what do you think of the jammer detector

The cell phone jammer scans from the low frequency band of the forward channel to the high frequency band at a certain speed during the working process, and forms interference when the mobile phone receives the message signal. The normal data sent from the base station cannot be detected, so that the connection with the base station cannot be established, and there is no signal and no service state. For example, when the mobile phone communicates with the base station, the signal jammer is like a messenger, deliberately making noise around you.

At present, the cell phone jammer used in the examination room are all full frequency bands, which can interfere with all the frequency bands of the three operators 2G/3G/4G/5G, and WIFI signals and Bluetooth signals can also be shielded. The above is the principle of mobile phone signal jammer. However, the frequency band of electromagnetic waves ranges from a few Hz to several hundreds of GHz, and each segment may be used as a communication signal. The noise signal is so large that the mobile phone can't understand what the base station is saying, and the mobile phone can't hear what the base station is saying.

In fact, this is not to shield the mobile phone signal, but to obliterate the signal sent by the mobile phone in a large number of noise signals, thereby achieving the purpose of interference.The working frequency band of these devices is selected outside the frequency range covered by the Jammer Detector, and the mobile phone signal jammer will 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.