At present, the principle of Gaokao Cell Phone Jammer Illegal In New York is that when your mobile phone is sending and receiving information, the mobile phone jammer acts as a super cheerleader to "yell". "I can't call the shield. To put it simply, this is not blocking your signal (it is difficult to shield the signal and requires very stringent conditions), but blocking your signal. Or it can be said that you are whispering to your girlfriend, and suddenly 20 foreigners come to rap loudly in 20 foreign languages at the same time, and you can't hear your girlfriend talking. Although a mobile phone is a wireless communication device that is used wherever it goes, there are also invisible wires dragging it, and the invisible wire is the mobile phone base station. Whether making a phone call or answering a phone call, the first step is to establish contact with a nearby cell phone base station. If you hold a mobile phone in your left hand and right hand, use the mobile phone in your left hand to dial the mobile phone in your right hand, cell phone jammer The electromagnetic wave of the mobile phone is not as simple as passing directly from the left hand to the right hand, but from the left hand mobile phone to a mobile phone base station several hundred meters away, and then back to the right hand mobile phone in a large circle (except for the Bluetooth function).
Normally, the base station and the mobile phone are chatting in full swing. The radio wave signals sent by the two parties come and go, but when Cell Phone Jammer Illegal In New York is turned on, it will "beat gongs and drums" around the mobile phone, sending out signals that are many times more Powerful than the received base station. "Noise" radio wave signals, the mobile phone can’t hear what the base station is talking about, cannot receive the signal from the base station normally, and the connection between the two is cut off, and the mobile phone will become an island. Paralyzed state. So much noise came out, not only "shielded" the test room signal, the wireless signal around the test room would also be interfered, which seriously affected the call quality of mobile phone users around the test room. Is this cell phone jammer really useful? The entire frequency band of electromagnetic waves ranges from the smallest a few Hz to the largest hundreds of GHz. Each segment may be used as a communication signal, but except for a few very professional equipment, ordinary mobile phone signals interfere All devices are "not loud enough" and "five tones are not complete". A mobile phone jammer can only shield a small part of the frequency bands, and communication tools can use unshielded frequency bands for communication. Of course, all the 2G, 3G, and 4G mobile phone services of several domestic communication companies are concentrated in a few small frequency bands. The mobile phone jammers in the examination room can still concentrate on these frequency bands.
