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The shielding range of the mobile phone jammer is determined by the environment

Massie Brandon April 08, 2021 10:30

Mobile phone signal jammers are also called jammers, mobile cell phone jammer, signal jammers, mobile phone signal jammers, and signal jammers. It uses frequency multiplication, frequency division, and frequency hopping filtering techniques for the uplink and downlink channels of the mobile phone system. Analysis The required shielding frequency is generated; a spherical shielding space is customized according to the power of the jammer, and the shielding magnetic field is automatically formed within the specified range, so that the mobile phone loses the communication with the base station. When the mobile phone jammer is in the working state, it can disable the signal receiving and sending function of the mobile phone within the specified range, and cannot dial out and dial in, so as to achieve the purpose of mandatory prohibition.

Signal jammers can be used in various places such as examination rooms, conference rooms, gas stations, military powerhouses, libraries, theaters, etc. In our daily life, the most common application place for mobile phone jammers is the exam room. Candidates who have gone through the exam know about signal jammers. Using mobile phone jammers can shield the mobile phone signals around the exam room, making mobile phones unable to communicate and access the Internet. To achieve the role of preventing cheating, to ensure the fairness of the exam.

What is the shielding effect of the mobile phone signal jammer? How to choose a suitable jammer in the examination room?

We know that standard classrooms in schools are generally about 75 square meters. Each teacher can place a signal jammer to get a better shielding effect. The signal jammer is usually placed on the classroom platform, and the shielding distance can be selected when choosing In a jammer of 100 square meters, the shielding effect will be better.

We know that mobile phone jammers used to interfere with the downlink signal of the base station to achieve the purpose of shielding the mobile phone signal. The signal jammer will have a theoretical shielding range, which is about a radius of 0-20 meters. Of course, this is only a theoretical distance. The actual effect should be combined with the surrounding environment of the examination room. Consider the surrounding signal strength, whether there is a signal base station or whether the school has a signal amplifier installed. If there is a base station within 100~200 meters of the school, it will affect the shielding effect of the mobile jammer. If the shielding effect is poor, then you need to consider using more powerful equipment.

If you are a university teacher, you can consider preventing high-power mobile phone jammers or preventing two jammers in the classroom, one after the other, so that the shielding effect will be superimposed and a good shielding effect will be achieved. The use height of the jammer should be 1.5-2 meters, which can ensure the normal use of the signal jammer, but usually when used in the examination room, it will be placed on the platform for the convenience of getting electricity.