When To Use A Cell Phone Jammer
Nowadays, mobile phones are all digital signals, and the anti-influence ability of digital signals is very strong. Generally, the effect of using analog signal technology to affect digital signals is poor. Therefore, digital signals must be used to affect digital signals. The effect is quite different. The When To Use A Cell Phone Jammer that adopts digital influence signal technology has lower power and higher efficiency than the mobile phone jammer that adopts analog signal influence technology. The synthesis, attenuation, reflection and other analysis of indoor mobile phone signals and influencing signals are very complicated. cell phone jammer Before being shielded, the strength and quality of the mobile phone signal in the local space have a great impact on the shielding. Different mobile phones have different effects. Generally, mobile phones with strong ability to receive weak signals may not have good anti-impact effects.
The direction of the signal tower and the direction of the mobile phone shielding area also affect the shielding effect. Generally, the signal strength in space is about -60 to -70dbm, the signal tower can reach about -40dbm within a few hundred meters, and the mobile phone receiving strength range is generally between -35 to -95dbm. The higher the signal power of the space mobile phone, the shorter the shielding distance. The above is a conclusion based on the law of radio signal transmission in free space. In reality, there are many obstacles on the ground that affect the transmission of radio waves. The above can only be qualitatively used as a reference. When To Use A Cell Phone Jammer Especially indoors, the above law is very different from the actual . Therefore, this problem is difficult to calculate accurately at the moment, and can only be determined based on the actual situation on the site. Accurate construction projects must carry out preliminary research and signal testing, and then design specific solutions, and then require timely follow-up testing and make certain corresponding supplements to be foolproof, that is, to achieve the effect of strict shielding.
If the classroom is relatively large, you can use the cellular type, and install several more mobile phone signal jammers in the examination room. In this way, the shielding effect of the mobile phone signal jammer in the examination room can be guaranteed to be the best. In addition, when installing, be sure to pay attention to anti-corrosion. Do not place in places with corrosive liquids. to avoid problems with the machine. In fact, most of the time, the signal jammer in the examination room does not need to be deliberately maintained. However, there are still a few places to be aware of. One is to remember to turn off the power after use. After use, wipe the surface to prevent dust from falling into the machine. However, do not get some chemical liquids when wiping. Finally, even if not in use, keep it in a ventilated place, not a damp place or a place with some chemical liquids.