topsignaljammer's blog
There are many kinds of examinations in society at present, and the most influential one is the annual college entrance examination. This is the door for thousands of students to enter institutions of higher learning and the bridge for countless families to place unlimited hopes on. There are also entrance exams for master's and doctoral students, CET-4 and CET-6, high school entrance exams for primary school to junior high school, etc. It plays a very important role in the life of every family. In order to fully ensure that all candidates are at the starting line of a "fair competition", relevant parties have adopted many methods, one of the most important measures is to resolutely put an end to cheating.
In order to take the examination style and discipline seriously and resolutely put an end to cheating, I think it is very necessary to use necessary technical means in the examination in a timely manner. Especially in view of the current serious phenomenon of cheating in mobile phone communications, the use of equipment such as cell phone signal jammers is a very effective measure. , in order to prevent cheating through the communication of internal and external information during the examination process. By using technical means such as mobile phone signal jammers and "mandatory" restrictions on cheating in exams for a certain period of time, we can gradually achieve a complete change in concepts, cultivate and improve people's awareness of integrity. When the social credit system is imperfect and bad social trends still exist, the only way to establish a credit system is to make full use of technological means to gradually establish a truly fair competition environment.
However, people have some misunderstandings about mobile phone signal jammer products. As a long-term worker in the education industry and an in-depth researcher of this product, I have the obligation to give a brief introduction to this product from a technical point of view. Public clarification.
The working principle of the mobile phone signal jammer (also known as mobile phone signal screen blocker, mobile phone signal jammer) is as follows: the scanning signal generated by the sawtooth wave signal generator is inverted by the inverter and then enters the voltage controlled oscillator to modulate CDMA, On the three frequency bands with the same downlink frequency of GSM and PHS, the modulated frequency sweep signal is amplified by the power amplifier, and the power of the power amplifier is controlled through the voltage regulator tube to make the transmission power less than 1W. The amplified frequency sweep signal is in the form of radio waves. Launch into the air. Because the frequency sweep signal causes garbled interference in the message signal received by the mobile phone, the mobile phone cannot receive normal data sent by the base station, making it impossible for the mobile phone to establish a normal connection with the base station. Thus, the mobile phone is separated from the base station communication network. The mobile phone shows the phenomenon of no signal and no service system in the search network to achieve the blocking effect. It does not rely on unlimited power increase to compete with the mobile phone base station to achieve the blocking effect.
The intensity of the electromagnetic signal emitted by the mobile phone signal jammer is very weak. As long as the electromagnetic radiation intensity is a qualified product produced by a regular manufacturer, its electromagnetic radiation intensity has been strictly tested by an authoritative testing and certification agency, such as the "Environmental and Health Related Product Safety Institute of the Chinese Center for Disease Control and Prevention". The electromagnetic field intensity measurement values at all sampling points are lower than the relevant frequency band standard limits of the "Electromagnetic Radiation Protection Regulations" (GB8702-88) formulated by the State Environmental Protection Administration (this standard is only 1/5 of the European standard and 1/10 of the Japanese standard). It will not cause harm to the human body, so there is no need to panic. The unnecessary psychological burden is the real obstacle. The power of mobile phone signal jammer is very small (≤1W), and its range is only twenty or thirty meters. It will not cause interference to mobile phone base stations at all, and when used in specific situations, it will not endanger public information security. The frequency of the electromagnetic signal it emits completely falls within the specified mobile phone operating frequency band, and this signal is always in a relatively static and constant state. It will not affect any other electronic equipment, nor will it interfere with the human brain or affect the human brain. normal human thinking.
GPS locators have become undeniably solid products, whether pinpointing a business property or monitoring a home. But as users become increasingly dependent on these things, the reasons for hackers to twist the system increase. Obviously, potential interference with how these devices work could severely impair performance.
GS monitoring device is mainly used for real-time location monitoring, monitoring of property and loved ones. For years, surveillance devices have been used for legal tasks such as rescue missions, sex offender monitoring, parole offender monitoring, and more. In addition to this, it can be used to locate and protect the team. The device helps team managers protect vehicles, ensure quick recovery if property is stolen, and ensure the company receives lower insurance premiums. In fact, these surveillance devices are used to check the whereabouts of spouses for potential inappropriate behavior.
For these reasons, people certainly need GPS locators to ensure that their devices are always working. Ironically, however, GPS monitoring devices can also compromise personal safety as much as they cause it. GPS signal jamming can also be helpful if terrorists can obtain important location information of government property or even if a wife can catch her as a defective husband.
GPS signal jammers and other signal restraint devices
Different methods of mixing or interrupting GPS signals will also depend on the type of monitoring equipment used. The most direct way to avoid being tracked is to destroy the GPS device and ensure that it cannot be resurrected. However, if the intention is to covertly tamper with it without the installer's knowledge, then it is simple to impede or impair a tracking device's transmission by using these instruments:
1. Metal shield
This is the cheaper option. Just wrap the tracking device with any metal covering such as copper mesh or lead camera film protector. The thieves are said to have used refrigerated trucks to transport vehicles equipped with GPS tracking devices to avoid being tracked.
2.GPS jammer
GPS jammers are mainly sold online. Plugged into the 12v adapter in the car, now the GPS radio signal can be damaged within a certain range.
GPS jammers are mainly sold online. Plug the 12v adapter into the car and now the GPS radio signal can be destroyed within a certain range.
4.GPS camouflage
This is illegal and considered a risky trivial matter because it provides a false radio signal rather than the real data transmitted by the GPS device. This is especially harmful to business users.
