Recently, a customer asked this question: The original cell phone jammer in the unit has a good shielding effect on smart phones, but the shielding effect on elderly phones is not very good. Why is this?

First of all, according to the principle of mobile phone jammer, what the cell phone signal jammer interferes with is the communication signal between the base station and the mobile phone. It has nothing to do with the brand and model of the mobile phone. However, due to different mobile phone manufacturers, differences in production processes, and various There are differences in the components used by mobile phone manufacturers. Mobile phones of different brands and models also have certain differences. We will not consider other functions. We will only discuss the ability of the mobile phone itself to receive signals. So under the same signal strength, the mobile phone The ability to receive signals is strong, and the mobile phone can be used normally in places with weak signals. However, the signal strength from the base station to this location does not change at this time, and the shielding range of the mobile phone jammer depends on the distance of the base stations surrounding the use site, that is, the signal strength from the base station to the use site. It has nothing to do with the brand and model of the mobile phone.

The reason why elderly phones cannot be shielded at the use site is because the ability of elderly phones to receive signals is stronger. But if the on-site signal has been interfered by the signal of the mobile phone jammer, then even an elderly phone will still not have a signal.

If the mobile phone jammer does not have a good shielding effect on the elderly mobile phone, then the signal blocker needs to be adjusted, either by increasing the transmit power of each shielding module of the mobile phone jammer, or by selecting a high-power mobile phone jammer, or by The shielding module of the shielding device should be rationally adjusted, and the output frequency of the shielding module should be refined again. That is to say, the shielding module should be added to reasonably split the transmission signal frequency of the shielding module, such as the original output frequency range of a shielding module. It is 80MHz. By adding modules, the 80MHz frequency is divided into two shielding module outputs, so that the shielding effect can be relatively improved and the signal frequency band used by elderly phones can be covered in a targeted manner.