380--390MHz TETRA Digital Active DAS System

The Digital Optical Repeater (DOR) is an advanced in-building or outdoor signal coverage solution that converts RF signals to digital optical signals for transmission over fiber optics between a Master Unit (MU) and Remote Units (RUs). This 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.

• 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

• Support multi-band system operation
• Optical transmission up to 10km (maximum)
• Support OMS Lite local/remote control
• Low noise and high reliability design
• Each master unit can support up to 8 remote units
• Monitor donor signal parameters for easy optimization and troubleshooting

Located in Guangming District Shenzhen, Shenzhen A T N J Communication is a professional RF manufacturer with 16 years of experience, specializing 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 undertake OEM, ODM services and projects for various RF equipment, wireless repeaters, multi-frequency DAS systems, remote network management center OAM, and equipment provision for indoor and outdoor signal coverage projects. Our digital repeaters reach 12 subbands simultaneously with local and remote control+monitoring capabilities, supplied to signal operators and Communication integrators worldwide for residential areas, office buildings, supermarkets, basements and rural areas.

Our mature digital band-selective repeaters have been successfully deployed in 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 countermeasure and phased array radar technology. We have realized Digital fiber multi-frequency, UHF, Tetra, VHF, and Microwave frequency shift repeaters. We continue to develop easier-to-use, more functional and intelligent RF products and look forward to collaborating with you to create a brighter future together.