dojammer signal blocker

 If you want to make a  frequency jamme r, you can determine how many frequency bands to make based on the WiFi frequency distribution at the site. If the site requires the interference range of the frequency jammer to be relatively small, with a radius of about 10-20 meters, then you can use a low-power frequency jammer module, which can basically meet the requirements of on-site shielding. Of course, it also depends on the distance between the WiFi signal source and the frequency jammer. The closer the mobile phone or WiFi receiving device is to the shield, the better the interference effect will be. The closer the distance between the mobile phone or WiFi receiving device and the WiFi signal source, the worse the shielding effect will be than the same distance at the far end. If the site requires the interference range of the frequency jammer to be relatively large, with a radius of about 20-100 meters, then you can use a medium-power frequency jammer module, which can basi...

 Customers purchase  high-power signal jammers  and are in a hurry to get the goods, so they think of air transport. Why are some items with built-in batteries allowed to be shipped by air, while some items or equipment are prohibited from being shipped by air? That is because batteries are different, and the classification and identification of batteries is also complicated. Some batteries or equipment with built-in batteries may be dangerous goods involving air transport items 4.3, Class 8 and Class 9, while some are conventional ordinary batteries with low battery capacity, which are allowed to be shipped by air. So can things with batteries be shipped by air? It cannot be said that it can or cannot be, but it still needs to be analyzed based on the specific product. So how to determine whether a signal jammer with a battery can be shipped by air? The answer is one: the equipment to be shipped by air must have an appraisal report issued by a professional appraisal agen...

 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 ...

 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...

 When people choose  cell phone signal jammers , they often cannot confirm the quality of the jammers by just looking at the appearance, and they are worried that they will buy jammers of poor quality. Here is how to distinguish the quality of jammers. First, the most intuitive way to distinguish the quality of mobile phone signal jammers is to disassemble the device, from the device shell to the internal components, to see whether the design is reasonable and scientific, and whether the product's availability, durability and practicality are fully considered. While seeing the internal structure of the device, you can also see whether it is a conscientious merchant and whether the components on the PCB board are second-hand devices. If it is such a merchant, you can directly enter the procurement blacklist. Second, it is the brand of mobile phone signal jammers. There are many brands of jammers on the market now, but there are not many brands of jammers that are truly powerful...