How does a mobile phone signal jammer block mobile phone signals?
When some friends enter some areas where mobile phone signal jammers are installed, they will find that their mobile phones will display no signal, no service, etc., but there are still some friends who don’t know how this cell phone signal blocker blocks mobile phone signals. The following editor will take you to understand.
At present, there are two forms of interference with mobile phone data signals:
1. One way is the same as the principle of network TV. Put the mobile phone in a packaging bag made of copper mesh cloth. At this time, the external wireless signal will be isolated by the copper mesh cloth and cannot enter the bag. The mobile phone cannot receive external signals, and the mobile phone is blocked without signal.
2. Another reason is that when we enter a range, there is no signal on the mobile phone.
In fact, the manufacturer of mobile phone signal jammers tells you that the working method of shielding-the mobile phone signal jammer will emit electromagnetic wave interference signals with the same frequency as the mobile phone signal, and the signals it releases will interfere with the normal signal received by the mobile phone. This will cause the mobile phone to be unable to recognize normal signals, and the mobile phone will display no service, no signal and other states. At present, in the sales market, mobile phone signal shielding equipment all works according to the second method. In fact, the basic principle is so simple, but it is illegal to use the frequency band without permission, and it is not easy to cause economic benefits, but now schools have gradually used it to prevent it.
Working principle of mobile phone signal jammer: What is the specific principle of harming the mobile phone data signal drop? When the mobile phone receives the signal, the mobile phone first sends the login information to the base station. After the mobile phone successfully logs in to the base station, the base station will provide services to the mobile phone. At this time, the transmission of information between the mobile phone and the base station is through radio waves. The transmission of radio waves is at a certain baud rate. As long as the radio wave is interfered, the mobile phone signal can be interfered.
According to this communication principle, under the premise of working, the data information in the signal jammer for wifi should output power at a certain speed and derive the high-end scanner of the channel. The scanning speed will interfere with the data signal of the mobile phone receiving protocol type. The mobile phone cannot detect the traditional data information transmitted by the base station, making the mobile phone unable to establish a connection with the base station. The mobile phone is specifically manifested as network search, poor signal, no service system, etc.
During the work process, the mobile phone signal jammer should scan the low power of the trend wireless channel to the high end. The scanning speed will damage the error code in the data signal of the mobile phone receiving protocol type, and the mobile phone cannot detect the traditional data information transmitted by the base station, making the mobile phone unable to establish contact with the base station, so as to ensure the purpose of shielding the mobile phone data signal.
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