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Cell Phone Signal Jammer Pepper Shaker

Iskander Alex 2021-08-17

However, the news of "maybe due to 5G signal shielding loopholes" immediately attracted attention on the Internet. Netizens mainly focused on two points: At the moment, 5G mobile phones and 5G signals are not new. Why do the examination rooms involved in the incident have omissions in signal shielding? Is this kind of omission a case or does it exist in other examination rooms? According to regulations, during large exams, Cell Phone Signal Jammer Pepper Shaker is installed in the test center to shield electronic signals and prevent possible electronic cheating. In this regard, an operator technical person, the person introduced, signal jammer The working principle is to send out a signal in a specific electromagnetic wave frequency band, which interferes with the normal communication signal of the mobile phone. In this incident, candidates can upload pictures to the Internet through their mobile phones in the examination room. Two situations cannot be ruled out: First, the candidate's location is not within the effective distance covered by the signal jammer; second, the signal jammer The affected frequency does not cover all communication frequency bands used by all operators, and candidates may connect to the Internet through a certain frequency band.

According to the person’s analysis, if the test site uses Cell Phone Signal Jammer Pepper Shaker is designed for the mainstream communication frequency at the time of the factory, and does not consider the new 5G network, it may not be able to fully shield the 5G signal. “5G mobile phones have been on the market the year before and have been used in large quantities last year. , Signal jammer equipment needs to keep up with the development of the times." A signal jammer is a device that sends signals to the same frequency. If the shielding is turned on, when the cell phone signal area is disabled, the interference part is successful. There are now more and more mobile users, so compared with electronic devices, mobile phone signal jammer devices have become civilian use, thereby interfering with mobile phone signals in specific locations that are disabled. Signal jammers are used to protect the phone from receiving signals. The mobile phone signal shielding device broadcasts the signal of the same frequency to the GSM modem. If the cell phone signal is blocked, the interference is considered successful. A cellular phone is a full-duplex device that can use two frequencies at the same time. One is talking, the other is monitoring. The signals are processed simultaneously. Signal shielding can only block one frequency at a time, which causes both frequencies to be blocked because the mobile phone thinks that there is no service in this area because it can only get one of the frequencies.