cell phone signal jammer
With the rapid development of mobile phones, there are more and more demands for cell phone jammer in major conferences and exams, which promotes a broader market for mobile phone signal shielding. However, due to the lack of sufficient understanding of mobile phone signal jammers by some users, blindly purchasing high-power jammers, there are many potential safety hazards.
The working principle of the mobile phone signal blocker is to send interference signals according to the broadband, so as to interfere with the uplink signal of the mobile phone, so as to achieve the purpose of shielding the mobile phone from working. So, this itself is the origin of the signal. As a signal source, there will be radiation. According to the needs of use, the current transmission power of the shield varies from 1W to 480W. Generally speaking, the larger transmit power of GSM mobile phone is 2W, and the GSM macro base station is usually 20W-40W. Ordinary exams and conferences use shielded transmission power between 10W and 60W.
In fact, for general tests and small conferences, you can get the desired shielding effect by choosing a mobile phone shield with a transmit power of 2W-10W. However, from the survey of large schools and important conference venues, it is found that most occasions tend to pursue high-power shielding unilaterally.
Precautions for the use of cell phone signal jammers:
1. Do not blindly apply high-power shielding. For classrooms, choosing a 2W transmit power shield can meet the shielding requirements.
2. After use, remember to turn off the shield in time to prevent continuous radiation.
3. Be sure to buy a shielding device produced by a regular manufacturer.