Cell phone jammer is an electronic device that blocks transmission of signals between a cell phone and a base station. By using the same frequency as a mobile handset, the cell phone jammer creates strong interference for communication between the caller and receiver. It is efficient in blocking transmission of signals from networks including UMTS, 3G, CDMA, GSM and PHS. Because of the popularity of 4G signals, the new jamming devices can also block 4G and 4G LTE signals. Now, the ability to jam 4G signals is one of the criteria to determine whether jamming devices can be used in a variety of applications.
Most jammers transmit on the same radio frequency as nearby cell phones, sending a louder, more powerful signal to surrounding towers. So, when a jammer is activated, its signal immediately blocks out all of the other competing signals, with the nearby tower unable to support anything beyond this strong, manufactured signal. In other words, think of the jammer as a loud siren or horn that drowns out every conversation in its proximity.
Although cell phones are considered to be one of the most important devices, there will be many situations where they can become a torture. They can even spoil some of your most beautiful moments and events. Many times, we will be disturbed by calls when we are in an urgent meeting or situation. In such cases, you may have to switch off the phone, which will gradually show the caller that you are disconnecting their calls deliberately. However, you do have a better solution for this. Yes, this is possible with the cell phone jammer device. This device will jam the calls and help you to save your important time.
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Jammers work in one of two ways. Some devices set their signal to the same frequency as pagers and mobile phones, cutting off communication between handsets and base stations. Others work as electronic filters that fool mobile phones into thinking there are no frequencies available to make or receive calls. Manufacturers of the devices say the jamming only affects the designated area (most radii are a couple dozen to several hundred feet) and works only on cellular transmissions.
When the signal shielding is required, cellular jammers are applicable. Cell phone signal blocker will not affect other electronic gadgets when defending signals from base station. It creates a status of no access and no network. The cellular jammer is a multi channel kind for the communication signal of different channels. For different frequency range of cell phone communication contains different channels each one of that can be utilized as BCH. Moreover, MSC will decide which channels or channel will be utilized as BCH according to channel distribution in the network area. Based upon the cellular jammer and communication technology, there must be proper frequency difference to avoid interference.
Due to the difference in frequency, the interference device does not interfere with the descending signal. Therefore, your other smart devices will not be affected and will work properly.Many multifunction jamming devices also have a separate control switch, which can signal block as needed.
Scrambler Cell Phone Recommended Products
As one of the most popular cell phone jammers,this product is very convenient to carry, and can be easily put into the pocket after removing the antenna. With a separate frequency band switch, you can open or close a frequency band as needed. This product has the perfect heat dissipation system, can work long time. The shell is made of high quality metal with good heat dissipation. Generally speaking, the larger the interference range, the stronger the interference performance, the heavier the jammer device, and it is inconvenient to carry. But the device is an exception. This 8-band handheld jamming device not only has a good jammer performance, but also has a large block range. From all aspects of performance, not weaker than the desktop jammer. It is a very cost-effective product. This device is suitable for classroom, meeting room, library, movie theater and other places where need to keep quiet. Due to its small size and easy to hide, the device is popular with teachers and administrators.