With the popularity of mobile phones, the demand for mobile phone signal shielding has also increased significantly, so mobile phone signal shielding devices naturally have a broad market. However, everyone lacks understanding of cell phone jammer, and often choose high-power jammers for good results, which causes many hidden dangers.
The mobile phone signal jammer transmits interference signals through broadband to interfere with the mobile phone signals. It is a signal emission source in itself. There is radiation in nature. The current use needs, its transmission power ranges from 1W-480W, you can make a comparison, the maximum transmission power of GSM mobile phones is 2W, and the usual transmission power of GSM macro base stations is between 20W-40W. The transmission power of the shielding device generally used for examinations and meetings is between 10W-60W.
Usually for general exams and small meetings, choosing a 2W-10W mobile phone jammer will achieve good results. However, according to our investigation of major schools and important meeting places, many places are often one-sided pursuit of high-power jammers. For example, a school with more than 20 classrooms installs a jammer in each classroom and selects them. It has a 30W transmission power, and after the test, due to inadequate use, a small number of shielding devices are not closed in time, and the transmission continues for several weeks. Especially in a certain elementary school, after a certain exam, the shielding device has not been turned off for 2 weeks. It was not until we checked the scene that the shielding device was continuously turned on on the podium side of the classroom full of pupils in class! This really made us sweat!
Therefore, I strongly appeal to all major units that need to use cell phone signal jammers:
1. Do not blindly choose a high power jammer. For a classroom, choosing a jammer with a 2W transmit power is enough to achieve the shielding effect.
2. After finishing use, be sure to close the shield in time to avoid continuous radiation.
3. Be sure to choose a shielding device produced by a regular manufacturer. The shielding device produced by an informal manufacturer often deliberately increases the transmission power in pursuit of a good shielding effect.