Shenzhen Atnj Communication Technology Co., Ltd.
                                                                                                           
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16 Years
Since 2010
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ATNJ NB-GDW 2G 3G 4G LTE Cell Signal Booster with 300 m² Coverage and 68dB Gain for Home and Office Use

Price Negotiable
Price: USD+240---260+kit
MOQ: 5Pcs
Delivery Time: 3-5 work days
Brand: ATNJ
Product Description
ATNJ NB-GDW Cell Signal Booster Overview
The ATNJ NB-GDW is a latest-generation LCD booster designed to improve weak GSM signals across two frequency bands. The LCD display provides real-time signal level monitoring, setup recommendations, error notifications, power status, and ALC data. This model features an additional port for an extra interior antenna, enabling flexible redistribution of enhanced signals.
Coverage Area
Provides effective signal amplification for medium-sized homes, offices, shops, and other areas up to 300 m² (3200 ft²).
Supported Signal Types
This dual-band amplifier boosts GSM signals at 900 MHz and 1800 MHz simultaneously. The 900 MHz frequency is widely used throughout the European Union and globally, while 1800 MHz serves as either a primary or supplementary frequency depending on region, making this device compatible with various mobile providers.
Technical Specifications
ParameterUplinkDownlink
GSM 900MHz890-915MHz935-960MHz
4G 1800MHz1710-1785MHz1805-1880MHz
3G 2100MHz1920-1980MHz2110-2170MHz
Max. Gain68dB±2dB65dB±2dB
Max. Output Power17dB±2dB20dB±2dB
BandwidthWide Band
Ripple in Band≤ 8dB
Noise Figure≤ 6dB
VSWR≤ 2.0
Spurious Emission9KHz~1GHz: ≤ -36dBm1~12.75GHz: ≤ -30dBm
Time Delay≤ 1.5 μs
MTBF> 50000 hours
Impedance50 ohm
Power SupplyAC 90-240V, DC 5V/3A
RF ConnectorSMA-Female
Operating Temperature-10°C ~ +55°C
Size20.4×16.4×4.4cm
Gross Weight0.8Kg
How It Works
1. Receives strong outdoor signal from cellular tower
2. Cable transmits signal to repeater unit
3. Signal booster amplifies the received signal
4. Enhanced signal improves indoor cellular reception
ATNJ NB-GDW cell signal booster installation diagram showing signal flow from tower to indoor coverage
Key Features
Intelligent LCD display guides installation process
Real-time signal strength monitoring
Automatic dormancy when no calls are active
Automatic alarm system for installation errors with solutions
Automatic gain adjustment to prevent repeater self-excitation
Proactive damage detection and notification
Supports 0.2 to 20MHz bandwidth (customizable)
5G bandwidth support: 40MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, 100MHz (customizable)
Optional WIFI monitoring and control with network management system
Multiple appearance customization options available
ATNJ NB-GDW cell signal booster front view showing LCD display and controls ATNJ NB-GDW cell signal booster side view showing ports and connectors ATNJ NB-GDW cell signal booster rear view showing power input and antenna connections ATNJ NB-GDW cell signal booster installation in office environment ATNJ NB-GDW cell signal booster close-up of LCD display showing signal strength ATNJ NB-GDW cell signal booster packaging and accessories ATNJ NB-GDW cell signal booster technical specifications label ATNJ NB-GDW cell signal booster comparison with other models ATNJ NB-GDW cell signal booster wall mounting installation ATNJ NB-GDW cell signal booster in residential setting showing improved coverage
Frequently Asked Questions
Do you have CE or any other certification?
Yes, we have CE, ROHS, and ISO certifications.
Can you give me a discount?
Please discuss pricing with our sales team.
How about gain and output power of your device?
Different models have varying gain and output power specifications. Contact us for detailed technical information.
How long is warranty period?
12-month warranty with 24/7 technical support.
How many square meters can be covered?
Coverage area varies by model. This NB-GDW model covers up to 300 m² (3200 ft²).

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen Atnj Communication Technology Co., Ltd.
Location Floor 12, Building A, Rd Jiangshi, Quanju High-Tech Industry Park, Guangming District, Shenzhen, Guangdong Province, China
Contact Person Wave Luo

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