How does the mobile phone signal jammer in the examination room work?
Regarding some signal interference equipment, it can directly perform interference shielding processing on the signals of various electronic communication equipment on the market, and it has been applied in many places. The most widely used place is in school examinations, prisons, detention centers, and meetings, where it can often be seen. After the changes of the times, today's information dissemination speed is very fast. With a mobile phone through some communication software and networks, the information sent in the blink of an eye can be spread to all corners of the world. For some environments such as the test room, mobile phones cannot be used, so it is very necessary to use the cell phone blocker for the test room dedicated to the school test at these times. What principle does the mobile phone signal jammer in the examination room use to interfere with the mobile phone signal?
Before that, let's first understand the principle of communication equipment. The base station is in a certain working range, through the wireless signal technology and the mobile phone must be frequency modulated to complete the information transmission. For the above content, the mobile phone signal jammer in the examination room uses a certain speed to scan from the low frequency band to the high frequency band in the forward channel during work. As a result, the normal use of the mobile phone is interfered, and the signals received by the mobile phone within the working range of the signal interference device form garbled codes. The mobile phone cannot receive the normal data signal transmitted from the base station, and naturally cannot continue to use it.
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