Normally, the smallest area where mobile phone signal is blocked is tens of meters around. If there are enough signal blockers, the largest one is unlimited. Otherwise, how can the detention center achieve all signal blocking.
The area where our mobile phone signal is blocked depends on your frequency modulation area. Generally, one type of housing of 120 square meters is enough. Chengdu 8341 Electronics has a variety of signal jammers. You can also check it out.
Our mobile phone signal shielding area is based on the power of the signal jammer. As long as the local environmental signal strength is different when testing at the application site, if the indoor signal is weak, the area will be larger. The accessories for external use include GSM. Communication signal towers and so on, so the GSM signal is nearby in the outside area!
Actual analysis shows that when our cell phone jammer is working, as long as the transmission power is too large due to improper setting, in a small area of multi-functional halls, teachers, etc., the electromagnetic waves will be superimposed in the narrow area and pass through the original and Multiple reflections from external walls, ceilings, and floors will expose people in the room to severe electromagnetic pollution.
According to the survey, the college entrance examination and the high school entrance examination are the occasions where our mobile phone signal blocking is used most. However, in some examination rooms where our mobile phone signal blocking is used, the parties concerned (college entrance examination inspectors, candidates and teachers) become irritable and unable to concentrate. Some candidates even experienced headaches. There are various indications that if our mobile phone signal shielding transmission power is turned on too high, it will seriously affect the normal thinking of candidates in the examination room.
When you really need to use a jammer, try to use low-power mobile phone signal shielding. If one can solve the problem, don't set up multiple jammers. The lower the installation position, the better. Do not hang it above people's heads. This is very harmful to human health.
During the provincial agricultural modernization work conference, we set up our mobile phone signal shielding and placed it among the flowers on the ground beside the wall of the multi-functional hall. It not only achieved the best effect, but also did not affect the beauty of the venue. It can be said to be the best of both worlds.