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• -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 antenna direction/location, or replace it to an

antenna with higher gain to increase input signal strength.

Repeater can not communicate in Power-ON status

1. The power is on but there is a signal fluctuation or a flash signal. The phone call cannot be made/received.

It shall be caused by the insufficient isolation between outdoor and indoor antennas.

Please take the following measures:

- Firstly check whether the alarm LED lights. The light may indicate the isolation is insufficient.

- Secondly adjust the antennas’ directions or locations or enlarge distance between them.

- Thirdly reduce the repeater’s gain by ATT DIP if the above listed methods don’t work.

The following measures can also be helpful:

- Use the roof of the building to enlarge isolation (Please try to place the outdoor antenna and indoor antenna on
different floors).

- Use some obstacles (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

operators’ signals are 10 dB stronger than the needed signals.)

Solution 1:

Change the direction of the outdoor antenna or its installation position, so that the gap of signal strength is

reduced between operators.

Solution 2:

Use barriers (like buildings and walls) to block signals from other operators.

Summary of Contents for LCD-500GDW

Page 1: ...MYAMPLIFIERS COM INSTALLATION GUIDE CELL PHONE AMPLIFIER Nikrans LCD 500GDW Freq 900 1800 2100 MHz Coverage 500 m ...

Page 2: ...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 module to touch electronic component The components will be damaged due to electrostatic Please keep away from heating equipment because the repeater dissipates heat during working And do not cover a booster with anything that influences heat dissip...

Page 3: ...s 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: ...so improves signals at 2100 MHz frequency which is used for 3G data transmission The Nikrans LCD 500GDW booster for cell phone is compatible with mobile operators of the European Union and all over the world Benefits and features Nikrans LCD 500GDW has such innovative features as LCD display The amplifier has a smart display showing installation tips error solutions signal strength and other impor...

Page 5: ...Hz 1710 1785MHz 1920 1980MHz MHz Down link freq 935 960MHz 1805 1880MHz 2110 2170MHz MHz Up link Gain 65 dB Down link Gain 70 dB Power Output Input AC90 264V output DC5V 2A Working t C 25 55 Humidity 5 95 Size mm 204 164 44mm Booster Weight 1 2 kg dBm 15 dBm ...

Page 6: ... 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 mo...

Page 7: ......

Page 8: ...f 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 ou...

Page 9: ...te 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 feeder system in accordance with the system requirements Avoid deforming the antenna feeder ...

Page 10: ...htning Surge Protector FAQ How does a lightning surge protector work These devices divert excess voltage and current from transient and surge into grounding wire preventing it from flowing through the electrical and electronic equipment while at the same time allowing the normal voltage to continue along its path How can I understand that a surge protector is correctly installed The lightning surg...

Page 11: ...s 2 It is better to use a directional panel antenna or Yaggi 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 10 15 meter distance from an outdoor antenna indoor antenna should be at least 2 meters above the ground indoor antenna should be fixed vert...

Page 12: ...s 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 Power requirement Generally AC 100 264V AC 50 5Hz power supply is required Installation Steps Installation schemes Installation with 1 indoor antenna ...

Page 13: ...onnect outdoor and indoor antennas in the proper way 5 Test the signal of your mobile telephone a maximum quantity of bars should be indicated on the display of your phone in each corner of the location within booster coverage zone In case the mobile signal is still instable try to change the position of the outdoor antenna for more proper one Important notes for installation 1 Cables from outdoor...

Page 14: ...nas correctly according to the instructions above 8 Using multiple Signal Boosters in one installation could cause interference to the base station except for the In Line Signal Boosters Repeater s ports description 1 Outdoor port BS for connecting the outdoor antenna by cable 2 Indoor port MS1 for connecting the indoor ceiling antenna by cable 3 Indoor port MS2 for connecting the indoor whip ante...

Page 15: ...ws the level of outdoor incoming signal for the corresponding frequency band Make sure it is as low as possible Note For the optimal functioning of the booster the BS input index should be from 65 to 50 dBm If the BS is lower than 65dBm the coverage will be smaller However the device can work normally If the BS is too weak it ll be necessary to adjust the position of the outdoor antenna by raising...

Page 16: ...f the device or see the error description DOWN Button Go to the next page to check the functioning status of the device or see the error description On the LCD screen you can see essential data about supported frequency bands Depending on your model and the number of bands the displayed data will vary If you have a dual band model 2 bands S1 data for the lowest of the supported bands S2 data for t...

Page 17: ... correct booster functioning For the optimal functioning of the booster the BS input readings should be between 65 and 50 dBm The MS output power readings must be between 05 and 15 dBm Device Gain must be 65 65 dB If the BS is lower than 65dBm the coverage will be smaller However the device can work normally If the BS is too weak it ll be necessary to adjust the position of the outdoor antenna by ...

Page 18: ...mean The signal booster enters into Sleep mode only when you don t use it During Sleep mode only the LCD display turns off while the amplification system keeps on functioning This function allows saving energy In case you need to see information on the screen just push any button Can I use 1 indoor antenna if I don t need 2 Yes you can use only 1 indoor antenna if the distance between both indoor ...

Page 19: ...n small parts of the area have not been improved please check the following Check whether the indoor antenna is installed correctly or not you may try to change the antenna location to improve coverage Check if it is necessary to adjust the direction of the indoor antenna Check whether it is necessary to add one or more antennas to enhance the coverage in special areas For maximum precision in sig...

Page 20: ...icient Secondly adjust the antennas directions or locations or enlarge distance between them Thirdly reduce the repeater s gain by ATT DIP if the above listed methods don t work The following measures can also be helpful Use the roof of the building to enlarge isolation Please try to place the outdoor antenna and indoor antenna on different floors Use some obstacles Such as walls 2 The repeater s ...

Page 21: ...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 ve...

Page 22: ...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 200...

Page 23: ...es that this signal booster is in compliance with the essential requirements and other relevant provisions of Radio Equipment Directive RED 2014 53 UE CE marking contact myamplifiers com 44 8000485044 Sales MyAmplifiers com ...

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