For example, in the application field of communication signal shielding system software in general conferences, participants come and go in a hurry, and there is almost no time to "find" the blind spot of communication signal shielding. However, in the confidential information or unique natural environment, the total number is gathered and the activities are concentrated. According to the loopholes in the natural environment system, it is not certain that no criminals will engage in personal behaviors that violate the law and discipline. At this time, it is necessary to use the signal shielding device of 5g mobile phone for further shielding to ensure that the blind spots within the signal shielding range in the natural environment are minimized.
How much do you know about the "5g signal shield" in the college entrance examination?
Is it necessary to apply mobile communication technology to jammer? Nowadays, the emergence of supervision and mobile phone detection doors has eliminated many hidden dangers that disturb discipline for key places such as examination rooms, so that students can ensure that all communication equipment can be brought into the examination room when they enter the examination room, and all students can participate in market competition under fair and just conditions. However, there are still more or less "stragglers". Now it is applied to the mobile communication technology jammer to completely construct a fair and reasonable natural environment for the examination questions!
The basic principle of mobile communication technology jammer is actually not very difficult. As a mobile communication technology machine, the mobile phone should first establish a connection with the surrounding communication base stations, then connect the base station equipment, and then find the communication arrival station. In the whole process mentioned above, all information content is installed and transmitted according to radio waves. The frequency band of radio waves commonly used in mobile phones is related to the common style of mobile phones and their operators. But in general, the radio frequency bands used by the three operators are in the range of 850-4900MHz.
If the exam planner wants to block the cell phone signal in the examination room, it is unlikely that the communication base stations of 2G/3G/4G/5G operators around the examination room will not work, otherwise the communication equipment in this area will be hemiplegic and unable to communicate normally. However, operators cannot be blocked, so the only way is to block the cell phone signal in the examination room. Shielding mobile phone signals can reasonably avoid the use of mobile phone fraud, and then avoid all fraudulent personal behavior.
Generally speaking, the efficiency range of jammer is less than 25m. Ideally, a machine and equipment can provide interference with a total area of 100m2. The total output power of jammer should not exceed 20W, otherwise it will cause a certain radiation source to human body, and long-term contact with radiation source will cause harm to human body. Therefore, in the case of purchasing jammers, we should not only consider the efficacy category, but also consider the output power of machinery and equipment.