The frequency jammer used in the examination room will not affect the normal performance of candidates
In order to safeguard the interests of the vast majority of candidates and improve the fairness of the examination, necessary restrictive measures must be taken against the cheating of a few people. The examination management department has adopted the practice of installing frequency jammers.
During the examination, the examination room and its surrounding environment will be closely monitored in an all-round way. All monitoring stations and monitoring vehicles will enter the state at that time. Some radio frequency sections will be fully monitored. Once abnormal signals are found, frequency jammer interference signal measures will be taken immediately to block the signals. In addition, technicians can also judge the direction according to the direction finder and assist relevant departments in detecting cheaters.
Some examinee parents feel uneasy about this and worry that it will affect their children's normal performance in the college entrance examination. In fact, the parents of examinees have no concerns in this regard. These devices will not cause harm to the bodies of examinees and examination staff. Moreover, this frequency jammer can be completely silent and will not affect the normal play of children's college entrance examination.
Whether any kind of electromagnetic wave transmitting equipment is harmful to human body depends on the specific absorption rate of electromagnetic wave by human body. The maximum RF radiation safety standard SAR recognized by the International Committee on non ionizing radiation protection is 2.0, and China's standard is 1.5. At present, the transmission power of the transmission tower of the wireless communication base station is generally 40w~50w, and the specific absorptivity of the human body to the electromagnetic wave is below 1.0 when it is 20 to 30 meters away from the transmission tower. The frequency 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 very small. Therefore, the frequency jammer used in the examination room is not harmful to human health.
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