
noises encountered during the search process too.
"SIGNAL" is a precision high quality analog meter indicating the
strength of the received signal and the level of charge of the built-in

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battery; there are 3 embedded LEDs for indicating the type of the metal
and the condition of the battery:
"Fe", "n-Fe" - LED indication of the type of metal - green for
ferrous metals and red for non-ferrous metals;
"Battery!" is a LED for indicating less than 10% residual charge
of the built-in battery, indicating a necessary recharge (see #9);
The battery check function is set to run automatically each time the
detector is turned on. For a few seconds, the arrow on the meter shows
the battery status. If this reading is in the green sector of the scale - the
battery has enough charge and the detector can be used. When the
arrow shows values close to the red sector and/or the LED "Battery"
lights up red - the battery must be charged. (see #9)
4.Ground Balance.
The Golden Mask Deep Hunter Mobile ST provides full range
automatic ground balance based on a special “Flash Auto Ground
Balance”system which is a standard to all pulse detectors Golden
Mask. It does not need any settings and continuously rejects the signals
generated by changing soil conditions encountered while searching.
In high mineralized soils the noises have to be reduced additionally by
the “REJECT” control knob or by reducing the “GAIN” control of the
detector.
5.Search for metal objects.
The search for metal objects with the Deep Hunter Mobile ST consists
of slowly moving the search antenna above the ground. It is important
to know that this detector achieves the best results when the antenna is
kept at a constant height of 10 ÷12 cm from the ground. If you hold the
coil too low or touch the ground, you will experience faulty signals.
Unlike traditional VLF metal detectors, using the principle of inductive
balance and some pulse detectors designed for gold prospecting
mainly, the Golden Mask Deep Hunter Mobile ST can detect metallic
objects without motion. It is “no motion” machine. The movement is
only necessary to identify the type of metal, a speed of about one m/s
is sufficient for the discrimination system to function properly.

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6.Indication of the presence of a metal object within the coil area:
The signal from a metal object, located in the area of the search coil is
indicated by increasing the frequency of the sound signal (“ticking”
sound).
Most weak signals an operator is able to notice are improved by
doubling the preset frequency of the sound, which is set with the
“AUDIO - Silent” knob. This is perceived accurately by the human ear
and therefore it needs to be set very precisely, so that the sound
frequency without the presence of a signal to be only a few Hz (slow
“ticking” sound).
Each “signal”has “start”and “end”. The Golden Mask Deep Hunter
Mobile ST has a very well expressed “zone”indication from deeply
buried metal objects. The length and width of this “zone” is a guide to
the depth/size of the metal objects. When this length is greater than the
size of the search coil and has an expressed peak in the middle this
certainly indicates a deeply buried metallic object. If the signal is of a
short duration (small area), but is captured only in the central part of the
coil, then you can also expect a deeply buried metal object. Double
audible responses corresponding to the passage of the front and rear
ends of the coil over the metal object are a sure indication of relatively
small metallic object not deeply buried. After reaching a certain signal
strength (which will be indicated on the indicator “SIGNAL”), the
identification of the type of metal through the LEDs mounted in the
indicating “SIGNAL” will start to work. The red color indicates non-
ferrous metals and green indicates ferrous metals (iron). To present a
high probability of proper metal type identification, when you detect a
target, move the coil outside the target area, press the “SMART TUNE”
button and then pass the antenna over the target from a different
direction. Repeat as many times as you want to identify the type of the
metal more securely. With a little experience, anyone can learn to
recognize the nature of the various signals, which will lead to better use
of the great capabilities of the Golden Mask Deep Hunter Mobile ST.

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7. Silent mode
In silent mode the detector can be switched with the “AUDIO -Silent”
knob, when it is set to "Silent".
This mode can be chosen at any time. In silent mode the “ticking”
sound is not heard and the presence of metal target will be indicated
with a high pitch tone for non-ferrous metals, and low pitch tone for
ferrous metals. In the silent mode the sensitivity is lower, but this mode
is very suitable for highly “trashy" sites (where some small, mainly iron
metal objects are present, and these objects are not an objective of the
search). In this mode, the detector achieves a stronger “rejection”of
junk metals and provides a much more efficient search of large objects.
8.Rejection of small metal objects.
Often, in an area where large metal objects are searched for and the
metal detector is set to high level of “GAIN” control, many (unwanted)
small metal targets could be indicated. Decreasing the “GAIN” control
(sensitivity) and/or use of “Silent” mode sometimes could return
acceptable results, but the Golden Mask Deep Hunter Mobile ST
provides the ability to eliminate small metal objects without reducing the
sensitivity. This is accomplished with the “REJECT”knob. The lower
the value selected with this knob, smaller metal objects are detected.
After doing some tests with multiple "samples" of different metallic
objects, you will learn which values of the “REJECT” settings are best
for your needs.
9.Charging the battery: To ensure longer life of the battery it must be
charged with only the supplied charger. You will regularly check the
charge level of the battery after every one switch “ON” of the detector
and you must turn off the detector once the red LED "Battery" (located
in the lower right corner of the indicator) is lit.
To charge the battery:
1. Turn “Off” the detector, remove the coil jack and plug the
charger jack into the connector on the rear side of the battery block.

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2. Place the detector in near a power outlet with voltage 120-240V
and connect the automatic charger into the outlet.
The charging is indicated with a RED-color LED light on the
charger housing. When the charging process is completed, the same
LED turns BLUE-color light.
The duration of charge of an discharged battery is about 6 - 8
hours.
When the charge is completed, remove the charger from the
power socket and then remove the charger jack from the detector.
3. Turn “On” the detector and see the battery level. With a
properly charged battery, the arm of the indicator must show a value
greater than “8”. If the reading is lower than “8”, reconnect the charger
and repeat the charging process!
To replace the batteries from the battery holder you must open the
front cover of the battery block.
WARNING!
Only use NiMH battery cells with capacity at least 2200 mAh and
size “AA”.

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OPERATING NOTES:
1.If, while searching, random disturbances or prolonged changes of the
frequency of the sound signal (false signals) appear, the “SMART
TUNE” button must be pressed. This action can be repeated several
times to ensurecomplete elimination ofthe interference and re-establish
stabile operation. Reducing the signal amplification (“GAIN”)will also
reduce interferences.
2. When switching “Off” the detector, the red LED “Battery!” will be lit
for a second or two. This does not indicate a battery problem. Only when
this LED lights-up when the detector is turned “On” (running), you
should charge the battery.
3. Do not use (or leave) the detector in a humid environment or in wet
bushes, snow and/or water –the electronics unit and battery block could
be damaged as it is not sealed. When you connect the coil to the
electronic block, you should prevent the entry of dirt or moisture in and
around the contact pins of the connectors.
4. Working with the detector in industrial areas and places with a large
amount of metal junk in the soil, and/or with presence of
industrial electromagnetic interferences, can lead to instability and/or
inability to work. This requires reducing the sensitivity of the device with
the “GAIN”knob, which will reduce the depth of detection, but this will
be the only way to achieve stability in such conditions.
5. After extensive work with the detector, with repeated attachment and
removal of search coil connectors, the connector could be damaged -
please carry out these activities very precisely and carefully to avoid
costly and severe damage. Contact points of the connector should be
kept clean and dry.
6. If the indicator “SIGNAL” shows a negative value (arrow deviates to
the left of zero) after lifting the coil from the ground, this means that a
metallic object was located under the coil. In such cases, move the coil

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to another location, turn on the device again, press briefly the “SMART
TUNE” button and start the search.
7. Switch-on the detector for about 15 minutes in the area of search
before starting to search for metal objects. During this time the Golden
Mask Deep Hunter Mobile ST electronics are self-adjusting to the
ambient temperature/humidity and the detector reaches its optimum
operating capabilities.
8. If you use the detector in areas where there is possibility of the
presence of buried weapons and/or explosives, you must proceed with
great caution. The manufacturer and the dealers are not responsible for
the any damage or injuries resulting from such use of the detector.
9. If you are looking for metal objects in areas where there could be
underground pipe or electrical lines, you must call the relevant
authorities responsible for the maintenance of these lines for
permission. Do not perform excavation without proper permission. This
is especially important in regions in and around cities and industrial
sites.
10. The manufacturer and dealers are not liable for trespass, damages
or injuries that could result from any use of the Golden Mask Deep
Hunter Mobile ST.
11. The manufacturer and dealers are not liable for trespass, damages
or injuries that could result from any use of the Golden Mask Deep
Hunter Mobile ST.
Rev. 01.2022

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Golden Mask Deep Hunter Mobile ST –Instruction manual
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