With the widespread use of mobile phones, the demand for mobile jammer in various conferences and examinations has increased, and there are various types of mobile jammer in the market. Most people understand that it is relatively simple. In order to achieve a particularly obvious effect, they choose a mobile jammer with a particularly high power, which causes many hidden dangers. The principle is to interfere with the work of the mobile phone by transmitting interference signals over a wide frequency to interfere with the mobile phone signal. According to the current use demand, the transmission power varies from 1W to 100W. How strong is this transmission power? For example, the CDMA power is 2W, and the normal transmission power of the CDMA macro base station is between 20W and 40W. It is generally used in classrooms or places with a small area, and the transmission power is between 10W and 50W.

In general, for classrooms and small conference rooms, choosing a 2w-10w low-power network shield can achieve a good interference effect. However, according to our on-the-spot investigation of major schools and important meeting places, many unprofessional people will pursue high-power equipment. For example, in a school with more than 30 classrooms, each classroom is equipped with a mobile jammer, and 40W transmission power is selected. Moreover, after the examination, due to the non-standard use, a small number of equipment has not been shut down in time and has been running continuously for several weeks. Especially in a junior high school, after the examination, it continued for one week without passing. It was not until the on-site investigation that the equipment was still running. It is recommended to pay attention to the following issues in purchasing network shielding:

According to the actual situation, choose the equipment of the power university. For a classroom, choosing a 2W transmission power is enough to achieve the interference effect.

Close it in time after use to avoid continuous radiation. Select the manufacturer produced by the regular manufacturer, and the equipment produced by the irregular manufacturer deliberately increases the transmission power in order to achieve good interference effect.