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17dBm 850MHz Signal Booster Vehicle Use AGC ALC

Vehicle Use Mini Signal Booster CDMA850 Single band Signal Booster Signal Repeater ST850AI What is the booster? A mobile signal repeater provides the ultimate solution in any area where cellular communications can not work well due to leak of signals.  The repeater device features easy installation & operation,Website:, build-in indoor antenna and no interference.  It could also improve indoor electromagnetism environments, protract cellular battery life and reduce radiation of cells.  A mobile repeater is ideal for house, home, office use. How Booster/Repeater Works? Repeaters are designed to fulfill the idea of one and main principle: to fill the areas with the weak or bad signal and to amplify these low signals in order to provide you with the communication suitable for you. ST850AI mobile signal booster specification Frequency range GSM 824-849 869~894MHz output Up link :15dBm Downlink: 17dBm Gain Up link: Gp≥65dB Downlink: Gp≥68dB Noise figure ≤6dB Ambient temperature -15°C~55°C Size/weight 130*95*28MM/600g Function AGC/ALC I/O impedence 50Ω/N connector Transmission delay ≤0.5μs Power supply AC/220V±10%   45~55Hz Coverage area 300sqm Terms and Conditions Certificate CE/RoHs Country of Origin China Port of Dispatch Shenzhen Production Capacity 1000pcs/month Date of Delivery Within 3 days after received payment inform MOQ 10pcs Warranty 2years Pacakge 1pcs/box; 20pcs/carton Country of Origin China How can repeater bring your mobile better signal?  The outside antenna catches low signal from operator servicer’s base station and delivers it to cell repeater through the connection cable (coax). After the signal is accepted by the mobile repeater, this device amplifies it. Then this amplified signal goes through the connection cable (coax) to the inside antenna. And after that, the amplified signal transmits to your cell . Finally, your cell will get good signal, never on and off Mobile Phone signal Booster Installation complete kit items 1-Outdoor antenna log periodic antenna(or wall mounted, yagi antenna) 2-Indoor Omni ceiling antenna( panel antenna)  3-Power adapter  4-User manual 5-Cell repeater 6-10 meters outdoor cable and 5 meter indoor cable  Steps for Installation   1.Mount the Outdoor Antenna. Choose a location for the Outdoor Antenna using your cell to determine the area of strongest signal. For example, on window or on roof. 2.Mount the Booster. Choose a place the Booster where you want to create a Cell Zone. 3.Use the coaxial cable to connect between the outdoor Antenna and the Booster. 4.Mount the indoor Antenna. Choose a place indoor Antenna where you need signal. 5.Use the coaxial cable to connect between the Booster and the indoor Antenna. 6.Connect the Booster to the provided power supply and plug into a power outlet. Signal problem & installation technique supporting 1.If still weak signal receipt after installation, please check if outdoor antenna point to signal tower correctlyor elsewhere has stronger signal and confirm signal strength achieve-70DBM.  2.If still have no signal after installation, please check our device power adapter whether connected perfectly? And connectors connect well. 3.If strength is not steady, please check if outdoor and indoor antenna is too close; please ensure outdoor antenna has distance of 10 meters at least, with a barrier and not in a same horizontal line.    4.Packed the outdoor connector by waterproof glue, otherwise wet reduce the signal cover area. Features 1.ALC ensure output level stable and adjustable continuously. AGC Auto Gain Control function help signal booster work more stable ; 2.Increases indoor signal coverage-up to 300 sqm. 3.Supports multiple users simultaneously. 4.LED indicate and judge to signal level of uplink and downlink.  5.Decreases dropped or missed calls. 6.Full-Duplex Communication Mode. 7.Easy to set up – comes complete with everything you need. 8.Extends battery life (uses less power when signal is stronger). 9.CE authentication certificated. LED Indicates LED Status Definition Power Red Normal Off DC power problem DL(Downlink) White No signal received Solution: Adjust the outdoor installation to get sound signal(see page 14) Green Signal received ok but not perfect Solution: Adjust the outdoor installation to get sound signal(see page 14) Red Full signal received UP(Uplink)) Flicker When there is a call, it is normal Green Always green means self-excited Solution: Turn off the booster, adjust the indoor and outdoor antenna again, and try to expand the distance or create some barriers between them.


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