Digital VHF 136-174MHz Optical DAS System for Public Safety

In emergency situations, communication failure is not an option. Firefighters, police officers, and paramedics operating in high-rise buildings, underground parking garages, and large public venues depend on uninterrupted VHF radio coverage to coordinate rescue efforts and ensure personnel safety. Our Digital VHF Optical DAS System is engineered specifically for these mission-critical public safety applications, transforming dead zones into reliable coverage areas through advanced fiber-optic signal distribution.

The system seamlessly integrates with existing Land Mobile Radio (LMR) and P25 infrastructure, converting RF signals to optical for transport over single-mode fiber. This architecture enables centralized dispatch centers to manage geographically distributed remote units covering up to 10 kilometers, ensuring first responders maintain clear voice communications regardless of their location within the coverage zone.

• Seamless integration with existing LMR and P25 public safety radio infrastructure
• Fiber backbone eliminates in-building dead zones across up to 10km reach
• Single master unit manages up to 8 remote units for multi-site coverage
• Real-time donor signal monitoring for proactive fault detection and rapid troubleshooting
• Low noise figure (≤6dB uplink) preserves voice clarity in challenging RF environments
• OMS Lite software enables secure local and remote system configuration management

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.