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850/1900MHz Band 5 Band 2 2G GSM Dual Band Cell Phone Signal Booster 72dB Wireless Repeater Amplifier with 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. Welcome you all to order.
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Frequency Range: Band 5, Band 2
Band 5: Uplink:824 ~ 849MHz Downlink: 869~ 894MHz                                                                                                                       

Band 2: Uplink:1850 ~ 1910MHz Downlink:1930 ~ 1990MHz
Max.Gain: Band 5: 64dB  Band 2: 72dB
Automatic shut down: When self – oscillate happened or attenuation value reaches 20dB, power supply is shut down.
I /O Port: SMA-Female
Dimensions: 115mm*68mm*16mm
Power Supply: Input AC100~240V 50/60Hz,output DC 5V


1. This booster only works for 850/1900MHz. 0-1 bar outside signal may not be suitable for using it.Before ordering,please check your local signal frequency by calling network operator or checking on some sites.
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.
2) To avoid interference, please make the distance of indoor and outdoor antenna more than 10 meters, let them not pointed at each other.


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.


1. 1 * 72dB Booster
2. 1 * Power Adapter
3. 1 * Mounting Screw Kit
4. 1 * English User Manual
5. 1 * 3dBi Indoor Whip Antenna
6. 1 * 6dBi Gain Outdoor Omni Directional Antenna with 50 Feet Cable


Before ordering:wrong frequency and only 1 bar or 0 bar outside signal may make booster not working. Please check related frequency sites or call network operator to make sure the right local frequency from base station.
Site to Check Australia Frequency:
Site to Check USA Frequency:
Site to Check Other Countries’  Frequency:
After Sale:If any problem with the booster, please contact  the customer service and we will try our best to solve


1. Three Months Free Replacement
2. 3 Years Manufacturer Warranty
3. Fast Handle time & Free Shipping
4. Support Wholesales,More Units More Discount

Average rating: 5.0
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