Mobile phone signal shielding boxes are used in many places, and they are also widely used in many places. The mobile phone signal shielding box can limit the electromagnetic capability within a certain space. It is a metal body used to suppress radiated interference, so that the tested wireless communication device is in a non-interference test environment.
In electronic equipment manufacturers, shielding boxes are indispensable, and the shielding boxes required for each different field are different, such as: GPS shielding box, mobile phone signal shielding box, Bluetooth shielding box, mobile phone shielding box, etc. And so on, and the choice of shielding box is also very important, the most important thing is safety and reliability. But everyone does not know it very well. For example, when buying a mobile phone signal jammer, you must pay attention to the field test of various mobile phone shielding effects to ensure that it is really effective.
The first thing is to test the shielding distance of the mobile phone signal jammer. Don't just use one or two network mobile phones to try it out. During the test, cheating candidates use different mobile phone networks, especially 4G mobile phone networks (4G networks use broadband high-speed transmission methods, if the power or bandwidth of the mobile phone signal jammer is not enough, it may not be able to shield 4G).
Therefore, it is necessary to find all the mobile phones of the current mobile communication company before the test can be carried out. Ensure that each mobile phone network can meet the minimum of one classroom before it is passed. After turning on the test, the shielding effect must be ensured that the mobile phone has no signal and cannot appear within half an hour. Sometimes and sometimes nothing. One more important point: if it is a metal phone shielding device, touch the front and back sides of the fuselage after turning on for 1 hour. If the temperature is moderate, it will not be hot. If it is very hot, it will not turn off, because the machine will continue to heat up. The power of the shield is attenuated, it cannot work stably, and it is also prone to burns.