Does Radiant Barrier Block Cell Phone Signal Block Wireless Devices

At present, the Does Radiant Barrier Block Cell Phone Signal used in the test room are all frequency bands, which can interfere with all frequency bands of 2G/3G/4G/5G of the three operators, and the WIFI signal and Bluetooth signal can also be completely blocked. The above is the principle of mobile phone signal jammer. However, the frequency range of electromagnetic waves is from several Hz to tens of hundreds of GHz, and each segment may be used as a signal for communication. Will there be some special frequency bands used in the examination room? This is true of other radio communication tools, and radio communication tools with dedicated frequency bands "came into being" in this context. The operating frequency bands of these devices are selected outside the frequency range covered by cell phone jammer , and cell phone signal jammers do not work on them. For this special radio communication tool, the examination room is specially equipped with a monitoring vehicle equipped with a radio monitor for real-time monitoring of radio wave signals of unknown origin. So how exactly do radio detectors work? Because electromagnetic waves have the characteristics of "closer and far smaller", by constantly moving the detection vehicle, the monitoring equipment can locate the position of the signal transmitter according to the distance and the strength of the signal, and capture the offenders who use these radio communication tools on the spot. Nowadays, drones have also appeared in the college entrance examination room, which can perform signal positioning faster. Therefore, neither mobile phones nor these special radio equipment can play a role in the college entrance examination room.

The call between the mobile phone and the mobile phone is forwarded by the base station. The mobile phone can make and answer calls mainly rely on the support of the communication base station. After the mobile phone is turned on, it will actively connect to the nearest communication base station, and the communication base station will command it when making and answering calls. In fact, it is all communication with the communication base station. So if the prison wants to interrupt the communication between prisoners inside the prison and the outside world, what needs to be done? Does Radiant Barrier Block Cell Phone Signal The noise generated covers the signal jammer of the mobile phone. The noise is so loud that the base station cannot hear the mobile phone. The answer is actually very simple. Just need a machine with the same frequency as the mobile phone to make noise, so that when the base station tries to connect to the mobile phone . You will find that the signal coming from the mobile phone is too complex and unrecognizable, so it will refuse to communicate with the mobile phone. Based on this principle, when the signal blocker was first developed, everyone was very happy. The prison only needs to be equipped with a few jammers that can emit such noise to block the mobile phone communication within the entire prison. And as there are more and more scenarios that need to block signals. Signal jammers that were originally only designed to be used in prisons have gradually entered normal commercial scenarios, such as important meetings and exams.