Installation reference video
900 1800 2100 triple band signal amplifier
This signal booster can boost call voice, 3g network and 4g network in most countries in Europe and Asia, such as Russia, Spain, Ukraine, Israel, France, Pakistan, etc.
Note: There are two types of labels for this signal amplifier. But they are the same product, both of them can amplify 2g 3g 4g.
![](https://ae01.alicdn.com/kf/See8b018635ea443c86ad7d17c91a3b3b5.jpg)
Local Return Service
If you find the signal booster can`t work for you, please feel free to activate the local return service. You will get a full refund after you return the product to the AliExpress warehouse in your country. The service is available for some countries, such as Russia, Israel, Spain, France, Italy, etc.
Frequency bands of operators in major countries
Check the frequency band before you buy
To make sure the amplifier you buy is suitable for your mobile operator, please follow the steps and detect the frequency band of your mobile phone. This signal booster can only work on Band 8, Band 3 and Band 1.
Band 8 = B8 = 2G GSM900 / 3G UMTS900
Band 1 = B1 = 3G WCDMA2100 / 4G LTE2100
Band 3 = B3 = 2G GSM1800 / 4G LTE1800
Specification:
Repeater:
[1]Gain: 70dB (DL) ; 65dB(UL)
[2]Output power:20dBm
[3] GSM: up link 890-915mhz; down link 935-960mhz
DCS: up link 1710-1785mhz; down link 1805-1880mhz
WCDMA: up link 1920-1980mhz; down link 2110-2170mhz
[4]Impedance: 50ohm
[5]Connector Type: N female connector
Installation
Easy Setup in 4 easy steps!
[ 1 ] Mount the External Antenna where you have the strongest cell phone signal, typically on a roof or in an attic.
[ 2 ] Connect the internal antenna to the Amplifier Base Unit and place where you need improved signal. Indoor antenna should connect "MS" end of Amplifier. There should be a minimum of 2 vertical meters of separation between the Base Unit and External Antenna.
[ 3 ] Run the coax cable (13 meters) between the Base Unit and External Antenna. External antenna should connect with "BTS" end of repeater.
[ 4 ] Connect the power supply to the Amplifier Base Unit and plug into a power outlet and you are done!