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2. INTRODUCTION AND REASONS FOR WEAK

CELLULAR SIGNALS

Mobile Signal Booster is a perfect solution for providing improvement of cellular signal reception inside a
house, office, restaurant, VIP Room, apartment, building or shopping mall.

Generally cell phones cannot pick up or maintain a strong cellular signal due to one of the two following
reasons:

1.

Location of the Nearest Base Station

– Base stations are used to provide broad coverage. However

there are many areas in which signal strength gets reduced due to topographic peculiarities or local
Governmental restrictions regarding the height or location of base stations. Rural areas generally have
fewer base stations than urban regions.

2.

Natural and Man-Made Obstructions

– Signal strength can also be negatively affected by trees, hills,

buildings, weather and other obstructions. You may be relatively close to a base station but still unable to
make a call. This often occurs inside houses, offices and other buildings with stucco, concrete or metal
walls that may block the signal.

The Signal Booster works with two antennas. An Indoor antenna communicates with your cell phone and
an Outdoor antenna communicates with the base station (BS). The Outdoor antenna receives a signal from
the BS and sends it through the cable to the Signal Booster, where it gets amplified and re-transmitted by
the Indoor antenna throughout a building. When the Indoor antenna picks up a signal from your cellular
device, the Signal Booster amplifies that signal and transmits it through the cable to the Outdoor antenna
and back to the BS.

(Note: The Signal Booster will only operate if there is an adequate signal to amplify.)

Summary of Contents for LCD1200-4G-D

Page 1: ...WWW MOBILE SIGNAL BOOSTERS SHOP INSTALLATION GUIDE PHONE SIGNAL BOOSTER Nikrans LCD1200 4G D Freq 800 1800 MHz Coverage 13000 ft ...

Page 2: ...eet security requirements any operation shall be carried out only after turning off power in advance Only the professional is authorized for the operation Do not dismantle machine maintain or replace its components by yourself because this way the equipment may be damaged and you may even get an electric shock Do not open the repeater touch the module of the repeater or open the cover of the modul...

Page 3: ... Signal strength can also be negatively affected by trees hills buildings weather and other obstructions You may be relatively close to a base station but still unable to make a call This often occurs inside houses offices and other buildings with stucco concrete or metal walls that may block the signal The Signal Booster works with two antennas An Indoor antenna communicates with your cell phone ...

Page 4: ...rground shops and clubs restaurants and bars with several floors Thanks to its dualband working mode the mobile repeater ensures high speed and stable 4G mobile internet without drops on 800 and 1800MHz frequency bands Also the repeater model stabilizes your GSM voice communication on condition that your mobile provider supports GSM 1800MHz band The new Nikrans dual band amplifier with LCD screen ...

Page 5: ...0 ft Up link freq 791 821 1805 1880 MHz Down link freq 791 821 1805 1880 MHz Up link Gain 70 dB Down link Gain 75 dB Power supply AC 110 220V DC5V 6A 15W Working t C 25 55 Humidity 5 95 Size mm 310 270 60 Booster Weight 4 2 kg dBm 27 dBm ...

Page 6: ...e band Yaggi is recommended Function To pick up outside signals from the base station and send them by cable to the repeater outdoor antenna also transmits the uplink signals from the repeater back to the base station Indoor Antenna It is mounted inside a building to transmit the improved signals throughout the coverage area Cables Сoaxial cables for indoor and outdoor antennas Mountings Special m...

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Page 8: ...e of the building aiming away from the building which will reduce amount of possible obstacles For your convenience and acceleration of the process perform the testing in pair The mobile phone shall display full bar signals in location where the outdoor antenna is installed Phone calls or data transmission shall be smooth and stable It is recommended to test the signal 3 times in location where an...

Page 9: ...per isolation measures if they have to be placed on the same cable racks owing to the site condition restrictions 3 Fasten all connection parts of the whole system in correct order from the antenna to repeater interfaces and make sure that the electrical interfaces are well contacted Give waterproof treatment to outdoor connection parts 4 Take lightning protection measures for the antenna and feed...

Page 10: ...ggi antenna when the area shape is long and narrow corridors long row of houses in two sides tunnels or elevators or rural open space Requirements to indoor antenna installation indoor antenna should be 5 meter distance from an outdoor antenna indoor antenna should be at least 2 meters above the ground indoor antenna should be fixed vertically with the ground ...

Page 11: ...or smoke or on a cool and ventilated wall to ensure excellent heat dissipation 2 Installation height should be sufficient for RF cable wiring heat dissipation and maintenance 3 Independent and stable power supply is necessary 7 1 2 Power requirement Generally AC 100 264V AC 50 5Hz power supply is required 7 2 Installation Steps 7 2 1 Installation schemes Installation with 1 indoor antenna ...

Page 12: ...e placed as straight as possible in order not to create any hindrance for signal reception and its transmission 2 Cables should be shortened to the acceptable maximum so that not to waste or decrease mobile signal coverage range 3 In order to prevent water from coming into the mobile phone booster through the cable make a loop in it 4 Keep the outdoor antenna as far as possible from frequency aeri...

Page 13: ...errors green color turns to red and starts flicking Each band has a indicator light to denote its operation status When GSM downlink has 0dBm output GSM indicator light is always on which means that GSM band operates correctly If this light is off it means that an input signal for GSM band is too weak The indicator lights for DCS and WCDMA bands have the same meanings Fault alarm light is red When...

Page 14: ...ation Solution 2 Change the position of the outdoor antenna Try to put it as high as possible Solution 3 Reinstall the outdoor antenna trying to avoid obstacles between the antenna and provider s base station If the device detects that the outdoor antenna is too close to the indoor change the position of either or both antennas to avoid self oscillation Mount them at least 15m one from another If ...

Page 15: ...ce the outdoor antenna at the largest possible distance from the indoor antenna 7 4 System Test 7 4 1 Check whether the coverage is good 1 Take a test with a mobile phone or a data card engineering mobile phone is preferred To test signal level with a cell phone make use of its engineering mode Field Test Mode which is an application available in free access or a phone mode requiring no extra setu...

Page 16: ...e reception you ll get 105 to 100 Bad drop call 99 to 90 Getting bad signal may break up 89 to 80 OK shouldn t have problems but maybe 79 to 65 Good Over 65 Excellent Your task is to get at least 79dB signal to ensure reliable communication and strong signal inside the building Remark Reduce attenuation values by ensuring the isolation level Increase output power recommended ways to adjust outdoor...

Page 17: ...acles Such as walls 2 The repeater s power is on but the phone cannot get connected to the network and still can not communicate Reason 1 There are loose or wrong connections in the repeater system Solution Please try to fasten the connections between different parts of the system Reason 2 The signals received by outdoor antenna of other operators nearby are too strong For example the other operat...

Page 18: ... installing the repeater what should I do Check if the repeater s power supply works normally or not 3 If repeater s power supply is normal ALM light is on or flashing all the time what should I do Firstly check whether all connectors are connected well or not If it is all right please adjust the direction of the outdoor and indoor antenna Make sure the horizontal distance is 75 feet or more the v...

Page 19: ... in one solutions covering up to 5000 m2 Depending on the model boosters operate in GSM DCS CDMA LTE or combination of these standards at 850 2100 MHz frequencies The product line is extended with a series of antennas splitters and other accessories for completing exclusive custom projects of any difficulty level Nikrans product development process is rigorously assessed to comply with ISO 9001 20...

Page 20: ...s signal booster is in compliance with the essential requirements and other relevant provisions of Radio Equipment Directive RED 2014 53 UE CE marking info mobile signal boosters shop 448000698689 Sales www mobile signal boosters shop ...

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