CategoriesIntroduction to Jammers News

Do signal jammers need to think about heat dissipation?

Today, almost every test room is equipped with a test room signal isolator, but this equipment can become hot after a period of use. So, what is the basis for shielding installation? Old-fashioned shielded installations rely only on natural temperature gradual drops. But today, most devices are equipped with cooling fans. This cooling fan is not only a silent form, but also has a very good cooling effect. It can assist the device to reduce the temperature in a short time.

In addition, colleges and universities today are often air-conditioned. In the event of overheating, colleges and universities will turn on air conditioners or cooling fans to better ensure the safety of candidates. At this time, the temperature of the shield will also decrease to a certain extent. In fact, this thing is the same as a mobile phone. In summer, it can be hot just by opening it. But it won’t destroy the device. Especially with better quality equipment, don’t worry. For example, the equipment produced by Shenzhen Dexin Electronics basically has cooling fans. Even as the weather heats up, their equipment continues to maintain quality. It will not confuse consumers and universities. Therefore, in the selection of signal jammers in the examination room, it is better to choose a more reliable company. After all, the product quality of an enterprise affects the discipline of the entire college and even the entire examination room. If you want to maintain the discipline of the examination room, choose the most suitable or reliable service provider.

Now is the exam season. In the case of large-scale examinations, colleges and universities must use examination room shields to prevent students from cheating on their mobile phones. Therefore, colleges and universities need to assemble local test room mobile phone signal shielding installations around the classroom before the test. , But what model and specification should colleges buy a signal jammer? If you are responsible for college sales, pay special attention to the following aspects:

  1. Is there a communication base station around the college? In the process of engineering construction, we often find that customers respond that we say that the signal blocker has no practical effect. 2G and 3G can be blocked, which means that the voice call signal can be blocked, but the 4G signal cannot be blocked. In fact, the output power of each signal jammer is different. Generally, it is 4G1 and 4G2, and the output power is about 2W, which is 33db. If there is a communication base station within 200 meters of the surrounding area, such mechanical equipment will not block the 4G signal. It strikes, the client reacts, and there is no real effect.
  2. How to distinguish frequencies. Invalid frequencies for signal jammers are: 869-894 MHz; 825-960 MHz; 1805-1880 MHz and 1900-1990 MHz. Invalid frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can handle a range of about 20 meters in diameter and uses a DC-DC converter output voltage and 5V input voltage.
  3. Instead of intercepting the mobile phone signal (234G) to stop the voice call. If only 23G or 34G is intercepted, this can be adjusted before leaving the factory. In addition, there are 2.4GWIFI, 5.8GWIFI, VHF, UHF and other frequency bands. How to know? That is to say, if you only want to intercept voice calls or WIFI, the manufacturer can push 2G3G on the host, so the cost will come out.
  4. Distinguish the size of the output power. This is the area with the most scammers, and it is also the area where manufacturers often play with cats. Due to the need to measure the real output power, it is necessary to use a professional spectrum analyzer. The average customer is unlikely to own such machinery. Therefore, this thoroughness depends on the professional level of the customer’s choice of machinery and equipment. The size of the output power: The signal jammer can usually be divided into small output power, medium output power, and high power. The output power is 3W-100W.