Home » Applications » Mobile Communications » In-Tunnel

In-Tunnel Communication Solutions

Ensuring Public Safety Communications

Many railway routes pass through long tunnel sections that block mobile signals. Nevertheless, travelers expect a strong and stable data and mobile connection throughout their entire journey. Emergency teams benefit also from a reliable service.

With its passive Mobile Network Combining System – MNCS® solutions, SPINNER enables the expansion of infrastructure to ensure seamless connectivity even in tunnels. The MNCS® systems offer outstanding intermodulation and isolation performance. Thanks to their proven reliability, these systems are already successfully deployed in several sections of Singapore’s metro network.

For mission-critical communications in tunnels, SPINNER also provides radiating cables—commonly known as leaky feeder cables. These cables ensure uninterrupted communication in challenging environments such as tunnels, subways, mines, and large building complexes. This reliability allows emergency services, including fire brigades, police, and rescue teams, to stay connected when it matters most.

SPINNER Cable Monitoring System

Cable Monitoring for Demanding Communication Environments

The SPINNER Cable Monitoring System (CMS) is an advanced real-time monitoring solution designed to continuously supervise coaxial and radiating cables over distances up to 2 km. It accurately detects and pinpoints cable faults such as short circuits, breaks, or attenuation changes, providing instant alerts via SNMP to higher-level monitoring systems.

Featuring integrated VNA technology, the SPINNER CMS measures VSWR values and fault locations with ±1.5 m precision. Its intuitive web interface offers graphical visualization, live system status, and detailed fault diagnostics. Multiple CMS units can be networked via TCP/IP, enabling scalable monitoring solutions for tunnels, airports, and large facilities.

By identifying issues immediately, the system drastically reduces downtime—from several days to just a few hours—enhancing operational reliability and availability. The base version, supports a wide frequency range from TETRA and GSM-R up to 5G.

Detect. Locate. Resolve. Instantly.

With the SPINNER Cable Monitoring System, you ensure reliable, precise, and fully automated monitoring of critical infrastructures and high-demand communication environments. The system combines advanced measurement technology with maximum operational safety, delivering superior availability and efficiency.