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Cell Phone Signal Jammer For Car

Martin Jason 2021-10-12

The 2018 National College Entrance Examination will also be conducted from June 7th to 9th. According to the relevant regulations of the Ministry of Education and the Ministry of Industry and Information Technology, the test room will turn onsignal jammers from now until the end of the college entrance examination, which will affect the calls of nearby users. As well as Internet perception, it will return to normal after the exam. The examination room in the information age is naturally indispensable with the addition of mobile phone signal jammers. With this instrument, it is almost impossible to rely on mobile phones. So what kind of instrument is it? The principle of mobile phone (radio communication) is at a certain frequency. Within the range, the mobile phone and the base station are connected by radio waves to complete the transmission of data and sound with a certain baud rate and modulation method. cell phone jammer Scanning from the low-end frequency of the forward channel to the high-end at a certain speed during the working process. This scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.

Mobile phone signal jammers are essentially electromagnetic interference to the wireless network, making the mobile phone unable to access the network, unable to receive signals from the mobile network, and unable to send out information through the network. At present, the development of wireless networks allows users to easily access the Internet and spread information through mobile phones. For example, in the college entrance examination and civil service examination, in order to prevent candidates from using mobile phones to access the Internet, make calls to the Internet, etc., the test center usually puts Cell Phone Signal Jammer For Car. Due to the lack of relevant regulations on the power size and installation location of the jammer, when the mobile jammer is turned on in the examination room, other nearby users may also be affected by the mobile phone signal jammer, causing problems such as dropped calls on the mobile phone and unable to access the Internet.