| Customization: | Available |
|---|---|
| Type: | Signal Repeater |
| Transmission Medium: | Wireless |
|
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Dual band 23dBm wireless cellular signal amplifier cell phone amplifier booster signal booster 900 1800
Model:GW-23GD
Specifications:
| Frequency | Uplink | Downlink | |
| GSM900 | DCS1800 | 890 - 915/1710 - 1785MHz | 935 -960/1805-1880MHz |
| Operation Bandwidth | Wide Band | ||
| Gain | ≥70dB | ≥75dB | |
| Output Power | ≥18dBm | ≥23dBm | |
| MGC (Manual Gain Control) | 31dB Range/1dB step | ||
| Ripple in Band | 8dB | ||
| Noise Figure | ≤ 6dB | ||
| VSWR | ≤2.0 | ||
| Automatic Level Control | ≥20dB | ||
| Intermodulation Products | ≤ -40dBc | ||
| Spurious Emission | 9KHz~1GHz | ≤ -36dBm/30KHz | |
| 1GHz~12.75GHz | ≤ -30dBm/30KHz | ||
| Frequency stability | ≤ 0.01ppm | ||
| MTBF | > 50000 hours | ||
| Time Delay | ≤1.5μs | ||
| Impedance | 50Ω | ||
| Power Supply | Input: AC 110~240V; Output: DC 9V/5A | ||
| LED Alarm | Power LED | DC ON/OFF | |
| Smart LED | Smart function ON/OFF | ||
| AGC Alarm | Alarm RED when ALC 5dB-10dB | ||
| ISO Alarm | Alarm RED when ALC 15dB-20dB, Then Repeater will Auto Shut Down. Auto restart after two minutes. | ||
| Mechanical Specification | |||
| RF Connector | N-Female | ||
| Power Consumption | 25W | ||
| Operating Temperature | -10ºC~ +55ºC | ||
| Environment Conditions | IP40(Indoor) | ||
| Installation Type | Wall Installation | ||
| Dimensions (D x W x H ) | 228*170*65mm | ||
| Weight | ≤ 3.5 KG | ||
Description:
The signal amplifier of the mobile phone is composed of an antenna, a radio frequency duplexer, a low noise amplifier, a mixer, an attenuator, a filter, a power amplifier, and the like, and a downlink amplifying carrier. The basic principle of its work is: use the forward antenna (donor antenna) to receive the downlink signal of the base station into the repeater, amplify the useful signal through the low noise amplifier, suppress the noise signal in the signal, and improve the signal to noise ratio (S / N After being down-converted to the intermediate frequency signal, filtered by the filter, amplified by the intermediate frequency, then frequency-shifted up to the RF, amplified by the power amplifier, transmitted by the backward antenna (retransmission antenna) to the mobile station; The uplink signal of the mobile station is received, and is amplified by the uplink along the opposite path: that is, by the low noise amplifier, the down converter, the filter, the intermediate amplifier, the upconverter, and the power amplifier are retransmitted to the base station. Thereby achieving two-way communication between the substrate and the mobile station.
The LCD Repeater covers all existing wireless public communications networks:
GSM900&DCS1800
The LCD Repeaters have many intelligent functions: such as antenna isolation detection, Input & Output signal strength indication, system indication, manual gain control and smart mode. See the detailed introduction listed below:
The Display will auto-off if don't touch it in one minute.
1. "GREETWIN" is Company LOGO.
2. Power: Power supply with indicator.
3. Smart: Smart function with indicator. AUTO Mode now.
4. M: "AUTO" switch to "MANU".
5. Sel: Select the working systems,
long press the button for 2s, will enter into 900M. then setting the gain.
then set the gain 65dB, long press the button for 2s again. 65dB was confirmed.
6. 900MHz: Show the current working system. Press "Sel" to change to the different systems for operation.
7. AUTO/MANU: Automatic Mode or Manual gain Mode.
8. AGC: Automatic gain control with indicator.
9. ISO: Isolation inspection with indicator.
10. 63dB/68dB: gain of the working system.
11. 0dBm/0dBm: outpower of the working system.
12. UL is Uplink, DL is the downlink. "+" is increasing the gain, "-" is decreasing the gain.
Features:
1. Isolation Inspection. When the first power on the repeater, the device will automatically detect the isolation between the donor antenna and the service antenna. The users could easier see the status and make the adjustment accordingly.
2. Input&Output Signal Strength Indication. The specific number of uplinks and downlinks measured in Output Power(dBm). Easy for users' understanding.
3. Manual Gain Adjustment. The users or engineers could reduce the gain of the repeater manually via the buttons below the screen. The uplink and downlink gain could be set independently. "+" is increasing the gain, "-" is decreasing the gain.
4. Automatic Gain Control. Automatic Gain Control (AGC) is a dynamic gain adjustment feature with a 31dB range.
5. Smart Mode = AUTO Mode. The repeater could automatically change the gain according to the specific environment when the smart function is on. Please note that when the SMART is on, users could not able to set the gain manually. Gain reduce 31dB automatically at first, then AGC Alarm RED when AGC control 5dB-10dB, ISO Alarm RED when AGC control 20dB-25dB, Repeater will Auto Shut Down. Auto restart after two minutes.
6. MANU Mode, users can set the gain manually. AGC Alarm RED when AGC control 5dB-10dB ;
ISO Alarm RED when AGC control 20dB-25dB, Repeater will Auto Shut Down.
Auto restart after two minutes.
7. Auto Shut Down = ISO. Auto Shut Down is a stage that temporarily stops the RF function. If the input power reduces to a safe range for the repeater to operate, the software would power the repeater back on and restore all functions promptly. However, if the input power remains too great and dangerous for the network, it will then shut down completely. In such a case, the signal is too strong for the usage of the repeater.
Applications:
1) Donor antenna: Recommend to use wideband panel antenna (7~14dBi gain) or Yagi antenna, better to use an antenna with good direction, high gain, and decoration shall be considered if it is in urban areas.
2) Role: It picks up signals from the tower, and sends it to the booster through cables, at the same time, it transmits the amplified mobile signals from the booster to the tower.
3) Server antenna: Recommend to use indoor Omni or panel antenna. Indoor Omni is suitable for wide-open areas where the signals can be radiated from the center to the surroundings, while the indoor panel is suitable for those narrow and long areas, like tunnels, corridors, elevators, etc.
4) Cables: 5D-FB or 7D-FB coaxial cables.
5) Power supply: Booster power adapter, a desktop standard. Usually directly connected to a power outlet. But preferably equipped with an air switch, groundings, sometimes a surge arrestor shall be connected.
FAQ:
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 the 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 the 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 the area?
1. Check the outdoor signal and antenna direction.
2. Check booster is the full gain or not.
3. Check all of the connectors are tight.
4. Change the location of the outdoor/indoor antenna.
5. Check the cable type is suitable or not.
6. Deploy more indoor antennas.
Q3. After running a booster, why the signals are not stable?
1. Checking the distance between donor antenna and server antenna is too close to each other? Check LED
of a 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 an incorrect connection.
Q4. Why the booster power LED is not bright?
1. Checking the input AC power range indicated on the 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 a power adapter or not by the multimeter.
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