Build A Cell Phone Jammer

What is a cell phone jammer? In fact, this is a high-tech device that isolates all electronic signals within a certain range. The effective range is generally about 0 to 30 meters. Although the specific effects of different models on the market are different, Some are more powerful, and some are relatively inferior, but the basic principle is the same, that is to isolate all cheating methods of electronic signals, so that candidates can take the exam in a fair environment, and try to ensure that each candidate's The results are real and effective, and it is also one of the most useful means of countering the "black technology" that is proliferating today. As a kind of high-tech machinery and equipment, Build A Cell Phone Jammer The requirements for suppliers are also very high. If they are not produced by high-tech manufacturers, the effect is undoubtedly not guaranteed. Provide high-tech and high-performance for many schools The mobile phone jammer is also a great contribution to the construction of a perfect examination room environment.

First of all, it is clear that Build A Cell Phone Jammer can shield 4G network signals. When the mobile phone works in a certain frequency range, the mobile phone and the base station are connected by radio waves, and the data and sound transmission are completed with a certain baud rate and modulation method. In response to this communication principle, the mobile phone jammer scans from the low-end frequency of the forward channel to the high-end at a certain speed during operation. This scanning speed can cause garbled interference in the message signal received by the mobile phone, and the mobile phone cannot detect the normal data sent from the base station, so that the mobile phone cannot establish a connection with the base station. The mobile phone is manifested as a search network, no signal, no service system and other phenomena.