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How a Cell Phone Jammer Works. A cell phone jammer is always used for blocking mobile signals in a specific area. Initially, the jammers were only used for security reasons by the security department. 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 jammers works in the same principle that is used for blocking of radio waves. The jammers come in different sizes with varying working radius. Large devices are always known to have a bigger working range. A good jammer should also be able to interfere with both speaking and listening signals. A jammer operates using electrical power and has a switch button. To determine if it is functioning, the bulb should be on. Small jammers operate using batteries while larger jammers are plugged in into a power socket. 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 jammer is capable of regulating the frequency at which it broadcasts its signal because of the tuning circuit while the voltage-controlled oscillator is meant for production of enough radio signals to block the mobile signals. The function of the RF amplification is to boost the power of radio frequency to amounts that can interfere with a signal while the noise generator is for generation of random electrical output to interfere with the existing mobile signals.
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The working principle of a cell phone jammer is similar to that of 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. There are two broad categories in which the cell phone jammers can be grouped depending on the working principle. The first category is the one that block the radio frequency signals between cell phones and the jammers are always small. The second category is meant for the jammers that are larger and more powerful. The second category usually operate by causing interference on the radio frequency signals between the satellite and the cell phone towers.
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The jammers are always available in different sizes and quality. Portable, remote control, adjustable, and school cell phone jammers are some of the types of jammers available. There are several other uses of cell phone jammers apart from the ones mentioned above.