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Railway broadcasting

Sector of strategic relevance for railway operations, which is significantly affected by the regularity and safety of the traffic. Traditionally the sector served by railway telecommunications facilities, on which movement dispatches and other functions are based, have more recently been the subject of significant developments regarding the introduction of radio techniques, which can allow more flexibility and redundancy. ERTMS projects of the highest level refer to this technology. In Italian FS the radio technology development programs are based on two systems, respectively at 900 MHz (GSM) and 450 MHz (TACS), of which the first is framed in GSM-R. The use of radio in a railway environment is in particular linked to the problems of coverage in tunnels (need to install cracked cables) and to standards for the insurance of transmissions in safety. Radio communications are also applied in the use of radiotelephones (maneuvering activities, radio telephony), radio-controlled maneuvering locomotives, such as GPS satellite data transmission, economic operating systems

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