Then according to the above working principle, we can conclude that the 4g mobile phone signal jammer is generally composed of power supply, electronic scanning control unit, segmented radio frequency module unit, amplifier unit, transmitting antenna unit and other parts. After t

In order to ensure the information security of important places and important positions, many secret-related units will install mobile phone signal jammers in some sensitive areas in accordance with relevant management regulations and requirements. When the mobile phone signal ja

With the development of mobile Internet technology, mobile phones have become an important channel and tool for us to contact the outside world and obtain information. The biggest feature of the army is its closed management. Compared with outsiders, soldiers know less about what

Since the shielding instrument has been trusted by the examination room and other government agencies, do you know what the full-band shielding instrument does? What are the best-selling shielding instruments? Let me introduce to you how to choose a signal shielding instrument. H

In some special occasions, the use of mobile phones is restricted. The most common method is to install a full-band shielding device on site to block mobile phone signals. However, there are always people who think about how to crack and make their mobile phones work normally. Th

As we all know, in many occasions in life, it is very inappropriate to use mobile phones such as exams, meetings, etc. In this case, in addition to collecting mobile phones in advance, a stable full-band

The strong mobile phone signal at the site is generally because the surrounding base stations are close to each other, and there is an indoor mobile phone signal distribution system installed in or around the building, referred to as a mobile phone signal amplifier. According to

In some occasions, such as meeting rooms, movie theaters and other places, in order to maintain order and a quiet environment, mobile phone signals are usually shielded. The most common and effective way to limit the use of mobile phones is to use a

A: shielding range associated with protection against a strong electromagnetic field, the distance between the communication stations concerned. In general, the top 200 meters. Manufacturers are testing the general case, the shield will be a little out of range.

1. For the actual combat scene of bomb disposal and EOD, the electronic