Can Copper Wire Mesh Block Cell Phone Signals Prevent Secret Leaks
Churches in capitalist countries, they are located in a noble area, all uncivilized personal behavior should be strictly prohibited, and the ringing of the bell will disturb other people's personal behavior for a week, this is not civilized behavior. As a result, many cathedrals maintain a quiet and quiet atmosphere in order to maintain the gods, and install Can Copper Wire Mesh Block Cell Phone Signals to block data signals when needed. You can imagine loud and ignorant answering the phone. As a result, affecting the frequency of mobile phones can effectively solve the problem of pretending to be deaf in a Christian church. The prison cell is a criminal area, and there may be terrorists in it. Since many people should be strictly forbidden to communicate with the outside world, they should not be allowed to use mobile phones and other electronic products to communicate with the outside world, so as to prevent them from creating threats to the security of the prison cell, so the prison cell should be used. Cell phone jammers can prevent this from happening. In order to better avoid covert communication between prisoners and visitors, cell phone jammers will help.
Due to the rapid development of wireless network, it has now developed to 4G network, and many test rooms use older mobile phone jammers, and they are helpless with 3G and even current 4G networks. The cracking method: use 3G or 4G cards—— I feel like there is no 2G network anymore. Because the working principle of the school's mobile phone blocker is to block the mobile phone by interfering with the mobile phone signal of the designated band, as long as the receiving and transmitting frequency of the mobile phone is modified, it can be prevented from being blocked. cell phone jammer only blocks the mobile phone signal of 900-1800MHZ, while the mobile phone's receiving and transmitting frequency The frequency is 850-1900MHZ, which is much larger than the shielding range of Can Copper Wire Mesh Block Cell Phone Signals , so as long as the receiving and transmitting frequency of the mobile phone is adjusted to the maximum in the mobile phone settings, the mobile phone signal can be received normally. This method has relatively high environmental requirements, and the premise is that there must be an available wireless network around. Some cell phone signal blockers cannot block WIFI signals, but can communicate with the outside world.