Cell phone jammer is dependent on signal strength of field working environment

As the antenna radiation angle determines the radiation intensity, radiation intensity in the axis part of the largest, if the deviation from the main lobe, the radiated power will drop dramatically, and the corresponding impact on the human body will be significantly reduced.    cell phone jammer    can block the signals within the specific range.Coupled with the requirements of the area will be shielded walls (usually electromagnetic waves through a brick wall there will be more than 10dB attenuation) or facilities, they are different levels of signal attenuation on the screen, so the installation of   cell phone jammer, as long as rational use of the antenna, the antenna main lobe often deviate from the area to stay, after the installation of cell phone jammers on the human body is electromagnetic environment without causing harm.
Analysis of the prison cell phone screen cell phone with the improvement of prisons and improving prison shielding Analysis Overview of a cell phone screen. Prison phone shield outlined in order to fit the new situation, to improve prison technology to prevent the ability to enhance the prison technology management, and promote digital prison construction, and promote prison harmonious and stable development, and continuously improve the prison's level of modernization, the need for prison cell phone signals for scientific effective control and prevention, to prevent illegal use of mobile phones because of potential safety problems.The jamming radius range of   cell phone jammer is dependent on signal strength of field working environment.