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2G 4G Dual Band Signal Booster

Basic Properties
Place of Origin: China
Brand Name: ATNJ
Certification: CE,ROHS,CCC,TUV,BV, ISO
Model Number: JS-DB900/1800
Trading Properties
Minimum Order Quantity: 5Pcs
Price: USD+100---120+kit
Payment Terms: T/T, Western Union,Paypal,Alibaba,Bank transfering.
Supply Ability: 1000+unit+per day.
Specifications
Frequency Range: According To Customer's Need,(Band 3)1800MHz -- Uplink Frequency: 1710-1785MHz/Downlink Frequency :1805-1880MHz (Band 8)900MHz -- Uplink Frequency: 880-915MHz/Downlink Frequency : 925-960MHz Gain: ≥70dB
Output power: 20dBm Color: Gold And Black And White Or Cuztomized
AGC Intelligent function: Done,31dB @ 1dB/ Step ALC Intelligent function: Done
MGC: Done Warranty: 2 Years
Weight: 4kg Packing size: 52x21x16cm
High Light:

2G 4G Dual Band Signal Booster

,

20dBm Dual Band Signal Booster

,

20dBm Cell Phone Signal Repeater

Product Description

2G 4G Dual Band Signal Booster

 

2G 4G Dual Band Signal Booster E900/1800MHz Cell Phone Signal Repeater Amplifier

 

Check the frequency range before you buy

To make sure that the amplifier you buy is suitable for your mobile operator, please follow the steps and detect the frequency range of your mobile phone. This signal booster can only work on Band 8, Band 3.


Band 8 = B8 = 2G GSM900/EGSM900
Band 3 = B3 = 4G LTE1800/4G LTE1800
Band 1 = B1 = 3G WCDMA2100/3G UMTS2100

 

Technical Specifications

Specifications

Parameters

Frequency Range (Customers to Choose)

Uplink

880-915MHz,1710-1785MHz

Downlink

925-960MHz,1805-1880MHz

Frequency Bandwidth (3dB Bandwidth)

35MHz&75MHz

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:

E900+1800MHz A032 mobile signal repeater.pdf

 

Product Description

 

 

LCD Display

 

Even a non-technical person can easily install and use this signal booster. The display shows all important information and prompts: input and output signal strength, installation details, power, AGC (automatic gain control), etc.

 

AGC MGC Function

 

The AGC and MGC functions can prevent the amplified signal from causing interference to the base station. Even if it is installed incorrectly, the amplifier can protect the normal operation of the base station.

 

Adjustable Gain

 

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

 

 

2G 4G Dual Band Signal Booster 02G 4G Dual Band Signal Booster 12G 4G Dual Band Signal Booster 22G 4G Dual Band Signal Booster 32G 4G Dual Band Signal Booster 4

 

Accessories

 

a. One dual band signal booster;

 

b. One indoor antenna;

 

c. One outdoor antenna;

 

d. 20meter cable and 5meter cable;

 

e. User manual;

 

f. Power adapter.

 

2G 4G Dual Band Signal Booster 5

 

 

Installation Approaches

 

1.Fix up outdoor antenna reception on housetop and point to signal tower;

 

2.Connect outdoor antenna to “outdoor” port in repeater nachine through cable;

 

3.Connect indoor antenna(s) to “indoor” port in repeater machinethrough cable also;

 

4.Plug power adaptor into AC power socket and finish installation.

 

 

2G 4G Dual Band Signal Booster 6

2G 4G Dual Band Signal Booster 7

2G 4G Dual Band Signal Booster 8

 

 

The repeater makes the signal stronger in places with poor signal coverage such as:

 

1) Underground areas: basements, parking lots, tunnels;

 

2) Other places where cellular signal is shielded by metal or concrete walls: offices, supermarkets, cinemas, hotels;

 

3) Places distant from the BTS like private houses.

 

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
    Greece Aug 5.2025
    ★★★★★
    ★★★★★
    All ATNJ products are very well made at a reasonable price. Our clients are delighted with their products and their service and attention is phenomenal. Really recommend them
  • 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.