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2G 3G 4G Mobile Signal Boosters 850MHz 2100MHz Dual Band Repeater

Basic Properties
Place of Origin: China
Brand Name: ATNJ
Certification: CE,ROHS,CCC,TUV,BV, ISO
Model Number: JS-850/2100
Trading Properties
Minimum Order Quantity: 5Pcs
Price: USD+75---85+kit
Payment Terms: T/T, Western Union,Paypal,Alibaba,Bank transfering.
Supply Ability: 1000+unit+per day.
Specifications
850MHz Frequency Range: 824-849MHz / 869-894MHz 2100MHz Frequency Range: 1920-1980MHz / 2110-2170MHz
Gain: 70dB Output power: 20±3dBm
Color: Black & Customized Products Type: Cdma, Amplificateur De Signal
High Light:

850MHz Mobile Signal Boosters

,

2100MHz Mobile Signal Boosters

,

850MHz Dual Band Repeater

Product Description

2G 3G 4G Mobile Signal Boosters 850MHz 2100MHz Dual Band Repeater

 

Mobile Signal Booster 2G 3G 4G 850 2100MHz Dual Band Repeater Amplifier

 

Features:

 

1. Cost-effective solution for weak signal zones, reduce drop/off calls.

 

2. Compact size, low power consumption, easy installation, great cover.Expansion and extension of the signal of the base station. Optimization of the quality of the signal and source

 

3. High linear design, ALC function design, low interference to BTS.

 

4. Support any cellular devices (voice & data & video)

 

5. Wideband signal booster, or customize selective band booster.

 

6. Support System CDMA800, GSM, DCS, PCS, WCDMA, LTE 4G, etc

 

Technical Specifications

Specifications

Parameters

Frequency Range (Customers to Choose)

Uplink

824-849MHz, 1920-1980MHz

Downlink

869-894MHz, 2110-2170MHz

Frequency Bandwidth (3dB Bandwidth)

25MHz&60MHz

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)

SMA(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:

850+2100MHz AT005 mobile signal booster.pdf

 

Product Description

 

With ALC AGC Function

Can control gain automatically. Avoid base station interference

 

Network support : CDMA 2/3G + WCDMA 3/4G

 

(Band 5) 850MHz -- Uplink frequency : 824-849MHz / Downlink frequency : 869-894MHz
(Band 1) 2100MHz -- Uplink frequency : 1920-1980MHz / Downlink frequency : 2110-2170MHz


Gain : 70dB
Connector Type : SMA-female connector

 

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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.

 

 

2G 3G 4G Mobile Signal Boosters 850MHz 2100MHz Dual Band Repeater 8

 

 

Accessories

 

a. One dual band signal booster;

 

b. Two indoor antenna;

 

c. One outdoor antenna;

 

d. 20meter cable and 5meter cable;

 

e. User manual;

 

f. Power adapter.

 

 

2G 3G 4G Mobile Signal Boosters 850MHz 2100MHz Dual Band Repeater 9

 

 

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.

 

 

 

2G 3G 4G Mobile Signal Boosters 850MHz 2100MHz Dual Band Repeater 10

2G 3G 4G Mobile Signal Boosters 850MHz 2100MHz Dual Band Repeater 112G 3G 4G Mobile Signal Boosters 850MHz 2100MHz Dual Band Repeater 12

 

 

 

 

FAQ:
 

(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) 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.

 

(3) 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.

 

(4) Could I get a sample before bulk order?
Yes, we offer the sample for all models but charged.

 

Overall Rating
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★★★★★
★★★★★
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
    Belgium Nov 9.2025
    ★★★★★
    ★★★★★
    It works great, the frequency can be adjusted to Vodafone correctly,and LTE speed goes fast.
  • A
    ATNJ Digital 900 1800 2100 Band Selective RF Repeater with Wifi Control for Cellphone
    Germany Aug 14.2025
    ★★★★★
    ★★★★★
    To deal with ATNJ has been a pleasure because of the clever and special attention from Emma to assist me when our local post office neglected to make the delivery, Emma had better local information than me here in Australia. Because I live in a remote valley the local signal is very weak and the nearest tower is 20Km away. The ATNJ product has been excellent and delivers a stronger signal than two other well known products that I have tried. I am very effetively using two indoor antennas to cover down and upstairs The design is neat and effective and the instructions well describe how to instal and best practice. I can recommend this product with no hesitation.
  • 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.