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Dual Band Band 5 850MHz Band 3 1800MHz Cell Phone Signal Booster 45dB 2G 3G 4G LTE Cellular Repeater Amplifier for Car Truck RV

Phonetone booster provides a rapid and perfect solution to solve and optimize the weak signal of houses, offices, hotels, elevators, parking lots and other small weak signal area. Welcome you all to order.
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1.30 Days Customer Satisfaction
2.Three Months Free Replacement
3.2 Years Manufacturer Warranty
4.Fast Handle time Fast Shipping
5.This product with CE FCC Approved


This 45dB Mobile Cell Phone Signal Booster is designed to boost multiple users with maximum power. It is best used in the following applications:

1. Car;
2. Truck/RV/Boat

Key Feature:

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 Uplink Downlink
cellularBand 5 824~849MHz 869~894MHz
DCS (Band 3) 1710~1785MHz 1805~1880MHz
Max .Gain 45dB 45dB
Max. Output power 20dBm 10dBm
Gain Flatness 10dB(P-P)
Automatic Gain Control 20dB
Automatic shut down When self–oscillation happen or attenuation value reaches 20dB, power supply is shut down
9KHz~1GHz -36dBm @ 3KHz
1GHz~12.75GHz -30dBm @ 3KHz
Noise Figure 8dB
VSWR 1.8
Group Delay 1.5μs
Continuous GREEN @normal
Twinkly GREEN @input signals may be not enough.
Continuous YELLOW @ stronger input signals, AGC is working
Twinkly YELLOW@ self–oscillation happen ,AGC is workingthe attenuation value is more than 12dB . 
Continuous RED@ power supply is shut down.
Mechanical  Specifications
I /O Port
Operating Temperature
Environment Conditions
Power Supply
Input AC100~240V 50/60Hzoutput DC 5V


Package Includes:
1 * 45dB Car Use Repeater
1 * 3dBi Gain Outside Magnetic Mounted Antenna
1 * 3dBi Gain Inside Patch Mounted Antenna
1 * Cigarette Lighter Adapter
2 * Velcro for Mounting
1 * English User Manual


1:this item is 850/1800MHz, please confirm your mobile frequency is 850/1800MHz before you buy this item.
2:This item is suitable for using in the car.

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