The arrival of the 5G era has brought great convenience to people, and the speed of mobile phone networks has increased to a new level. But it also caused some problems. In 2021, a college entrance examination candidate in Hubei Province took a picture of the question with a mobile phone and uploaded it to the search APP to find the answer when taking the mathematics test. The college entrance examination room usually turns on the wifi jammer, so why does the candidate's mobile phone still have a signal? The reason lies in 5G
A cell phone has a signal because it can be connected to a base station by radio waves. Complete data and sound transmission with a certain baud rate and modulation. What the wifi jammer device needs to do is to scan from the low-end frequency band to the high-end frequency band at a certain speed during the normal connection between the mobile phone and the base station, and form garbled interference when the mobile phone receives signals. , The mobile phone cannot detect the data sent by the base station, so the connection cannot be established, and there is no signal. However, because the traditional wifi frequency jammer has not increased the frequency band to block the 5G signal, it has caused the candidate to use the 5G mobile phone to cheat.
The latest listing of 5Gwifi jammer
Jammer mart latest product, EO2201US (5G+2.4G+GPS) wifi blocker, can effectively shield GSM/DCS/CDMA/PHS/3G (TD-SCDMA/CDMA2000/WCDMA)/4G/5G/2.4G/5.8GWIFI The frequency band can not only block the traditional mobile phone signal frequency band, but also add a new 5G signal frequency band. The shielding can effectively prevent candidates from cheating in the exam by using the latest 5G frequency band, solving the problem at the root, and giving candidates a fair and pure land.
This wifi frequency jammer can not only achieve the full frequency band including the 5G frequency band but also has a wide shielding range (effective shielding distance of 20 meters, can cover more than 100 square meters of classrooms), stable shielding effect (can continue to Stable work, no intermittent situation), quiet and noiseless. (completely silent during work, will not produce sound pollution to examinees and affect the performance of the test) and safe and reliable (equipment characteristics meet the requirements of electromagnetic radiation, absolutely safe for the human body) and other advantages, it is the first choice of signal shielding device in the examination room.