We all know that the mobile phone signal jammer has a certain amount of radiation. According to this communication principle, the mobile phone signal gsm jammer scans from the low end frequency of the forward channel to the high end frequency at a certain speed during operation. Mobile phones are characterized by network searching, no signal, no service system, etc. Common mobile phone signal shields on the market have the following frequencies: 869~894MHz; 825~960MHz; 1805~1880 MHz and 1900~1990 MHz, etc.
It has been used in all cases, and the feedback after use is believed to be immortal evidence. I think this should be a very convincing case. What is important is that it brings a sense of security to prisons, detention centers, major conferences and other places with high safety factors. After all, the "mobile phone jammer" has guaranteed the information security and contributed to social stability.
The working frequency bands are CDMA800, GSM900, DCS1800 and PCS1900. Select the area where the mobile phone signal is to be cut off, and place the tool on the table or wall in this area. However, as a mobile communication interference device, whether the electromagnetic radiation generated by it will cause harm to human health has become a problem that people are facing. At this time, all mobile phones on site are in the network searching state and the BTS signal is lost.
On the premise of ensuring people's safety and health, decide whether to use it widely in daily life, rather than for the uncivilized behavior of a few people, ignoring or even affecting the interests of the majority. When the mobile phone works, it is within a certain frequency range.For example, in 2004, in order to maintain the solemn atmosphere of the Memorial Hall and meet its special confidentiality requirements, the management department of Chairman Mao's Memorial Hall installed a mobile phone signal shielding system. After practical use and inspection, the Memorial Museum Administration believes that the products meet its requirements in terms of safety, aesthetics and other aspects.
It is very interesting that the mobile phone, as the "enemy" of the mobile phone signal shielding system, also caused a security controversy at the beginning of its launch. However, with the gradual understanding of the mobile phone, people finally accepted the mobile phone. In less than a decade, the mobile phone has become an indispensable necessity in our life, and even the popularity of mobile phones has spawned a new generation: the thumb generation, which can be seen from the popularity of mobile phones. Said jokingly: kitchen knives also have safety problems.
