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Functions of a Cell Phone Jammer.

A cell phone jammer blocks mobile signal within a specified radius. Some years back the use of cell phone jammers was only left for the security department. In the recent past, the use of jammers have been extended to religious and workplace. 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 come in different sizes with varying working radius. 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 jammer operates using electrical power and has a switch 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 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. It operates by producing radio frequencies similar to the ones that a mobile phone operates on. The frequencies are meant to cause interference with the existing mobile frequencies. There are two broad categories in which the cell phone jammers can be grouped depending on the working principle. 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 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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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. 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.