Radio Frequency Systems - Railway Technology
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Radio Frequency Systems

Wireless Communications Technology for the Transportation Industry

Kabelkamp 20,
30179 Hannover,


Radio Frequency Systems (RFS), the global wireless and broadcast infrastructure specialist, is the telecommunications partner of the transportation industry featuring field-proven innovations spanning in-tunnel, in-building, and outdoor wireless coverage solutions for the transportation market, including turnkey solutions for optimized communications.

For over 35 years, RFS has been providing solutions for the world’s metros, railways, road tunnels and underground mines. Today, RFS provides the most advanced active, passive and hybrid RF distribution systems for in-tunnel coverage, railway station coverage and outdoor track-side rail coverage.

Radiating cables and indoor antennas

RFS’s best-in-class communications technology for the transportation market includes the broadest range of RADIAFLEX® radiating cables with superior performances, the ClearFill fibre-optic extension and distributed antenna suite, plus unrivalled point-of-interface technology, which are expertly scaled to match every indoor coverage need for 2G, 3G, and 4G commercial radio services as well as TETRA and GSM-R mission-critical wireless services in the 400MHz, 700MHz, 800MHz, 850MHz, 900MHz, 1,700MHz, 1,800MHz, 1,900MHz, 2,100MHz, 2,400MHz and 2,600MHz bands.

Radiating cables for tunnels

RFS’s leading-edge technology for radiating cables enables low-insertion loss and excellent coupling performance, ideal for tunnels, by providing maximum useful lengths of individual cable runs, to minimise the total count of active equipment, thus allowing cost savings. Halogen-free, non-corrosive, low-smoke, flame-retardant jacket material contributes to safe and long-term reliable operation in tunnels.

The RFS RADIAFLEX radiating cable suite provides best-fit solutions for a variety of applications, including single-band and multi-band / multi-operator systems. Different cable types are available, with optimised performance accounting for project-specific in-tunnel installation methods and cable positioning options.

For example, RFS offers RF ultra-wideband radiating cables with no-stop band from 700MHz to 2,700MHz. They accommodate all current and future commercial radio and private radio services from 700MHz to 2700MHz in tunnels, including LTE, providing valuable cost savings. This ultra broadband characteristic is the result of RFS’ patented ‘higher order mode suppression technique’ in radiating cable design.

Furthermore, RFS offers a wide range of standard and heavy-duty installation accessories (hangers and clamps), specifically designed for easy cable attachment and orientation on tunnel walls, withstanding harsh environment conditions (pressure and wind load, resulting from high-speed train movement).

Wireless in-tunnel communications systems integrator services

In July 2010, RFS announced that it had been selected as systems integrator for the terrestrial trunked radio (TETRA) wireless communications system along the Beijing Metro Changping Line in China. The contract, valued at approximately 30 million Chinese yuan (€3.5m), is RFS’s second systems integration win for an in-tunnel wireless communications project for the Beijing Metro. In 2009, RFS successfully designed and integrated the TETRA wireless communications system for the Beijing Metro Line 4.

RFS won the Changping Line contract over both local and global competitors due to its strong technical design and service capabilities and its first-rate reputation. RFS will provide a complete TETRA wireless communications system and related services, including coverage design, delivery of TETRA  digital radio communications system and related equipments, site surveys, supervision, system commissioning and acceptance, as well as project and documentation management.

The tunnel coverage designs are based on RFS’s RADIAFLEX radiating cables, supported by a wide range of passive and active technologies, including TETRA fibre optic repeater systems, antennas and accessories, to meet precise coverage, traffic and route requirements. Similar solutions leveraging RFS products and expertise have already been proven in the Beijing Metro Line 4 and other metro lines in China.

By incorporating cutting-edge, fail-safe technology and a redundant design, RFS’s wireless in-tunnel solutions offer the highest availability on the market and the ability to upgrade and expand to meet future requirements.

RADIAFLEX®: The Optimal Confined-Coverage Solution – UPDATE 2

RADIAFLEX® is the world's leading, leaking feeder cable solution. Designed to provide, contoured RF indoor coverage, RFS RADIAFLEX® cable provides a scaleable and practical means of tailoring RF coverage in even the most challenging or confined spaces.

RFS and InfoGLOBAL Team Up for 5GHz-6GHz In-Tunnel Wireless Communication Systems

Radio Frequency Systems (RFS), the global wireless and broadcast infrastructure specialist, and InfoGLOBAL, worldwide leader of advanced telecommunications, control, video surveillance and security systems, introduce a worldwide unique solution for in-tunnel broadband wireless communication systems in the 5 to 6 GHz frequency band.

RFS Brings RADIAFLEX to TETRA World Congress 2012

Radio Frequency Systems (RFS), the global wireless and broadcast infrastructure specialist, will present its in-tunnel and in-building wireless communication solutions at Tetra World Congress 2012, which takes place from 14 to 17 May in Dubai. The RFS booth is situated at stand H405 in the Dubai International Convention and Exhibition Centre will present the portfolio of RFS Wireless Indoor Solutions products.

RADIAFLEX Development for Specific Railway Communications Industry Needs

Radio Frequency Systems (RFS) unveils its latest radiating cable development. The new RADIAFLEX cable series RAYT provides superior electrical performance in 2.4GHz - 2.5GHz, serves the needs of state-of-the-art wireless communications systems, especially in the railway sector, and significantly reduces costs.

RFS Presents at Tunnelling World Middle East 2012

Radio Frequency Systems (RFS), the global wireless and broadcast infrastructure specialist, will present complete passive and active solutions for in-tunnel and in-building wireless communications at Tunnelling World Middle East 2012.

RFS Provides Wireless Coverage for Guangshengang XRL Tunnels

Radio Frequency Systems (RFS), the global wireless and broadcast infrastructure specialist, today announced that it has successfully deployed an industry-leading wireless in-tunnel coverage system for the Guangshen section of the Guangzhou-Shenzhen-Hong Kong Express Rail Link (Guangshengang XRL).

Radio Frequency Systems (RFS)

Kabelkamp 20

30179 Hannover