For Russia car booster 3G 2100Mhz mobile phone signal booster for car,LCD display WCDMA 2100mhz signal repeater 3G for vehicle-in Signal Boosters from Cellphones & Telecommunications

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For Russia car booster 3G 2100Mhz mobile phone signal booster for car,LCD display WCDMA 2100mhz signal repeater 3G for vehicle Details & Specification :

Item Specifications
Brand Name Kan.Do
Model Number SB-39 3G RU
Place of Origin Guangdong, China (Mainland)
is_customized Yes

"Any dispute / Direct negative feedback"  before contact means "Buyer bad" !! And not welcome such buyer !! Please go away !! ( Because business is cooperation ,not fight each other ) .

If protection time is running over ,please contact to extend time ,
if any problem found ,please contact to solve by a friendly way .

******Important Note ( please read , and please read all descriptions carefully ) ************:
To let a booster work it needs conditions :

1. please be sure that signal outside of your house is good enough to enable booster to work , what good signal is:

a). stand there to check if you can make fluent call or not,if can ,then you buy ,otherwise please dont buy ;
b). Put your phone there to check its signal strengthness :
Android : setting-about phone-status-network ,dbm display shall be at -60dbm to -75dbm around ;
IOS : dial *3001#12345#*, dbm display shall be at -60dbm to -75dbm around ;

-80dbm to -100dbm means bad,so please dont buy

2. Please be sure the place where you are going to install is GSM900MHZ ,operator also use DCS1800mhz for 2G network, please check to clarify .

3.  ( important )   Install them correctly to avoid interference ( auto osillation ), when interference exist , signal LED will be normal on,but phone can not make call or no signal displayed on phone, for small cars ,it is a big problem to solve  .  Many buyers meet this problem , and can not solve it well

For avoiding unhappiness ,please do not buy before you are clear about the above .


Selling point of product :

1. Signal booster for car
2. 3G WCDMA  2100mhz ;
3. Car signal booster kits ;
4. With antenna;


When you need a booster for car ??

If your car is well hermetical ,or windows sticked with shielding film that jammer phone signal , very weak signal in car and not ok to make calls . So you need this !!!!But if you drive in a bad signal area such as basement , this booster will not help too.


Application Scope:
Car , truck, car house and so on .

 Content :
1x booster ;
1x outdoor antenna with   cable with N or SMA connector ;
1x indoor antenna sticker with  cable with N or SMA connector
1x 12V car charger with 1.3 meter cable
2x N connector - SMA ( if cable comes with N connector ,then this is not available


A : Booster

Voltage :  110-220V AC to DC5V 1A
Frequency range   : 

              1930MHZ--1990MHZ  (uplink)
2110MHZ--2180 MHZ (downlink)

Gain :    

Uplink ≥60dBi         Donwlink ≥61dbi
Output power :  
                          Uplink:   20dbm

                         Donwlink :20dbm      

Outdoor signal strength request for outdoor antenna: at least -55dbm around ;
If you can have a android phone ,you can use it to test your signal strengthness as below :


For this product ,it will request signal strengthness not higher than -55dbm , if your signal strenght is worse to -55dbm ,it may work not good for you or not amplify signal for you .


PS.: -65 ,-70 and -80 dbm is worse signal than -60dbm ,-55dbm is better signal than -60dbm .

Impedance : 50Ω  ;
Seclusion  : >70db
Ambient temperature:-10oC--50oC
power:   5V/ 1A

TIM20170703213006 TIM20170703213027 TIM20170703213108 TIM20170703213128 TIM20170703213144
IGC and ALC function is not activated even it is shown in above lcd display  picture .



B.  Outdoor Antenna :

1. Frequency:800-2170Mhz
2. Cable length: 3 meter

3. Gain:5dBi ( factory data is 5dBi , actual maybe 3 only )
4.  Seclusion:≤1.5
5.  Impendance:50 Ω
6.  Antenna height : 30cm ( reference only,maybe a little difference with the real ) 



C . Indoor Antenna : 

Built-in antenna ( as shown in title picture , the white one )  ;
3 dbi ;
Antenna Length :10 cm around ;
Cable length : 3 meters 


D: Car charger :
5V 2A  ;
Length :3Meter around


Installation reference :




Note :
1. If your car or truck is empty and no obstacle ,  normally recommend for 10square meters normally in open space .
2. If you drive in a area where is bad signal outside of car , the products will not work for you too .




Problems and solutions ( important ) , please read :

All booster will be tested before shipping to ensure quality , if you dont know any about booster and installation please start from 0 as below .

1. After power connected ,if LCD does not display or power LED is not on ,it means booster is defective ,kindly choose a friendly to solve it ,we accept to reship or refund. Andy dispute or negative will cause you on black list and an uncooperative solution ;

2. After you connet cables and antenna onto booster ,Lcd display 1-3 bars, you need to change your external antenna to a better place to gain stronger signal, if you use small pin antenna ,please upgrade it to a panel or a yagi ; If you can not find a place with good signal to enable booster with full bar display ,it means your outdoor signal is too bad ,booster will not work . So please kindly contact for a solution to return .


3.  After you connet cables and antenna onto booster ,Lcd display full bar or signal LED is on ,but phone can not make call , it means big interference ( not booster quality problem ) which cause booster dead called auto osillation , so you need ( indoor and outdoor antenna can not see each other ) :
   1).  Use longer cable to enable external antenna far away from booster and indoor antenna ;
   2).  Face external and internal antenna to different direction;
   3).  Close widows or door to ensure both antennas well insulated .
   4).  Check with your operator to ask what frequency are adopted in your area to ensure your booster matchs ( operator will use 900mhz in some area and use 1800mhz in an other area ) .

If you still can not solve it yourself , you can friendly talk choose return or refund,
any dispute or negative mean buyer bad !!



Below model ( IGC and ALC function ) may work under conditions : 
1. bad outdoor signal at -80dbi to -85dbi around ;
2. No need wall to 100% insulate indoor and outdoor ( but if both antennas are too close ,it will not work too ) ,














Above models is only possible to work if outdoor signal is not good (-80dbm) ,does not mean 100% to work if really bad outdoor signal ( because a booster will take many conditions ) .

When you buy them it means that you just want to take try ,if does not work ,please be friendly to solve. If you are going to direct dispute or negative, please dont buy .