Rail Tunnel
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FRMCS-Ready with RFS RADIAFLEX The rail industry is entering a period of transition, with the FRMCS (Future Railway Mobile Communication System) framework set to become the next industry standard. FRMCS will facilitate the next-generation communication within the industry, using 5G technology for key applications.
Everything FRMCS is Mission-Critical IoT integration, automated train control, and voice communication for mission-critical applications are among the anticipated applications under the FRMCS standard, and all require the resilience of missioncritical infrastructure. Rail operators moving towards the new standard need not only to future-proof their infrastructure, but ensure it is fully capable of supporting every application with mission-critical resilience, building in connectivity safety nets to for uninterrupted communications.
Ensuring Mission Critical Performance When making infrastructure decisions, rail operators need to ensure: • Support for mission-critical voice, data, and signalling applications • In-built redundancy and proven resilience in harsh environments
Working with an Expert Partner Part of ensuring a smooth, seamless transition is working with the right partner who has: • Proven experience with transport mission-critical communication systems • Track record in managing communications standard transitions • Commitment to efficient installation and long-life solutions Radio Frequency Systems Leaflet | November 2025
RADIAFLEX® Delivers Mission Critical RADIAFLEX is the leading radiating cable solution, fully capable of meeting mission-critical requirements: • SUPPORT OF ANY APPLICATION
RADIAFLEX cables support multiple frequency bands and wireless technologies, so they can deliver all mission critical wireless services in tunnels.
• IMPROVE COMMUNICATIONS QUALITY
RADIAFLEX cables ensure low longitudinal and coupling losses, can be tailored for maximum performance, and are optimized to deliver missioncritical communications with complete reliability.
• FUTUREPROOF INVESTMENTS
RADIAFLEX cables support a wide range of wireless services up to 7 GHz and allow for future-proof communication systems featuring extremely long operating lifetimes
• ACCELERATE IN-TUNNEL WIRELESS SPEEDS
Combining vertically polarized and horizontally polarized RADIAFLEX cables creates near-perfect MIMO conditions in tunnels and set a world record for in-tunnel download speeds in 2018, reaching 560 Mb/s.
• INCREASE FIRE SAFETY
RADIAFLEX cables meet all major international flame and fire-retardance standards and achieved the top Construction Products Regulation (CPR) rating of B2ca with a d0 droplets rating.
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