| Type: | Signal Repeater |
|---|---|
| Transmission Medium: | Wireless |
| Standard: | Standard |
| Lightning Protection: | With Lightning Protection |
| Certification: | ISO, RoHS, CE |
| Condition: | New |
| Samples: |
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| Customization: |
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Audited Supplier 23dBm Dual Band GSM/Dcs Cellular Amplifier 900/1800MHz 2G 3G 4G Signal Repeater Booster
A cell phone signal booster (also known as amplifier or repeater) is made up of three main elements - exterior antenna, amplifier, and interior antenna. They form a wireless system to boost cellular reception.
A cell phone reception booster is generally a repeater system that involves the amplifier adding gain or power to the reception in various directions. Even for a cheap cell phone signal booster, maximum gain differs by application. The work of an outside antenna is to both receive and transmit signals to a cellular tower with enhanced power and sensitivity. Usually, the dB gain is never below 7 dB and can be over 10 dB gain. The system's elements conduit is the coaxial cable. It is also a factor in transmission loss.
The main aim of the cellular phone signal booster is taking the existing cell phone signal around your car, office, workstation or home and amplifying it. After amplification, the signal is rebroadcasted to the area with no reception or weak signal. Apart from consisting of an amplifier to boost the reception, external antenna and internal antenna, there're cell phone boosters with indoor antenna and amplifier as a single unit making them superb indoor cell phone signal boosters. In most cases, the three components are detached. Other optional components include the Attenuator (reduces unwanted frequency signals), Lightning Surge Protector, Splitter, and Tap.
Production Information
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.
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 | ||
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.
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.
Q1. Could I get a sample before bulk order?
Yes, we offer the sample for all models but charged.
Q2. What should I do if I don't know about frequency in my country?
Please feel free to contact us with your inquiry, we will find the frequency you need and address your problems.
Q3. Do you accept OEM/ODM order?
Yes, we can customize the brand logo, colors, and frequencies.
Q4.Shipment Date
| Sample | 3-5 business days |
| <20 pcs | 7-15 days |
| 20-50 pcs | 15-24 days |
| >50 pcs | Negotiate |
| USA/Canada/Europe/Asia | 3-5 days |
| Middle East/Latin American | 5-7 days |
| African | 3-7 days |
Q6.Payment Method
T/T, Western Union, Paypal, and Credit Card are available,
but we suggest paying by Alibaba Trade Assurance, the most favor, and security method.
*Other methods please contact us with more details.
Q7.Others
(1)Frequency
We can customize Single/Double/Triple/Quand/Penta Band for cellphone signal like 2G/3G/4G(GSM/CDMA/DCS/PCS/WCDMA/LTE, etc,)
(2)Output Power &Coverage Areas
| Output Power | Coverage Areas |
| 20dBm | 500-1500m² |
| 23dBm | 1500-2500m² |
| 25dBm | 2500-4000m² |
| 27dBm | 3000-5000m² |
| 30dBm | 5000-8000m² |
*Coverage is related to local signal strength, please contact us with your local condition, we can offer the best solution.
(3)Antenna
Cellphone signal booster must attach one indoor antenna and one outdoor antenna by two coaxial cables.
Website's price only includes a signal booster, please contact us if you need one set of devices with antenna, splitter, and coupler.
Suppliers with verified business licenses
Audited Supplier 
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