installation guide
Contents
1. MyAm plif ers INSTALLATION GUIDE Mobile Signal Repeater MA 250CP 850 1900 MHz Coverage 250 m Preface This user s manual describes the installation and maintenance of wide band consumer boosters Please do read user manual carefully before installing and maintaining repeaters The information in this manual is subject to change without prior notice 1 Safety Warnings Users must follow the principles below Repeater should follow system requirements assure good grounding and lightning protection The power supply voltage of repeater should meet 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 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 dissipation gt PF EP P Pe 2 Introduction and Reasons for Weak Cellular Signals Cell Phone Signal Booster is a perfect solution for providing improvement of cellular signal reception inside a house office restaurant2. 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 setups On most used mobile OS operating systems the test mode can be started as follows iOS Type 3001 12345 and hit Call Android Type 197328640 to activate Windows Type 3282 and start Blackberry Press TOOLS SETTINGS STATUS or OPTIONS STATUS o O o o Note To get parameters for 2G 3G and LTE disable WiFi In case you cannot find Field Test Mode on your cell phone use bars on the screen of your mobile phone to evaluate the change If the signals in most areas have not been improved please check recommendations below again Weak input signal leads to low output power To increase input signal power level change the direction of the outdoor antenna or its installation position or replace it for an antenna with higher gain Check whether it is necessary to use additional indoor antennas as barriers block signal penetration also check whether the repeater s power is enough please install extra indoor antennas or replace the repeater for another model with higher power level 2 If the signals in 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 adjus
3. 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 8 FAQ 1 Will booster increase the RF radiation No it will decrease instead Every cell phone irradiates heavily being in zones with poor mobile signal as a cell phone is constantly in searching mode The danger is your cell phone is about 2cm to your body which makes its usage rather harmful And whe
4. 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 sig
5. and cables and power it on 2 A person on the roof aims the antenna in a certain direction The other person inside waits for 1 minute and checks signal level on the phone 3 Then rotate the antenna its 1 8th of the way around which equals 45 degrees The person inside does the same procedure with signal testing 4 Repeat the process 8 times until you try all 8 directions in every 45 degrees sector 5 Compare the results of signal testing the closer dB parameter to 0 the better booster performance you get 6 Fix the antenna in the direction with better signal result Note We recommend mounting the antenna on the side 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 e 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 outdoor antenna is to be installed As shown from the illustration above you should test the signals in points from A to E and select a best place that displays full bar signals e Outdoor antenna installation Requirements Outdoor antenna should be installed on the roof of the house or in some other place where your mobile device is within coverage zone Mobile signal should be as strong that at least three four bars are
6. and is proved with CE and RoHS certificates That s why a 2 year warranty applies to any of Nikrans boosters Certificates fra dis Certificate Expe rtise of Registration Expert Opinion of the Notified Body on the Conformity Assessment Josording to Article 10 5 of RETTE Directive IAE QUALITY MANAGEMENT SYSTEM ISO 9001 2008 PHOENIX TESTLAB EU Identification Number 0700 gt s b d araras masson _ Holas Certcato No FM 583302 z ot and oporalos a Qualy Management System which complies wit the sequwenonts oF ISO 001 2008 forth ORG y a scopo Tho getign and producton of wireless telecommunicatons repeater for mobs ea _ MF OAR RO ELAN PARA RB e o E EZ m r a o X o o For and onbehar of BS CE marking mz Marking Example Class 2 07000 ii Th corsticate is mues im accordance ato the Drectve 1995520 of hve European Partamert ang mwe Courct on rage Gory Fenton Global Assurance Director A wre ESNE Pe PL eae Y Ba COTO SS FM 1 0 Originaty registered 071082012 Leet eave aana Expiry Date 08082015 Pe AN im Page tort A imas OC ew NA Place Date of iaeoe Am m Dad by Aan Lane een a as seront ma enara Pe sey ea BRS Pe oram ore rene ma Sire eas tno mn seat gta rc rn 70 oie Es IA range aria ou a Bogner enone ma a y o To cpa sun een oe E roenn restas Goon e a nope A rs eesosas Io Fler r
7. indicated on your phone display Outdoor antenna should be fixed in straightly It is necessary to waterproof connectors of the outdoor antenna and feeder lines Repeater is a two way signal amplifier So proper isolation between outdoor antenna and indoor antenna is necessary in order to avoid self oscillation A perfect example of self oscillation is when you take a MIC and a loudspeaker for example if they are too close to each other it could cause big noise If isolation can t be achieved due to limited distance the roof of the building walls or any other barriers can be used between antennas to increase isolation Installation of a panel antenna as an outdoor antenna o 4 FT woo st ki nej SK DD Installation of a wide directional antenna as an outdoor antenna Installation of a Yaggi antenna as an outdoor antenna Fina 2 LO toal oo F 6 2 Cable layout and connector assembly 1 Keep the type specifications routing direction location and curvature radius of cables in compliance with the model requirements Place cables in correct order bend them smoothly and protect the surface from any damage 2 Place RF cables separately from power cables Take proper 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 tha
8. Fr tuana Cusey at paarse n Coord ray gut TOR w 349 Dc Mn Romi USD VA AAE C GR oe wn e Restate Gn Cones A Attestation of Global Compliance Shenzhen Co Ltd 2 F Bulding 2 No 1 No 4 Cha Sanwei Technical Industrial Park Gushu Xtxiang Street Bao an District Shenzhen China Tot 86 755 2908 1966 Fax 86 755 2600 8484 E makagcgiege cert com Hitp www ago cert com Certification of Product Declarations Application of the Council Directive 2011 65 EU on the restriction of the use of certain hazardous substances in the electrical and electronic equipment MyAmplifiers 44 2037691854 UK 33 975122740 France 16178610605 US E mail contact myamplifiers com Skype gsm_amplifier www myamplifiers com
9. GSM900 all the accessories must support the GSM900 frequency 7 3 Repeater Settings 7 3 1 Indicator Light Instructions e There are 5 indicator lights PWR power ALM alarm three signal strength indicators e Power light is always on green e ALM light is red When the booster works normally this light is off when the booster suffers from self oscillation or input signal is too strong this light is flicking In this case the power turns off automatically and restarts after 30seconds After repeating 5 times the light turns on again and it will restart after 1 hour If the problem still exists the light will be flicking again e There are totally 3 signal strength indicators they indicate signal strength as OdBm 5dBm 10dBm no matter of what frequency is the signal that reaches the booster that light will be on The light colors are yellow OdBm green 5dBm blue 10dBm Troubleshooting e When the ALM light is flicking or on and the booster has self oscillation issue it indicates the wrong installation of indoor and outdoor antenna In this case please read antenna installation instructions again and re install the antennas e When the ALM light is flicking or on and the input signal is too strong please change the direction or place of your outdoor 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
10. ds BTS antenna and make sure it can accept the strongest signal 5 After installing the repeater the signal is good but the connection is slow or intermittent or cannot hear clearly the other side 1 Please check the indoor antenna position and whether the cables and connectors are connected correctly or not 2 Adjust the indoor antenna direction and make sure it can easily receive a cell phone signal 9 About Nikrans Brand Nikrans boosters is the result of a 7 year experience in selling cell phone signal amplifiers throughout EMEA APAC NAR and other regions For all these years we ve been following the market carefully listening to customers and industry leading experts with the aim of working up our own vision and quality standards in signal amplification Nikrans product line includes about 40 models from basic single band devices with 100 m coverage to high end all in one solutions covering up to 5000 m 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 2008 standard and implicates internal tests which greatly ensures the quality of our goods High product quality is also confirmed by Phoenix Testlab Germany
11. lly AC 100 264V AC 50 5Hz power supply is required 7 2 Installation Steps 7 2 1 Installation schemes INSTALLATION STEPS Pe Find an appropriate position for an outdoor antenna see the requirements in 6 1 sect Plug in the outdoor antenna to the mobile booster from BS side and fasten tightly Plug in the indoor antenna to the mobile booster from MS side and fasten tightly Connect the signal booster to the Power Supply Some models have an inbuilt Power Supply Please examine the manual applied to your model if your signal repeater kit doesn t include separate Power Supply skip this step If the light indicator on the booster turns on it means the installation has been implemented correctly NOTE Switch on the signal booster only after you connect outdoor and indoor antennas in the proper way 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 Cables from outdoor antenna should not be wound and be placed as straight as possible in order not to create any hindrance for signal reception and its transmission Cables should be shortened to the acceptable maximum so that not to waste or decrease mobile signal coverage range 3 In order
12. n a booster is installed it improves the mobile signals in the coverage and your cell phone stops irradiating strongly thus it will reduce the RF radiation of the mobile phone tremendously The maximum power level of booster is 0 01W and it decreases to be maximum 0 001W when reaching indoor antenna And since the indoor antenna is installed over the ceiling or onto the wall there is usually more than 3 meter away from the human body 3meter away means at least 40dB propagation loss or 10000 times less 0 0000001W and therefore it is too weak to influence human bodies though it is still a very good signal for mobile phones 2 If the power indicator is off after 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 vertical distance is 20 feet or more 4 If the repeater and power supply are installed correctly why the signal is still bad 1 According to the steps above verify if all the cables and connectors are connected correctly or not and correct the connections if necessary 2 If connections are correct please adjust the direction of the outdoor antenna point it towar
13. nal to amplify 3 Model Description This dualband model will improve cellular connections effectively It works at two frequencies at a time 850 and 1900 MHz and ensures perfect voice calls and 3G internet work It s suitable for most US cell phone providers such as Verizon AT amp T Mobility United States Cellular Corporation Sprint Nextel etc The dual band amplifier covers area of up to 250 m 2700 ft The model has the following advantageous features Full Kit The booster comes with two antennas two cables and mountings MCU control Digital booster software alarms errors and fixed system troubles automatically Auto Level Control Booster self adjusts input signal to specific environmental conditions Longer Battery Life Mobile devices don t have to search for signal with better coverage If you still suffer from poor network coverage don t hesitate and order MA250 CP dual band amplifier 4 Specification Indoor coverage 250 m peter re FREDENS PA mere i ies a en A ian EG t asso tiae nada men etaeotee branes i oe AAA Power supply AC110V 220V to DC 5V 3A a a a nas a en ee a ae PA 5 E E E E E re i ue io cules i 2 Ge 5 Repeater system overview Outdoor antenna g Mobile base station 3G USB modem Mobile Repeater Installation Scheme A repeater kit includes Outdoor Antenna Outdoor panel or wide band Yaggi is recommended Function To pick up ou
14. t the direction of the indoor antenna Check whether it is necessary to add one or more antennas to enhance the coverage in special areas 1 Move indoor antenna 2 Increase indoor antennas number 3 Reduce attenuation values 4 Increase output power 1 Move indoor antenna 2 Increase indoor antennas number 3 Reduce attenuation values 4 Increase output power For maximum precision in signal level testing switch your cell phone into Field Test Mode and see dB parameter The closer dB signal level to O the better cell phone reception you ll get e 105 to 100 Bad drop call e 99 to 90 Getting bad signal may break up e 89 to 80 OK shouldn t have problems but maybe e 79 to 65 Good e Over 65 Excellent Your task is to get at least 79dB signal to ensure reliable communication and strong signal inside the building Remark e Reduce attenuation values by ensuring the isolation level e 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 7 4 2 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 lt shall be caused by the insufficient isolation between outdoor and indoor antennas Please take the following measures Firstly check whether the alarm LED lights
15. t 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 where grounding clips are placed and give waterproof treatment to the feeder 6 3 Indoor antenna installation Correct antennas types shall be used according to the site conditions and the requirement 1 Omni antenna ceiling Omni or whip antenna shall be installed in the center and radiate all directions 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 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 7 Repeater Installation 7 1 Installation requirements 7 1 1 Installation Location Requirements The repeater shall be installed indoor in a cool dry and ventilated room without erosive gas or smoke or on a cool and ventilated wall to ensure excellent heat dissipation Installation height should be sufficient for RF cable wiring heat dissipation and maintenance Independent and stable power supply is necessary 7 1 2 Power requirement Genera
16. 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 aerials high voltage cables metal nets or transformers Never point the front of a Directional outdoor antenna towards the indoor antenna Plug the power supply into the Signal Booster input carefully to avoid damaging the center pin and then into a wall outlet ovn Note It is recommended to plug all AC power supplies for home electronics into a Surge Protector Power Strip 7 If the light indicator doesn t turn on please see the lights indication instructions 8 Using multiple Signal Boosters in one installation could cause interference to the base station except for the In Line Signal Boosters CORRECT INSTALLATION INCORRECT INSTALLATION Point antennas away from each other Never point antennas toward each other gt Outdoor ske Antenna Anona Renna lt mm I g AA Ww Wi 7 a _ 4 Signal Booster Signal Booster 7 2 2 Repeater s ports description 1 Outdoor port connected with the outdoor antenna by cable 2 Indoor port connected with indoor antenna directly or by cable 3 DC IN connected with power supply 7 2 3 Accessories selection Choosing accessories pay attention to the two characteristics frequency and impedance All accessories shall support the repeater s frequencies For example if the repeater s frequency is
17. tside 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 e Cables Coaxial cables for indoor and outdoor antennas e Mountings Special mountings for antennas and the booster depends on a booster model e Power Supply Optionally e Splitters or couplers when the building structure is too complicated or there is big loss due to thick walls or other reasons splitters or couplers shall be used so that more antennas can be installed in separate zones to distribute the signals to each corner of the coverage area e Additional indoor antennas when the building structure is too complicated 6 Antennas and Cables Setting Up 6 1 Outdoor antenna installation The repeater s main function is to improve weak RF signals in an area The formula is Input power Gain Output power The signal strength from an outdoor antenna directly affects the efficiency of the indoor coverage It is very important to choose the correct outdoor antenna location in order to get the best signal If you don t know exactly where your operator s base station is located go through the antenna aiming process for getting the best result To aim the antenna correctly follow the steps below 1 Setup the entire booster system including antennas
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