Among the individuals or units that use cell phone signal jammers, the use of cell phone jammers in school exams is to prevent exam fraud, and the use of cell phone jammer at venues is for the quietness of the venue or the confidentiality of meeting information. These are all out of good wishes and purposes. But there are also those for selfish interests. For example, the head of a household who operates a public phone may use a mobile phone signal jammer to interfere with the mobile communication base station near his business location, so that the mobile phone cannot be used by those who do business near the public phone they operate, and the change is made. Use public telephone calls to increase your financial income. In addition, mobile communication operators may also use cell phone signal shielding devices to harm the interests of each other, so that they can gain an advantage in some local competition in the same industry. In addition, cell phone jammers can easily be added with software to become a veritable eavesdropper.
The above is the purpose of using a mobile phone signal shielding device, but no matter how grand the purpose is, it cannot be exchanged at the expense of public mobile communication. In fact, according to research, it is possible to install cell phone signal jammers without affecting the normal use of public mobile communications:
There are three reasons for the mobile phone signal jammer to disturb the signal of the mobile communication base station:
First, the users of the mobile phone signal jammer have completely ignored the communication needs of outsiders, and the target is wrong. The mobile phone communication should be restricted for a small number of people (such as candidates), but the target is expanded to the surrounding people.
Second, the use method is improper, because the mobile phone signal shielding device is not installed properly or the transmission power is set too large, it should be controlled in a small range but not properly controlled.
Third, the mobile phone signal jammer purchased by the user does not meet the approved standards for radio equipment, the power exceeds the standard, or the inferior substandard product.
Find out the reason, in order to overcome its influence on the mobile communication signal, it is actually very simple: first, use the standard products produced by regular manufacturers, secondly, choose the installation location and direction of action, and thirdly, set the appropriate transmit power. , it is enough to limit its transmission signal to a small closed area. As long as the above three points are achieved, the impact on the nearby mobile communication base stations can be minimized, and at the same time, it will not affect the normal communication of the surrounding people.