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Functions of a Cell Phone Jammer. A cell phone jammer blocks mobile signal within a specified radius. 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 device will prevent your phone from call of receiving of calls, therefore, guaranteeing zero phone distraction in a meeting. The technology employs the same principle that is used for disrupting radio waves. The jammers are available in different sizes and operating range. If you want a large working radius then you should go for a big jammer. A good jammer should also be able to interfere with both speaking and listening signals. A cell phone jammer is a simple device that operates electronically using an on/off button. It always has a light that lights whenever it is switched on. Small jammers operate using batteries while larger jammers are plugged in into a power socket. Large jammers usually has an external antenna that is useful for sending and receiving signals. A voltage-controlled oscillator, tuning circuit, noise generator, and an RF amplification which perform specific tasks towards blocking mobile signal are the universal components of a cell phone jammer and they are meant to perform specific functions. The purpose of the voltage-controlled oscillator is to generate radio signals that will be enough to block the existing mobile signal whereas the tuning circuit regulates the frequency at which the jammer broadcasts its signal. 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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A cell phone jammer works the same way as a radio jammer. The radio frequencies produced are always similar to the ones that the mobile phones operate on. 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. 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 jammers operate by blocking the transmission of mobile signal from the satellite to the cell phone tower.
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There are several types of cell phone jammers in the market today which vary regarding quality and size. Some of the common cell phone jammers include portable, remote control, adjustable, and school cell phone jammers. The use of cell phone jammers are not restricted to the ones mentioned above since you can also install them in your home if you want privacy.