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2G 3G 4G Dual Band Repeater

China Shenzhen Atnj Communication Technology Co., Ltd. certification
China Shenzhen Atnj Communication Technology Co., Ltd. certification
Customer Reviews
Good service and fast delivery

—— Aki Vaattovaara,Sweden

It arrived in time I am very satisfied with the support. The product si in very good conditions. I proved it and works very well.

—— JC Saavedra Libia,Peru

I an very satisfied with the Quality of the product. Also the miss that support me is very kind. she resolved all my doubts perfectly. the product arrived at time as usual.

—— JC Saavedra Libia,Peru

Ms Anne Wang works hard to provide very good service for customers. A pleasure to deal with. Product is as described and good value for money.

—— Lindsay Pettigrew,Australia

Excellent product as describe. Very good seller ! 100% recommended, 100% satisfied ! shipping very fast to Cambodia.

—— loem kom,Cambodia

I have received the repeater in 5/6 days, it is a robust case repeater, it looks nice, and it work perfectly. I suggest this brand repeater. good work

—— andrea cristofanini,Italy

получил товар. качество и параметры сответствуют описанию. продавец молодец!

—— akbar karaev,Uzbekistan

Super fast delivery and superb service/help from supplier. I haven't had a chance to try out the product but I am confident it will work fine. If not, the supplier is really helpful and I am sure he will assist me with futher installation details

—— Attila Kinkopf,United States

I haven't used the product yet but it looks like a quality product. Wave Luo was very helpful, thank you very much!!!!

—— Shephard Mack,South Africa

ATNJ, You got good products with good services, fast and easy to communicate.

—— Borin SIM,Cambodia

Gracias excelente productos y el envío muy rápido


Very technical and very welll organized and professional. Andrew has been a very helpful salesperson

—— gabriel haddad,Venezuela

Excelent product antennas and power.. its good, working very goog thanks ATNJ,

—— CARLOS GREGORIO,United States

Let’s be honest, the quality of my Vodafone mobile signal at home always left much to desire. I just was too lazy to do anything with it. I was absolutely satisfied with the rates and the quality of the signal that I had everywhere and my own house was an exception. However, the coronavirus pandemic changed everything. I started to spend much more

—— Ali , Spain

I bought this booster for my apartment because I was absolutely dissatisfied with the power of GSM and 4G signals that I had there. But now the situation has changed. Thank you for this booster, I finally don’t feel isolated when I stay at home alone.

—— Abdul Mohammed,Germany

I think that’s a very nice solution for those who suffer from problems with voice services and mobile internet and do not want to create any antennas or smth like that themselves. The price is absolutely fair and the quality is amazing.

—— Lena W.,Finland

I was very happy to see the discount that you offered. I know that quite often companies make discounts on goods that are not popular but in this case, I see that the situation is quite opposite. I like that this device is able to improve calls and the internet speed at the same time.

—— Giulia M.,Austria

Thank you! The booster is super cool for a private house. All the rooms are now covered with the improved signal. Now I can’t understand why we haven’t bought it earlier.

—— Nadine Nacht ,Germany

It’s a very cool booster! Thank you, dear team, for your attention to your clients’ needs and the prices that you offer. You are the best, ATNJ

—— Natalia L.,Norway

My 3G and GSM connection used to leave much to desire. But with m new booster I have practically forgotten all these problems. I really like that this device is so compact but so powerful. Thanks, guys, for your amazing work and fast delivery.

—— Goran N. ,Sweden

I can’t understand why I bought this repeater only 2 months ago and not earlier. That’s a very useful device for those who live in a rural area like my family. The improved quality of connection has significantly improved the quality of our life.

—— Lars M. ,United States

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2G 3G 4G Dual Band Repeater

2G 3G 4G Dual Band Repeater
2G 3G 4G Dual Band Repeater 2G 3G 4G Dual Band Repeater 2G 3G 4G Dual Band Repeater

Large Image :  2G 3G 4G Dual Band Repeater

Product Details:
Place of Origin: China
Brand Name: ATNJ
Certification: CE,ROHS,CCC,TUV,BV, ISO
Model Number: JS-DB1800/2100/P
Payment & Shipping Terms:
Minimum Order Quantity: 1
Price: USD+75---90+kit
Packaging Details: Standard neutral packing,52x24x16cm(1 kit), 4kits as 1 carton(54x49x33cm)
Delivery Time: 1-3 work days
Payment Terms: T/T, Western Union,Paypal,Alibaba,Bank transfering.
Supply Ability: 1000+unit+per day.

2G 3G 4G Dual Band Repeater

Frequency Range: According To Customer's Need,(Band 3)1800MHz -- Uplink Frequency: 1710-1785MHz/Downlink Frequency : 1805-1880MHz (Band 1) 2100MHz -- Uplink Frequency: 1920-1980MHz/Downlink Frequency : 2110-2170MHz Gain: ≥70dB
Output Power: 17±3dBm Color: Black Or Gold ,Cuztomized
AGC Intelligent Function: Done,31dB @ 1dB/ Step ALC Intelligent Function: Done
MGC: Done In-band Ripple: ≤ 3dB
VSWR: <=2 Noise Figure: ≤ 5dB
System Delay: ≤ 5μs Warranty: 36 Months
Power Supply: AC 110~220V±20%, 50/60Hz(AC 220V/ DC5V/2A Power Adapter) Inter-Modulation Attenuation ACPR: ≤ -40dBc / 30kHz (measured Under Rated Output Power)
Weight: 4kg Packing Size: 52x21x16cm

2G 3G 4G Dual Band Repeater


WCDMA Dual Band Repeater


70dB 2G 3G 4G Signal Booster

2G 3G 4G Dual Band Repeater


70dB Gain DCS WCDMA 2G 3G 4G Amplificateur Dual Band Repeater Mobile Signal Booster


Selling Point


2022 new upgraded Micro power smart single band signal repeater for residential use with WIFI monitoring and control function, it could cover 100- 300sqm (standard kit), and could support max 2 to 3 indoor antennas to cover over 800sqm. Analog repeater and Digital(Customized Selected Band) repeater for choice.


  •  Compact design. This booster is compact and convenient, so its black hi-tech casing will suit any interior.

  •  Gain control. Special ALC circuit will signal self-oscillation and also impedes interference into operator´s signal transmission.

  •  Multiple phone support. The booster provides unlimited number of users with amplified signal at a time.

  •  Advanced PCB allows future hardware upgrades for even more efficient booster functioning.

  •  CE and RoHS certificates. The booster doesn´t irradiate its users and environment.

Technical Specifications



Frequency Range (Customers to Choose)





Frequency Bandwidth (3dB Bandwidth)




Automatic gain control (Step Attenuation)

31dB @ 1dB/ Step

Auto Gain Control

20dB Min.

Output Power(Customers to Choose)


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



I/O Impedance

50 Ω

Noise Figure

≤ 5dB

System Delay

≤ 5μs

RF Connector(Customers to Choose)


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)


165*130*40 (mm)


≤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:

1800+2100MHz C03 Mobile Signal Repeater.pdf



Product Description



2G 3G 4G Signal Booster (B3 1800MHz+B1 2100MHz)


Gain: 70db

Max power: 20dbm


2G 3G 4G Dual Band Repeater 02G 3G 4G Dual Band Repeater 12G 3G 4G Dual Band Repeater 2


ALC functon


The ALC function can prevent excessive signal output and cause interference.


2G 3G 4G Dual Band Repeater 3

2G 3G 4G Dual Band Repeater 42G 3G 4G Dual Band Repeater 5


Packaging Including:


1. DCS 1800 WCDMA 2100 Dual Band Booster

2. Power adapter

3. Outdoor antenna

4. Indoor Omni antenna

5. Indoor Ceiling antenna

6. 5 meters cable

7. 20 meters cable



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2G 3G 4G Dual Band Repeater 8

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1. Are you trading company or manufacturer ? Could I use our own logo and label?

We are factory, with trading service. We provide OEM/OEM service.

2. Can I have a sample order? What is your MOQ?
Yes, we welcome sample order to test and check quality. MOQ is 1 for normal products.

3. Is it easy to set up your items?
Yes. We have a user manual and support technical support 24/7.

4. What is your warranty time?
We promise 3-year warranty for all products shipped from us. Man-made sabotage and natural factors are not within the scope of warranty.

5. Please feel free to contact us if any other questions.

Contact Details
Shenzhen Atnj Communication Technology Co., Ltd.

Contact Person: Angel Wang

Tel: 15989511440

Fax: 86-755-86136774

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