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Band 8 900MHz 2G EGSM Band 1 3G WCDMA 2100MHz Mobile Phone Signal Booster Voice 65dB Gain Repeater Amplifier with Yagi Antenna

Phonetone booster provides a rapid and perfect solution to solve and optimize the weak signal of houses, offices, hotels, elevators, underground parking lots and other small weak signal area.
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Working principle:
The outdoor antenna receives the signal from the nearest mobile base station and sends the signal through the coax cable to the installed Repeater. The booster can amplify the signal,then the amplified signal is sent to the indoor antenna,the indoor antenna can transmit the signal into your house,so you can enjoy clearer phone call or faster mobile date inside your house.  
1)Wide Input Voltage:
Input DC Voltage Range 5-15V
2) Self-oscillation Elimination:
The system detects self-oscillation, first reduces the link gain, then detects the loop, and finds that the self- oscillation is eliminated, the system returns to normal working state, otherwise, the power is turned off to prevent interference signal.
3) Inactivity Mode:
When no user calls, the device works in standby mode, the uplink power amplifier is switched off, and the static power is decreased by 30%, so as to achieve the purpose of energy saving.
4)AGC (Automatic Gain Control):
When the downlink output signal is too strong or self-oscillated, the uplink and downlink can automatically reduce the gain and reduce the interference signal.
5)Automatic Power Shut-down:
When the self-oscillation happens, and the link attenuation value reaches 20dB, the MCU sends out the instruction and shut-down the PA.
6) ALC(Automatic Level Control):
Automatically adjust the output gain down to optimal figure while the output gain is above the optimal figure by the ALC circuit, this can greatly optimize the calling quality, data transfer quality, avoid the signal self- oscillation, and also very much reduce the interference to the cell tower, even if your house is very close from the cell tower, you don't need to worry about the interference and the trouble caused.


Electrical specification



Frequency Range

EGSM Band 8

880 ~ 915 MHz

925 ~ 960 MHz


WCDMA Band 1

1920 ~ 1980 MHz

2110 ~ 2170 MHz

Max .Gain

≤ 60dB

≤ 65dB

Max. Output power



Gain Flatness


Automatic Gain Control


Automatic shut down

When self–oscillation occurs or attenuation value reaches 20dB, the corresponding link power supply is shut down.

Spurious Emission


≦-36dBm @ 3KHz



≦-30dBm @ 3KHz

Noise Figure




Group Delay


LED Indicator


LED Indicator





Self-oscillation occurs and the corresponding link is automatically closed

Mechanical Specifications




I /O Port




Operating Temperature


Environment Conditions






Power Supply

Input AC100~240V 50/60Hz,output DC 5V

1. Three Months Free Replacement
2. 3 Years Manufacturer Warranty
3. Fast Handle time & Free Shipping
4. Support Wholesales,More Units More Discount
1. Significantly improves voice and data quality
2. Greatly reduces disconnects and drops call
3. Works wirelessly with multiple cell phones and data cards simultaneously
4. Receives and transmits better than your cell phone
5. Extends cell phone battery life
6. Easy to install and operation
1*900/2100MHz Dual Band Repeater
1*6/8dBi Indoor Panel Antenna with 5ft Coaxial Cable
1*9dBi Outdoor Yagi Antenna with 50ft Coaxial Cable
4*Screws for Mounting
1*AC Adapter
1. This booster works for 900/2100MHz . 0-1 bar outside signal may not be suitable for using it.Before ordering,please check your local signal frequency.
2. For installation, you are supposed to pay attention to the following points:
1) There is seperate wall between indoor and outdoor antennas to make two antenna signal not interfere with each other.
3. To avoid interference, please make the distance of indoor and outdoor antenna more than 10 meters, let them not pointed at each other. 
Average rating: 5.0
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