The examination room uses a full-band jammer, which does not affect the normal performance of candidates
In order to protect the interests of the vast majority of candidates and improve the fairness of the exam, necessary restrictive measures must be taken against the cheating of a few people. The exam management department has adopted the method of installing a full-band jammer.
During the examination period, the examination room and the surrounding environment of the examination room will be closely monitored in all directions. The monitoring stations and monitoring vehicles will all enter the state at that time, and will conduct comprehensive monitoring on some radio frequency bands. Once abnormal signals are found, full-band jammers will be taken immediately Jamming signal measures block the signal. In addition, technicians can also judge the direction according to the direction finder, and assist relevant departments to seize cheaters.
Some parents of candidates feel uneasy about this, worrying that it will affect the normal performance of their children in the college entrance examination. In fact, the parents of candidates have no concerns about this aspect at all. These devices will not cause harm to the bodies of candidates and test staff, and this full-band cell phone jammer can be completely silent, and will not affect the normal performance of children's college entrance examinations. play.
Whether any kind of electromagnetic wave emitting equipment is harmful to the human body depends on the specific absorption rate of the human body to electromagnetic waves. The radio frequency radiation safety standard SAR recognized by the International Non-ionizing Radiation Protection Committee is up to 2.0, and the standard in my country is 1.5. The transmission power of the current wireless communication base station transmission tower is generally 40W~50W, and the specific absorption rate value of the human body for electromagnetic waves is below 1.0 when the distance from the transmission tower is 20 meters to 30 meters. The full-band jammer used in the examination room is a micro-power device, and its transmission power is generally less than 3W. In this case, the specific absorption rate of electromagnetic waves by the human body is negligible. Therefore, the full-band jammer used in the examination room does not pose a hazard to human health.
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