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70dB Gain 2G 3G Dual Band Signal Booster Cell Phone Amplifier

Basic Properties
Place of Origin: China
Brand Name: ATNJ
Certification: CE,ROHS, CCC, TUV, BV, ISO
Model Number: JS-DB900/2100
Trading Properties
Minimum Order Quantity: 5Pcs
Price: USD+110---120+kit
Payment Terms: T/T, Western Union,Paypal,Alibaba,Bank transfering.
Supply Ability: 1000+unit+per day.
Specifications
Frequency 900MHz Range: 890-915MHz/935-960MHz Frequency 2100MHz Range: 1920-1980MHz/2110-2170MHz
Device Gain: 65-70dB Output power: 17dBm±3
Color: Gold,Black,White Or Customized AGC Intelligent function: Done,31dB @ 1dB/ Step
MGC、ALC Intelligent function: Done Antenna: Log-period Antenna+Ceiling Antenna
Cable Length: 5M+20M Products type: Cellular Amplifier, Mobile Signal Booster India
High Light:

915MHz Dual Band Signal Booster

,

1980MHz Dual Band Booster

,

TUV Dual Band Signal Booster

Product Description

 

70dB Gain 2G 3G Dual Band 900MHz 2100MHz Cellular Cell Phone Amplifier
 
  Mobile signal repeater is a device that gathers the signal from the air, usually through an outdoor unit (such as an antenna), and “conveys” this signal to an indoor unit that is supposed to boost the signal. This conveying is done through a wired connection between the outdoor antenna and the indoor unit. The indoor cell phone booster, in turn, is provided with external power through a power outlet and has a complex circuitry that allows it to amplify the weak signal that has been received by the outdoor antenna. The indoor unit then sends the electrical signal to the indoor antenna that is directly connected to the unit, and the antenna converts the electrical signal to waves of the same frequency as were received by the outdoor unit. This, the frequency range of the waves does not change, and the cell phones do not notice any difference, except for a dramatic increase in the signal power that they are receiving.
 
   Ready-made kit for amplifying cellular communications 2G GSM and 3G WCDMA at 900+2100 MHz. The coverage area of ​​the amplifier is up to 100-350 sq. Equipped with outdoor 20m cable and indoor 5m cable, outdoor log-periodic antenna and indoor ceiling antenna, power supply. For ease of setup, the amplifier has a display that shows information about the signal.
 
  In order for the device to work, you will need to hang and attach the outdoor antenna to a mast or wall mount, point the anteLnna at the base station, run the cable into the room and connect to the repeater.
 
  The coverage of the amplifier is highly dependent on the input signal level, as well as the material of the walls and other design features of the buing.ldi To achieve maximum signal coverage, an amplifier signal splitter (split / splitter) is used to connect additional internal (home) antennas placed in different zones (rooms).
 
Technical Specifications

Specifications

Parameters

Frequency Range (Customers to Choose)

Uplink

890-915MHz, 1920-1980MHz

Downlink

935-960MHz, 2110-2170MHz

Frequency Bandwidth

25MHz&75MHz

Device Gain

70dB

Automatic gain control (Step Attenuation)

31dB @ 1dB/ Step

Auto Gain Control

20dB Min.

Output Power(Customers to Choose)

20dBm

Spurious Emission

≤ -15dBm/30kHz

9kHz~1GHz: ≤ -36dBm/30kHz

1GHz~12.75GHz: ≤ -30dBm/30kHz

Inter-Modulation Attenuation ACPR

≤ -40dBc / 30kHz (measured under rated output power)

In-band Ripple

≤ 3dB

VSWR

<=2

I/O Impedance

50 Ω

Noise Figure

≤ 5dB

System Delay

≤ 5μs

RF Connector(Customers to Choose)

N(Female)

Operating Temperature

Operation: - 10°C ~ + 55°C / Storage: -20°C ~ +60°C

Power Supply

AC 110~220V±20%, 50/60Hz(AC 220V/ DC5V/2A power adapter)

Dimensions

165*130*40 (mm)

Weight

≤0.8 kg(Net)

Alarm Monitoring System

Alarm for uplink self-oscillation

Indication LED

Power supply

Further detail pls click here for downloading the products specification:
900+2100MHz A032 mobile signal repeater.pdf
 
Selling Point
 

1. Intelligent to guide the installation with LCD


2. Real time display the signal strength.


3. Automatic dormancy when no user make the calling


4. Automatic alarm when installation mistake and provide the according solution


5. Automatic adjust the system gain to avoid the repeater self-excitation


6. Initiative reminding when the device was damaged.
 
 
Product Description

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FAQ:
Q1 : Are you trading company or manufacturer ? Could I use our own logo and label?
A1 : We are factory, with trading service. We provide OEM/OEM service.
 
Q2 : Can I have a sample order? What is your MOQ?
A2 : Yes, we welcome sample order to test and check quality. MOQ is 1 for normal products.
 
Q3 : Could we use own LOGO in mass production?
A3 : Yes, customized logo and design in mass production are available,Actually,most of clients are OEM.
 
Q4 : What is your warranty time?
A4 : We promise 3 years warranty for all products shipped from us. Man-made sabotage and natural factors are not within the scope of warranty.
 
Q5 : What is your payment terms?
A5 : We accept Alibaba Trade Assurance, T/T, West Union, Paypal, Bank Account Transfering.

Overall Rating
5.0
★★★★★
★★★★★
Based on 50 reviews recently
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All Reviews
  • A
    ATNJ Digital 900 1800 2100 Band Selective RF Repeater with Wifi Control for Cellphone
    Finland Oct 8.2025
    ★★★★★
    ★★★★★
    빠른 배송..신속한 소통 .요구사항에 대한 빠른 회신
  • A
    ATNJ Digital 900 1800 2100 Band Selective RF Repeater with Wifi Control for Cellphone
    Italy Jul 13.2025
    ★★★★★
    ★★★★★
    I have bought these products before, and I have had no problems, they are of very good quality.
  • A
    ATNJ Digital 900 1800 2100 Band Selective RF Repeater with Wifi Control for Cellphone
    Norway Jun 22.2025
    ★★★★★
    ★★★★★
    Livraison dans un délai acceptable par voie aérienne. Qualité : j'attends d'installer totalement l'appareil.