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GREETWIN 20dBm GSM850 LTE700 Dual Band Gsm Signal Booster
| Frequency Range | Uplink | Downlink | |||
| GSM 850 | 824-849MHz | 869-894MHz | |||
| LTE700 | 777-787MHz | 746-756MHz | |||
| Gain | 65dB±2dB | 70dB±2dB | |||
| Output Power | 17dBm±2dBm | 20dBm±2dBm | |||
| Bandwidth | Wide Band | ||||
| ALC | ≥ 20dB | ||||
| Ripple in Band | 8dB | ||||
| Noise Figure | ≤ 6dB | ||||
| VSWR | ≤ 2.0 | ||||
| Intermodulation Products | ≤ -40dBc | ||||
| Spurious Emission | 9KHz~1GHz | ≤ -36dBm/30KHz | |||
| 1~12.75GHz | ≤ -30dBm/30KHz | ||||
| Time Delay | ≤ 1.5 μs | ||||
| Frequency stability | ≤ 0.01ppm | ||||
| MTBF | > 50000 hours | ||||
| Impedance | 50Ω | ||||
| Power Supply | AC 100-240V,DC 6V/3A | ||||
| Power LED | Power indicator | ||||
| Alarm LED | Red | Self-oscillation or Strong input signal | |||
| Green | Normal | ||||
| Mechanical Specification | |||||
| RF Connector | N-Female | ||||
| Cooling | Heatsink Convection cooling | ||||
| Humidity | < 90% | ||||
| Operating Temperature | -10°C ~ +55°C | ||||
| Environment Conditions | IP40(Indoor) | ||||
| Installation Type | Wall Installation | ||||
| Size | 117*90*34mm | ||||
| Gross Weight | < 1.2 Kg | ||||




Description:
Dome Antennas are more popular because they project signal in all directions. Therefore, they are good for mounting on ceilings in central locations to project reception in 360 degrees fashion covering large square spaces.
Panel Antennas project signal in single direction. Therefore, they are good for installing on walls to cover rectangular areas like long corridors. They can be installed on ceilings to boost reception over multiple floors as they project reception downwards across multiple floors.
How does a signal booster work ?
Firstly, the cell phone reception is captured by the outside antenna. It is then amplified by the cellular repeater and rebroadcasted across the building or car through the inside antenna. The result is a boosted cell phone reception that culminates in more bars in your phone even in the remotest of places. You can then enjoy clearer calls (you won’t drop calls again) and faster internet browsing and rapid data downloads and uploads. This is how the cellphone signal booster works in your car or house. This is how all signal boosters work on all technology platform networks.
Introduction:
Signal Booster is designed to enhance and improve the quality of mobile 2G GSM900 connection. There’re black and white colors for options. The Led Indicator will show the current level of the input signal, which simplifies the installation of the external antenna. High quality aluminum shell provides an optimal cooling. This model, as simple in connection, installation and configuration, does not require special skills.
Fearures:
1. Coverage up to 400 m²
2. ALC Function
3. Simple in connection and installation
4. An optimal cooling with aluminum shell
5. Led indicators show working status and ISO alarm.
Support any cellular devices (voice & data & video).
Application:

Installation:
The booster is fixed onto the wall through expansion bolts.
A. Drill holes on the targeted place and install expansion bolts.
B. Align the holes with the expansion bolts, place flat washers, spring washers, and nuts in turn, and tighten the nuts to fasten the installing support.
C. Place the booster on and fasten it.
D. Connect cables and power cables to the booster respectively.
E. After installing the booster as described above, power on the booster to check the operation status.
Connection:
A. BTS Port: donor antenna cable is connected with Outdoor Port;
B. MS Port: service whip antenna is connected with Indoor Port;
C. DC IN: connected with Power adaptor.

Q1. Why is there still no signal after installing the equipment?
1. Check the power on booster and power supply.
2. Check the connector of outdoor antenna is tight or not.
3. Check the connectors of RF cable are tight or not.
4. Check the outdoor signal is strong enough or not.
5. Check to make sure the antenna is installed correctly.
6. Check the connector of indoor antenna is tight or not.
7. Check the cable type is suitable or not.
Q2. Why the signal strength is too weak on the edge of area?
1. Check the outdoor signal and antenna direction.
2. Check booster is full gain or not.
3. Check all of the connectors are tight.
4. Change the location of outdoor/indoor antenna.
5. Check the cable type is suitable or not.
6. Deploy more indoor antennas.
Q3. After running booster, why the signals are not stable?
1. Checking the distance between donor antenna and server antenna are too close to each other? Check LED
of booster to make sure alarms are green.
2. Checking the signals from donor antenna whether to be stable or not?
3. Connect the system again if it is incorrect connection.
Q4. Why the booster power LED is not bright?
1. Checking the input AC power range indicated on power adapter whether is corresponding to the local
power system.
2. Checking the power adapter whether connect the equipment correctly and stably or not.
3. Checking the power adapter whether damage or not. To test output voltage whether be corresponding to
that indicated on power adapter or not by multimeter
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