The so-called mobile phone blocking is nothing more than blocking wireless signals. Since it is not an iron cage outside the examination room, its principle is not shielding, but interference. size can be completely shielded). Since it is interference, there are two kinds, one is full-band interference, and the other is selective interference. Full band Can You Build A Cell Phone Blocker is impractical, I don't believe it matters, after all it can't control the range of interference; and the military, which won't mess up the small exam room. Selective jamming avoids some sensitive frequency bands, such as military and police. In addition, GSM uses the 900 and 1800 frequency bands, CDMA uses the 800M frequency band, and small bells generally use the 1900 frequency band. I don't believe this all interferes.
Cell phone signal jammers (also known as cell phone signal blockers, signal jammers, signal isolators, signal blockers, signal suppressors, cell phone jammers, wireless signal jammers, conference information security equipment) have always been at the forefront of the industry. Recently, our company has developed a new type of smart Can You Build A Cell Phone Blocker according to market demand, combined with the advantages of mobile phone signal jammers at home and abroad, combined with the company's own technical strength and rich industry experience, which has been used in all mobile phones. cell phone jammer in China. The new generation of mobile phone signal jammer has been improved on the basis of function, using ultra-high frequency broadband interference technology, intelligent remote control switch. The four channels can independently adjust the shielding range, the interference radius is large, and the effective segmentation can only interfere with the downlink, and will not interfere with the base station. Imported components and slow start circuit design are used to avoid sparks from mechanical switches.
