Can a high-power cell phone signal jammer be used to shield the entire teaching building? from dojammer's blog

In general, it is not recommended to use a high-power cell phone signal jammer to shield the entire teaching building. This is because it cannot be ensured that the entire teaching building can be completely shielded by using a high-power mobile phone signal jammer. Even if a high-power cell phone signal jammer is used to shield the entire teaching building, there will be some areas where mobile phone signals cannot be shielded.

However, in some specific cases, using a high-power cell phone signal jammer to shield the entire teaching building can also achieve a shielding effect. For example, during the high school entrance examination and the college entrance examination, the use of a high-power mobile phone signal jammer to shield the entire examination room during the short three days of the high school entrance examination and the college entrance examination can completely achieve a shielding effect. This is because, during the high school entrance examination and the college entrance examination, the relevant departments of the government at all levels across the country must take joint action to ensure that these candidates can successfully complete the examination, including public security, transportation, non-management committee, education bureau, examination institute, communication operators and other relevant departments or organizations, all of which must perform their duties to ensure that the high school entrance examination can be successfully concluded.

Among them, the public security is responsible for maintaining order, the traffic is responsible for directing traffic, the radio management committee is responsible for purifying the radio signal environment around the examination room, and the communication operator is responsible for reducing the signal strength of all base stations within a few kilometers around the examination room or choosing to directly shut down the base station. The size of the shielding range of the cell phone signal jammer, or the quality of the shielding effect, depends on the strength of the mobile phone signal in the examination room.

The communication operator reduces or shuts down the base station signal within a few kilometers around the examination room in order to reduce the signal strength in the examination room to ensure the shielding effect of the mobile phone signal jammer, thereby purifying the radio environment in the examination room and preventing some unscrupulous candidates from using radio to cheat or transmit answers. I believe everyone will also notice that the operator will push text messages during the college entrance examination to inform that the cell phone signal jammer is used in the examination room, and the mobile phone will be disconnected from the network at that time.