dojammer signal blocker

 With the rapid development of 5G technology, 5G networks have been widely used around the world. However, in certain specific occasions, such as schools, prisons, examination rooms, etc., 5G signals need to be shielded to ensure fairness, safety and order. Therefore, as an emerging electronic device, the importance of 5G Jammer is becoming increasingly prominent. The working principle of  5G Jammer  is based on electromagnetic interference technology. It forms a high-intensity electromagnetic field by emitting radio waves with the same or similar frequency band as the 5G communication band. When these waves meet the 5G signals received by mobile devices such as mobile phones, an interference effect will occur, causing the signal strength to weaken or even disappear completely, thereby shielding the 5G signal in the area. This process is similar to the sound emitted by two different sound sources meeting at the same frequency, which may cause interference and cause sound ...

  Signal jammers , as a device that can interfere with and block wireless communication signals in a specific frequency band, have been widely used in many fields in recent years. It is like a double-edged sword, playing a positive role in ensuring communication security and maintaining order in the examination room, but it also brings potential communication interference and legal risks. In the examination environment, signal jammers have become a powerful assistant to prevent cheating. By blocking the signals of wireless communication devices such as mobile phones, it effectively curbs the behavior of candidates using high-tech means to cheat, and maintains the fairness and impartiality of the examination. In addition, in sensitive places such as military and government, signal jammers are also used to prevent illegal eavesdropping and signal interference, and ensure the safe transmission of important information. However, the use of signal jammers is not without controversy. On ...

 Every year, there will be a listening test in the CET-4 and CET-6 exams. Before the exam, the examination room will turn on the  cell phone signal jammer  to interfere with the mobile phone signal in the examination room to prevent candidates from cheating in the exam using communication tools. Many schools reported that after turning on the mobile phone signal jammer, there was a certain degree of interference to the campus radio. The radio signal interference in some areas was serious. After turning off the mobile phone signal jammer, the interference disappeared. Let's talk about the reasons for this situation and how to solve it. First of all, campus radio is a kind of low-power FM radio. Many colleges, middle schools and even schools have now adopted campus FM radio to broadcast English programs or other programs. The frequency range is usually between 76-88MHz. The signal emitted by the mobile phone signal jammer is a white noise interference signal with the same f...