This kind of situation has a high probability for manufacturers of phone jammer. There is a base station of the operator near the site, or an indoor signal distribution system is installed in the corridor. As a result, the shielding effect of the telephone jammer is greatly affected. In this case, there is no need to panic or complain that the equipment produced by the manufacturer is faulty.

1. The phone jammer operates on site and has a certain shielding effect, but the distance does not meet the requirements. If two sets of the same equipment can be configured, two sets can also be installed, or the spectrum analyzer can be used to detect the signal frequency band on site, and find out the signal frequency that is most difficult to shield through analysis. In the equipment, add shielding modules of the corresponding frequency band, then disperse the frequency distribution and reasonably allocate the transmission frequency of each module, This can change the shielding effect on site.

2. The above method still can not achieve the expected effect of shielding. A high-power shielding module can be used to supplement the targeted shielding of a strong frequency band of a frequency signal. Cooperate with low-power mobile phone shielding to realize full frequency coverage shielding of mobile phone frequency band. This method can be realized by using the high-power module sma-818k200 produced by Nanjing Bokang Electromechanical Technology Co., Ltd. This method can save a lot of cost and realize shielding on site Effective and cost-effective method.