Concrete walls, steel reinforcement, low-E glass, and underground levels—modern building materials are formidable barriers to RF signal propagation. A single high-power repeater mounted on the roof may provide excellent outdoor coverage yet leave interior spaces, basements, and parking levels with little to no signal. Our Optical VHF DAS Signal Distribution System solves this fundamental coverage asymmetry by deploying a network of fiber-connected remote units that deliver uniform signal strength to every corner of your facility, both inside and out.

The hybrid architecture combines IP40-rated indoor remote units for climate-controlled equipment rooms with IP65-rated outdoor units for parking structures, loading docks, and perimeter areas—all managed from a single 2U rack-mountable master unit. Independent gain control per remote unit (0-31dB in 1dB steps) allows precise optimization for each coverage zone, while Automatic Level Control protects against overload from strong nearby transmitters. This unified approach eliminates the coverage patchwork typical of multi-repeater installations.

• Hybrid deployment with IP40 indoor and IP65 outdoor remote units from one master
• Up to 8 remote units per master for comprehensive multi-zone site coverage
• Independent per-zone gain control (0-31dB, 1dB steps) for precise optimization
• Automatic Level Control (ALC ≥20dB) prevents overload in high-signal areas
• Fiber backbone eliminates inter-floor and cross-building signal attenuation
• Centralized web-based management reduces operational complexity and cost

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.

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.