Mobile phone jammer power size: generally divided into low power, medium power, and high power. Low power: total power 3W-80W. Medium power total power 80W-160W, high power: total power 160W-800W. Except for special occasions, it is generally not recommended to use high-power mobile cell phone jammer, which will seriously interfere with the base station signal transmission and also have a certain degree of radiation to the human body. For educational examinations, it is recommended to use low-power in standardized examination rooms and conference rooms. Even if a low-power one cannot achieve the effect in some places, you can choose multiple cellular layouts. This effect is better than using a single medium power or high power, and the radiation is not that big.
For the uplink and downlink channels of the mobile phone system, it uses techniques such as frequency multiplication, frequency division, and frequency hopping filtering to analyze the required shielding frequency; customize a spherical shielding space according to the power of the mobile phone jammer, and automatically form a shielding magnetic field within the specified range , So that mobile phones (including PHS-PHS-GSM-China Unicom, China Mobile, CDMA-China Telecom) mobile phones in this space are invalid. When the mobile phone signal jammer is in working condition, it can disable the signal receiving and sending function of the mobile phone within the specified range, and cannot dial out and dial in, so as to achieve the purpose of compulsory prohibition.