Can wired networks be shielded by electronic jammers?
The electronic jammer adopts backpack design, which is easy to carry and flexible in application, especially suitable for emergency, transition, temporary control and other use needs;
It is generally used in large and medium-sized examinations. The common security equipment in the examination room can effectively prevent candidates from cheating through mobile phones, walkie talkies and other communication devices. Therefore, many schools will use electronic jammers to maintain the order of the examination room and ensure the fairness of the examination room.
When the mobile phone works, it exchanges information with the base station within a certain frequency range to achieve the normal use of the mobile phone. In view of this communication principle, the electronic jammer scans from the low end frequency of the forward channel to the high end at a certain speed during the working process. In the communication process between the mobile phone and the base station, the mobile phone cannot be connected to the base station because of the interference caused by the signal transmitted by the electronic jammer. The mobile phone shows no service.
Electronic jammer is a special instrument for shielding (i.e. jamming) wireless signals. According to its working principle, the signal shielded (interfered) by the jammer is not only a wireless signal, but also an invisible transmission signal in the air. This can also indicate its principle and characteristics, that is, shielding (jamming) the wireless signals of some specific operating frequencies or frequency bands. The signal transmission of cable network is through cable connection, such as common cable network (network cable), cable TV, cable telephone, etc. The section of signal transmission is cable. Therefore, when the electronic jammer works normally, it will not cause signal interference to the wired network. In other words, the frequency jammer cannot shield the desktop computer using wired network.
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