The mobile phone signal jammer (jammer) of the examination room is divided into omnidirectional type and directional type according to the shape of the interference (shielding). The omnidirectional type is an olive shape, and the directional type is a fan shape, so the omnidirectional type is shielded. The shielding area of the jammer is larger than that of the directional jammer; Features Of Cell Phone Jammer (jammer) is to generate a certain electromagnetic wave to interfere with the downlink of its mobile communication signal. If the Power of the jammer (jammer) is greater than the Power of the local mobile signal, Then the mobile phone will have no signal. If the Power of the jammer (jammer) is less than the Power of the local mobile signal, the mobile phone will have a signal. Whether there is a signal or no signal, the Internet and calls of the surrounding mobile phones of the signal jammer (jammer) will be greatly affected. cell phone jammer We know that the main purpose of installing mobile phone jammers in the examination room is to prevent students from cheating on the examination with electronic equipment. This is also a manifestation of maintaining fairness, in order to provide a fair environment for those taking the test.
After all, it is a high-tech era. Many electronic receiving devices can be made very small, so small that they can be built into the test equipment. We will use pencils, erasers and other stationery in the test, glasses, watches, mineral water and other items, all of which can be placed Miniature electronic devices. There is also a miniature headset, these cheating methods are difficult to detect. The magic is one foot high, the road is high, and the high-tech combat against cheating is constantly escalating. Features Of Cell Phone Jammer Is applied to the examination room in this case. Although it is difficult for us to find electronic equipment, we use signal jammers (jammers) to cut off electronic communication transmission. After all, in advanced electronic equipment, it is only useful to receive signals. Therefore, cheating with electronic devices is now unrealistic. Students should not do it. It is better to study hard. But the disadvantages of mobile phone signal jammers are also very obvious. It is full-band interference. Whether you are in the examination room or around the examination room, you will be interfered. At this time, mobile phone users around the examination room will be greatly affected. Don't worry if we encounter this situation, we only need to leave the surrounding area of the examination room to be able to return to normal. The signal jammer will only be turned on during the test, and it will usually affect at most one or two days. After this time, the surrounding signals in the test room will return to normal.
