Tunnel coverage solutions
Tunnels are typical examples of Confined Areas, areas where there is limited or even no radio network coverage available. Due to the structure and construction of a tunnel (cement, concrete, stone, etc.) radio signals, like TETRA, GSM, FM and DAB can’t get through which results in no network coverage and thus no ability to communicate in these locations.
For several organizations, like police and fire man, security organizations, as well as mobile telecom operators network coverage in these environments is desirable and for the former even required to ensure safety.
SAIT offers solutions that make communication in tunnels possible. The total solution of SAIT undertakes the design, installation and commission of the passive components (cables, antennas) as well as the active components (repeaters) of a Confined Area solution. Easily said, the implemented solution captures the outdoor radio signal – TETRA, analogue signal, GSM, work channels, FM, etc. – and inject these signals into radiating cables or antennas which retransmission the radio signal in the tunnel. Through some carefully placed auxiliary equipment on the installation, the signals are reconditioned in order that the service delivered meets the recommendations of the tunnel operator and the communication quality satisfactory to the users.