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Item specifics
  • Brand Name: Kan.Do
  • Model Number: 990 GSM 2W
  • color: silver
Product Description
"Any dispute / Direct negative feedback"  before contact means "Buyer Rubbish " !! 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. Buy correct cable and anteana ,50ohm cable is recommended ,RG58 not recommended , for DCS ,3G,4G you must use 50Ohm cable ;
4. Install them correctly to avoid interference ( auto osillation ) with walls between indoor & outdoor antenna, when interference exist ,LCD will display full signal bar or signal LED normal on, but phone can not make call .

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



Selling point of product :

1. Booster for GSM ;
2. Boster for 900Mhz ;
3.
3000 squre meters suitable;
4. Gain:7
5DB  ;
5. 2
W ;
6. LCD display to show signal strengthness received 
7. Free   shipping 

 

Signal booster for GSM900 . 3000 square meters max. supported.



Back cover , wave design for better ventilation :

LCD display function :


Parameters : 

Host :
Operating voltage: AC 110V-220V automatic power adjustment


Operating frequency range:  
GSM :           890MHz---915MHz(Uplink)  ;       935MHz---960MHz(Downlink )


Gain:  ≥70dB ( uplink ) ; ≥75 ( downlink )
Flatness: ≤ 3dB
Noise figure: ≤ 3dB 
In wave ratio: ≤ 1.4 (V.S.W.R)
Device delay: 1μs
Spurious Radiation: ≤-39dBm

Power: 34dbm ( equal to 2 W ) 
Size (H x W x D): 22x18.5x 4.6cm
Netweight : 1.9kg  around

Cover :3000 square meters max. to cover in open air ( also it will be different according to your using condition ) ,

Note:
This product have only power adaptor . Does not come with any accessories of cable , connectors and antennas . You need to buy extraly.

 

 

Applications :
The amplifier small, practical, mainly for small customers, family, hotel, hotels, basements, car parks, offices and other occasions. Signal strength, simple to install mobile phone signal amplifier is the most prominent feature of the various properties of this amplifier repeater close to large professional standards, a variety of indicators and technical indicators are considered expansion of the international advanced level, in considering the ultra-high performance while also consider the low price. 

 

 

 

 

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 outdoor antenna far away from booster and indoor antenna ;
2). Face outdoor and indoor antenna to different direction;
3). Get one or 2 walls between outdoor antenna and indoor antenna to ensure they are 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 ) .


Detailed problems and solutions  :


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

 

 

Below model for GSM900mhz 2G network ( 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 ) ,


http://www.aliexpress.com/store/product/digital-display-gain-65dbi-Auto-Gain-Control-GSM-booster-GSM-repeater-900mhz-booster-mobile-phone-repeater/601777_2031233344.html

 

http://www.aliexpress.com/store/product/digital-display-gain-65dbi-Auto-Gain-Control-GSM-booster-GSM-repeater-900mhz-booster-mobile-phone-repeater/601777_2031271457.html

 


http://www.aliexpress.com/store/product/Auto-Gain-Control-GSM-booster-digital-display-gain-65dbi-GSM-repeater-GSM-900mhz-booster-kits-w/601777_2031465046.html

 


http://www.aliexpress.com/store/product/Auto-Gain-Control-GSM-booster-digital-display-gain-65dbi-GSM-repeater-hone-booster-repeater-w-9/601777_2031466146.html

http://www.aliexpress.com/store/product/Auto-Gain-Control-GSM-booster-digital-display-gain-65dbi-GSM-repeater-mobile-phone-repeater-w-9/601777_2031464919.html

 


http://www.aliexpress.com/store/product/digital-display-gain-65dbi-Auto-Gain-Control-GSM-booster-GSM-repeater-mobile-phone-repeater-w-yagi/601777_2031271870.html

 


http://www.aliexpress.com/store/product/Auto-Gain-Control-GSM-booster-digital-display-gain-65dbi-GSM-repeater-mobile-phone-repeater-w-yagi/601777_2031451606.html


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 .



 

Packaging Details
  • Unit Type: piece
  • Package Weight: 2.0kg (4.41lb.)
  • Package Size: 12cm x 12cm x 12cm (4.72in x 4.72in x 4.72in)
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Packaging Details
  • Unit Type: piece
  • Package Weight: 2.0kg (4.41lb.)
  • Package Size: 12cm x 12cm x 12cm (4.72in x 4.72in x 4.72in)
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