Cell phone signal scrambler

How many test signal screens should be installed in a classroom? Every year when the college entrance examination is approaching, before this important day, the staff in charge of the college entrance examination room are actively preparing for the various materials needed in the examination room. There is also a mechanical device called a wireless signal jammer. , This kind of machine can ensure the order of the examination room and maintain a good environment, so that all communication signals in the examination room can be effectively isolated. Electronic signals are an increasing information transmission tool today. If you want to isolate the signal, you need to install a wireless signal jammer. But facing the problem of installing wireless signal jammers, many schools are thinking about how many machines should be equipped in a classroom?

To solve this problem, we must first consider the actual and effective effect of the wireless signal jammer, because it does not matter whether there is a base station within 500 meters, and whether it is used through a wall. Under normal circumstances, if there is no base station within 500 meters, and it is used in an open area, then a classroom will probably need one machine, which depends on the actual use situation. This cannot be guessed and can only be used in actual use. I know, so if you are worried about this, you can buy a wireless signal jammer with higher power, which can also solve the problem.


The mobile phone and the base station are connected by radio waves within a certain frequency range, and data and sound transmission are realized at a certain baud rate and modulation. In the working process, the cell phone signal jammer scans from the front to the low end of the channel to the high end at a certain speed. When the mobile phone receives the information signal, the scanning speed will produce garbled interference, and the mobile phone cannot detect the normal data from the base station, which causes the mobile phone to be unable to establish a connection with the base station, thereby achieving the purpose of shielding the mobile phone signal. The mobile phone appears as a network search, no signal, and no service. System and other phenomena.

In short, the mobile phone signal jammer will send out a frequency signal when it is working, which will interfere with the mobile phone receiving the normal frequency sent by the base station, so as to achieve the purpose of shielding.

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