cell phone jammer circuit can mask the signal

Compared with internal interference, the interference range of the same fog used externally should be doubled. If the interference range is less than 200 m, it is usual to install a cell phone jammer, which can be mounted on the inner wall, 1-1.8 m above the ground; If more than 200 meters, usually two or more units need to be installed and mounted on the front and rear walls; If the interference space is outside and greater than 1000 m, multiple cells should be used and honeycomb distribution is better.The college entrance exam will change the fate of most people. The state also ensures fairness and fairness in college entrance exams by regulating behavior. Cheating on college entrance exams can also be prevented by using various advanced technologies. With the development of science and technology, various methods of deception have developed over time. Wireless transmission, Bluetooth headset... Even the latest fad for drones can be a tool for cheating.

If you're in the vicinity of the venue, you'll be sure to receive a text message that reads in big letters: "In order to create a fair and equitable environment, the competent authority of activeront's Cell Phone Jammer Circuit protects the device's communication signal for all venues in the city during the test period." The quality of telephone and Internet access suffers, such as frequent call failures, connection failures, intermittent voice calls, slow Internet access for mobile phones, or frequent disconnections. So, do you know the principle of wireless mobile signal shielding? How effective is signal fog in activating college entrance exams? Invigilators at the entrance waved a metal detector.