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How a Cell Phone Jammer Works. The function of a cell phone jammer is to block mobile signals. The jammers were initially left for use by the defense sector for security purposes. Currently, the use of jammers have been employed in many areas such as phone usage restricted work places and religious places. The devices has also been used to ensure meeting runs smoothly without phone distraction by disallowing phone calls and messaging. The working principle of jammer is similar to that that is used for disrupting of radio waves. The jammers are differentiated based on size and the working radius. If you want a large working radius then you should go for a big jammer. Some of the jammers are also capable of blocking both listening and speaking signals. A jammer operates using electrical power and has a switch button. To determine if it is functioning, the bulb should be on. Larger jammers are always connected to an output power source while the smaller ones can use batteries such as phone batteries. The antenna is used for sending and receiving signal, larger jammers usually have an external jammer. The main electrical components of typical a jammer are voltage-controlled oscillator, tuning circuit, noise generator, and an RF amplification which perform specific tasks towards blocking mobile signal. The function of the voltage-controlled oscillator is to produce the radio signal that will interfere with the mobile signal while the tuning circuit controls the frequency that the jammer broadcasts its signal. The function of the noise generator is to generate random electrical output in a specified range to interfere with the mobile signals while the RF amplification is used to enhance the level of radio frequency so that it can block a mobile signal.
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A cell phone jammer works the same way as a radio jammer. A cell phone jammer generates radio frequencies which are those of a mobile phone. The radio frequency generated will interfere with the ones connecting one cell phone to another. The cell phone jammers available are grouped into two categories according to how they block the signals. One of the categories is the one containing the small jammers that operate by blocking the radio signals between a cell phone and another cell phone. The second group contains the large and powerful jammers. The jammers operate by blocking the transmission of mobile signal from the satellite to the cell phone tower.
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Several types of cell phone jammers exist that vary depending on quality and size. Some of the common cell phone jammers include portable, remote control, adjustable, and school cell phone jammers. There are several other uses of cell phone jammers apart from the ones mentioned above.