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Disrupting a cell phone is the same as jamming any other type of radio communication. A cell phone works by communicating with its service network through a cell tower or base station. Cell towers divide a city into small areas, or cells. As a cell-phone user drives down the street, the signal is handed from tower to tower.
A jamming device transmits on the same radio frequencies as the cell phone, disrupting the communication between the phone and the cell-phone base station in the tower.
It's a called a denial-of-service attack. The jammer denies service of the radio spectrum to the cell-phone users within range of the jamming device.
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Cell phone jammer in the form of electromagnetism protection field around the user in order to prevent the reception of mobile phone and send signals to the base station, enabling to prevent leakage of confidential information through the phone.
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jammer is devices that create a temporary "dead zone" around the cell traffic in its proximity.Jammer is used by police and army to control or interrupt the communication in hostage situations and bomb threats.Traditionally,the inhibitors were large trailer-mounted antennas that had to be pulled behind a truck.Now available in a variety of shapes and sizes, some of which models are the size of a cell phone.
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Jammer is a elctronic mobile device.It is useful to stop mobile signal station Wi-Fi Internet connection through the network, or even block the Bluetooth connection. Cell phone signal jammers can eliminate the message, so students can not text each other, and teachers have taught. A cell phone jammer has three antennas, one for GSM, 3G and the DCS each. Radio jammer works is a white noise signal or wave foam. First, you must receive at least an hour to the interference. Then, you have to plug in the jammers, and open it, so close to the phone will not have any services available, all incoming calls will be lost.
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The cell phone jammer is a divice which can be used at high security alerts so that the all he cell phones can't work. It is used for the politicians security purpose.
