The Application of Vehicle Electronic Jammer
What is the sanctity of in car electronic jammers? Today, let's trace the origin and development of this artifact together.
At first, in car electronic jammers were not actually set up for exam scenarios. The initial application was actually in prison.
In order to ensure the information security and privacy of high walled courtyards in prisons, it is necessary for prisons to isolate communication signals between them, which is the original intention of in vehicle electronic jammers.
When the car mounted electronic jammer was first invented, the entire world had only developed into the 2G era. At that time, although there were three domestic operators, in fact, all mobile phones used second-generation network communication technology. The communication frequency of mobile phones used between manufacturers of different standards varies greatly.
The ability of mobile phones to make and answer calls mainly relies on the support of communication base stations. After turning on the phone, it will actively connect to the nearest communication base station, which will command when making and answering calls. Actually, it's all communication between communication base stations. So what do prisons need to do if they want to interrupt communication between prisoners inside the prison and the outside world?
The answer is actually very simple. It only requires a machine with the same frequency as the phone to make noise, so that when the base station tries to connect to the phone. You will find that the signals coming from the mobile phone are mixed and unrecognizable, so you will refuse to communicate with the phone.
Based on this principle, after the development of car mounted electronic jammers, everyone was overjoyed. Prisons only needed a few car mounted electronic jammers that could emit such noise to interfere with mobile communication throughout the entire prison area. As more and more scenarios require interference signals. The in car electronic jammers originally designed for use in prisons have gradually entered normal commercial scenarios, such as important meetings and exams.
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