Shenzhen Atnj Communication Technology Co., Ltd.
                                                                                                           
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16 Years
Since 2010
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Consumer Electronic TV Receivers & Accessories Radio & TV Broadcasting Equipment

70dB Gain 3G Signal Booster Dual Band Repeater 850MHz 1900MHz with 20dBm Output Power for Cellular Network Enhancement

Price Negotiable
Price: USD+70---85+kit
MOQ: 5Pcs
Delivery Time: 1-3 work days
Brand: ATNJ
Product Description
Product Overview

This 70dB gain dual band signal booster operates on 850MHz and 1900MHz frequencies, supporting 2G, 3G, and 4G networks. It simultaneously enhances both voice calls and LTE data connectivity for unlimited mobile devices while reducing radiation exposure in weak signal areas.

Key Features
  • 70dB high gain amplification for superior signal enhancement
  • Dual band coverage: 850MHz and 1900MHz frequencies
  • Supports 2G, 3G, and 4G networks simultaneously
  • Automatic Level Control (ALC) prevents signal interference
  • CE and RoHS certified for safety and environmental compliance
  • No limit on number of connected mobile devices
Technical Specifications
Parameter Specification
Frequency Range Uplink: 824-849MHz, 1850-1910MHz
Downlink: 869-894MHz, 1930-1990MHz
Gain 70dB
Output Power 20dBm
Operating Temperature -10°C to +55°C
Power Supply AC 110-220V±20%, 50/60Hz
Dimensions 165×130×40mm
Weight ≤0.8kg

For complete technical specifications, download:

Installation Guide
  1. Mount outdoor antenna on rooftop directed toward signal tower
  2. Connect outdoor antenna to "outdoor" port using provided cable
  3. Connect indoor antenna to "indoor" port
  4. Plug power adapter into AC power socket
Package Contents
  • Dual Band Booster unit
  • Power adapter
  • Outdoor Log-periodic antenna
  • Indoor Omni antenna
  • Indoor Ceiling antenna
  • 5 meters cable
  • 20 meters cable
Application Areas

Ideal for locations with poor signal coverage including:

  • Underground areas: basements, parking lots, tunnels
  • Signal-shielded spaces: offices, supermarkets, cinemas, hotels
  • Remote locations distant from cellular towers
Product Images
LCD Display 2G 3G 4G Dual Band Repeater showing signal strength indicators Close-up view of dual band repeater control panel and connectors Mobile signal booster installation diagram showing antenna placement Complete signal booster kit components laid out for display Indoor antenna installation example in office environment Outdoor antenna mounting demonstration on building rooftop
Warranty & Support

Three-year guarantee period with comprehensive technical support. All products are tested twice before shipping. Contact us for installation assistance before opening disputes.

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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