Shenzhen Atnj Communication Technology Co., Ltd.
                                                                                                           
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16 Years
Since 2010
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380--390MHz TETRA Digital Active DAS System

Price Negotiable
Price: Negotiable
MOQ: 5Pcs
Delivery Time: 45 work days
Brand: ATNJ
Product Description
380-390MHz TETRA Digital Active DAS System
Public Safety DAS Long Distance VHF Digital Active DAS System
Product Overview
The 2Watt Digital Optical Repeater System is a high-performance VHF Digital Optical 380MHz Amplifier DAS Repeater designed for public safety applications. This Digital Optical Repeater (DOR) provides comprehensive in-building or outdoor signal coverage by converting RF signals to digital optical signals for transmission over fiber optics between Master Units (MU) and Remote Units (RUs).
The system enables low-loss, long-distance distribution of cellular signals (2G to 5G) with high dynamic range, precise time delay management, and multi-band/multi-operator support capabilities.
Key Components
  • Optical-to-Electrical (O/E) Converter: Converts incoming optical signals to electrical signals
  • Digital Signal Processor (DSP): Performs signal regeneration, error correction, clock recovery, and noise reduction
  • Electrical-to-Optical (E/O) Converter: Re-transmits the regenerated digital signal as amplified optical pulses
System Features
  • Multi-band system support
  • Optical transmission up to 10km (maximum)
  • OMS Lite local/remote control support
  • Low noise and high reliability operation
  • Each master unit supports up to 8 remote units
  • Donor signal parameter monitoring for easy optimization and troubleshooting
Technical Specifications
Part Number: DS-OPT-380
Parameter Master Unit (MU) Remote Unit (RU)
Frequency Range Uplink: 380-385MHz (adjustable)
Downlink: 390-395MHz (adjustable)

Maximum Input Power 10 dBm (Non-Destructive)
Transmission Distance ≤ 20km
Maximum RF Output Power -10±2dBm (UL) 33±2dBm (DL)
Number of Units 1 ≤ 16
Maximum Gain (Cable Access) 50±2dB
Gain Adjustment Range 1-25 dB @ step of 1 dB
VSWR ≤ 1.6
Noise Figure ≤ 5dB (Uplink only)
In-band Ripple ≤ 3.5dB
Spurious Emission ≤ -36dBm
Third-Order Inter-Modulation ≤ -45dBc / 30kHz
System Delay ≤ 21μs
I/O Impedance 50Ω
RF Connector 1xN-Female 1xN-Female
Optic Connector 8x FC/APC 1x LC/UPC
Fiber Optical Type Single Mode
Optical Output Power ≥ -9dBm
Optical Receiver Sensitivity ≤ -20dBm
Temperature Range Operation: -25°C to +55°C
Relative Humidity Range ≤ 95% (non-condensing)
Power Supply AC 220V±44V/50±5Hz
Power Consumption ≤ 25W ≤ 160W
Application Indoor (IP20) Indoor or Outdoor (IP65)
Dimensions 330×425×44mm (19" 1U) 450×335×180mm
Weight 8 kg 20 kg
Product Images
Digital Optical Repeater System Diagram showing signal flow and component layout
DAS System Configuration diagram illustrating network architecture
DAS System Technical Details showing internal components and specifications
DAS System unit showing physical design and interface connections
Signal Coverage Solution demonstrating application scenarios
Product Applications
DAS System Application Scenarios showing deployment in various environments
About Our Company
Shenzhen A T N J Communication Company Overview showing company profile and capabilities
Located in Guangming District, Shenzhen, Shenzhen A T N J Communication is a professional RF manufacturer with 16 years of experience in R&D, production, manufacturing, sales, and technical services. Our main products include Digital LTE/NR series repeaters, SDR core boards, passive devices, Digital DAS systems, and technical solutions for Public and Private (VHF, Tetra) network base stations and wireless frequency modules.
We provide OEM and ODM services for various RF projects, including wireless repeaters, multi-frequency DAS systems, remote network management center OAM, and equipment provision for indoor and outdoor signal coverage projects.
Company Facilities and Manufacturing showing production environment and quality control
Our digital repeaters now support 12 subbands simultaneously with local and remote control and monitoring capabilities. These products are supplied to signal operators and communication integrators worldwide, providing signal coverage solutions for residential areas, office buildings, supermarkets, basements, and rural areas.
We have successfully introduced mature digital band-selective repeaters to overseas mobile operator markets. Our product field extends to Public Safety and Low Altitude Economic construction applications, including Public and Private Network Digital Multi-subband Repeaters, wireless signal repeaters, Integrated Base Stations, civil countermeasures, and phased array radar technology.
Furthermore, we have realized Digital fiber multi-frequency, UHF, Tetra, VHF, and Microwave frequency shift repeaters. As technology progresses, we continue to develop easier-to-use, more functional, and intelligent RF products. We look forward to collaborating with you to create a brighter future together.
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WhatsApp: +8618813582037

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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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