• 2023-03-03

The annual exam season is coming. The college entrance examination in June and the high school entrance examination in July are often concerned by many people. Different people have different focus of attention. Let's talk about a content that is hardly paid attention to by the public: what role doe...

• 2023-03-02

According to the 5G frequency band standard divided by the International Telecommunications Union (ITU), there are three 5G frequency bands, namely the low frequency band of 700MHz~3.8GHz, the middle frequency band of 3.8GHz~24GHz and the high frequency band of 24GHz~100GHz. Among them, my country u...

• 2023-03-02

About 15 years ago, mobile phone jammers in the examination room began to be used in the school examination process. In the past 15 years, with the upgrading of different mobile phone standards, it has already developed from the original 2G era to the current 5G era. The corresponding mobile phone j...

• 2023-02-25

Today, except for the elderly and children, 5G smartphones have been popularized to the extent that everyone has one. However, due to the need for confidentiality or the requirements of the management system in some special places, it is not enough to carry or use mobile phones at will, except for p...

• 2023-02-24

In recent years, more and more customers have customized and purchased 5G jammers from us. On the one hand, some old customers have replaced and iterated the jamming devices in the original 4G era. Many application scenarios need to solve the problem by installing 5G jammers. Among them, some custom...

• 2023-02-24

In order to prevent some criminals from using common commercial drones to engage in illegal activities such as sabotage, stealing secrets, and terrorist attacks, drone jammers are usually the first key defensive equipment. Then the question arises: What is the basic technical principle of the drone ...

• 2023-02-21

At present, as long as it is a relatively formal or high-profile examination item, it is already commonplace to install mobile phone signal jammers in the examination room. The purpose is to prevent candidates from secretly using mobile phones during the examination. and other wireless communication...

• 2023-02-21

Sometimes, we will receive inquiries from school leaders or teachers: we hope to purchase a batch of mobile phone signal jammers for the examination room, so as to prevent students from cheating in the exam by using wireless communication work during the exam. However, additional requirements are pu...

• 2023-02-18

As we all know, prisons are places where inmates are detained, and mobile phone signal jammers are installed in prisons to prevent inmates from making illegal contacts with the outside world. This point can be understood by ordinary people, but in recent years, why is it necessary to install unmanne...

• 2023-02-17

In a few months, the annual college entrance examination and high school entrance examination will be ushered in. Every few days before the arrival of the examination season, people who are near the school examination room will usually receive text message reminders, reminding them of the time durin...