The customer passed a field test on a user site and found that the mobile phone signal jammer could not achieve the expected effect on some mobile phone signals on site, only two to three meters away. After consultation and observation, there are a large number of antennas for indoor signal distribution systems in the corridor ceiling, and after testing, the signal is very strong. Anyone who knows about mobile phone signal jammers can interfere with mobile phone signals because they emit white noise signals with a certain signal strength. If the mobile phone signal can be covered on site, it can interfere with mobile phone signals. If the signal strength of this jammer is lower than the mobile phone signal on site, it cannot interfere with mobile phone signals.

Based on the situation of this test, what should be done? Next, I will introduce the solution for your reference only.
1. After confirming that there is indeed indoor signal amplification at the site of use, the user can contact the operator to which these devices belong and negotiate to turn off the power supply of the indoor signal distribution system equipment during the need to use the mobile signal jammer to reduce the strength of the mobile signal, thereby improving the interference effect of the mobile signal jammer. After the use of the jammer is completed, the normal operation of the indoor signal amplification can be restored.
2. Conduct on-site detection through professional instruments, record the frequency band used for indoor signal amplification, and then select high-power interference modules in the corresponding frequency band to conduct targeted interference. Compared to the first method, the cost of this method will increase, and the operation is highly professional. Of course, it is also necessary to consider whether the school is willing to increase the cost.