Cellular Jamming: CJ-GSMIt is a system that suppresses mobile phone communications in a designated area. The system does not interfere with any other type of communication within the quiescence area except for mobile phones. The system is available in different versions capable of covering all the frequency ranges (800/900 – 1800/1900 MHz). It operates both on analogue (AMPS, TACS, NMT) and on digital (TDMA, CDMA, GSM, PCS) mobile systems. It is equipped with a set of omnidirectional and directional antennas to cover the quiescence area with precision. The system operates by deceiving the decoding system of mobile handsets, as if no radio base station were present in the area. As a consequence, all telephone calls are interrupted and the radio connection is lost. When the system is switched off, all the mobile phones in the area automatically re-establish communication with their radio base systems and the service is restored. Applications: soundproofing of offices, board rooms, conference centers, libraries, cinemas, theatres, schools and universities, exclusive restaurants; protection of electromedical devices from mobile systems traffic in hospital facilities and wards; security in controlled areas against the spreading of information via cellular phones: prisons, embassies and consulates, court rooms, military areas, etc.
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