Recently, a customer inquired about the need to configure a mobile phone signal jammer for the test room project. However, there are many base stations near the test room. There are 8 base stations within a radius of 300 meters. How should mobile phone signal jammers be arranged on this site?
The reason why the cell phone signal jammer can interfere with the cell phone signal is because the signal emitted by the jammer is in the same frequency band as the cell phone signal emitted by the base station, the signal emitted by the base station is to provide services to the cell phone, and the signal emitted by the jammer is white noise Signal, also known as interference signal, within the coverage area of the jammer, if the signal strength of the mobile phone is not as strong as that of the interference signal, the mobile phone cannot recognize the signal of the base station, so that the mobile phone cannot connect to the base station and cannot obtain the service of the base station. Status such as no signal or limited service will be displayed.
Then, there are 8 base stations within a radius of 300 meters near the test room, and the straight-line distance from individual base stations to the test room is within 100 meters. In such a situation, it can basically be determined that the test room cannot interfere with the mobile phone signal through normal channels. The base station is too close, and the signal from the base station to the test room is very strong. Low-power mobile phone signal jammers are basically ineffective in this scene. Even if a high-power cell phone jammer is used, the interference range is limited, and it is unlikely to configure too many high-power machines. After all, the greater the transmit power, the higher the cost of the equipment.
In this case, there is still a way to interfere with the mobile phone signal. You can coordinate with the operator, adjust the transmit power of the base station, or adjust the direction of the antenna on the base station so that the main lobe of the antenna does not face the examination room. This approach is to reduce the signal strength in the examination room, so that the true role of the mobile phone signal jammer can be played. Under normal circumstances, coordination and processing can only be performed from the perspective of the base station. If it is during the middle and high school entrance examination, generally this situation does not need to spend too much thought, because during the middle and high school entrance examination, all relevant departments will cooperate and operators will also participate. At this time, the base stations around the examination room will basically conduct Adjust, then use the cell phone signal jammer to meet the purpose of jamming the cell phone signal.