Do signal jammers need to consider heat dissipation?
Nowadays, almost every test site is equipped with test room signal jammer, but this equipment will get hot after a period of application. The hotness may interfere with the normal application of the device. However, this is not certain. Just based on different brands, there are also differences in the ability to remove heat. In that way, what method is the shielding device based on? The old-style shielding device only relied on the natural temperature to gradually drop. But nowadays, most of the devices are equipped with cooling fans. This cooling fan is not only a silent mode, but also has a very good heat dissipation effect. It can help the equipment to lower the temperature in a short time.
In addition, today’s colleges and universities usually have air conditioners installed. In the case of overheating, colleges and universities will turn on the air conditioner or cooling fan in order to better ensure the safety of candidates. At this time, the temperature of the shield will also be There is a certain reduction. In fact, this thing is the same as a mobile phone. In summer, it will be hot as long as it is turned on. But it will not destroy the equipment. Especially with better quality equipment, don't worry about it. For example, the equipment manufactured by Shenzhen Texin Electronics basically has cooling fans. And even if it gets hot, their equipment can continue to maintain quality. It will not cause confusion for consumers and colleges. Therefore, it is better to choose a more reliable company at the level of selecting signal jammers in the examination room. After all, the product quality of an enterprise affects the discipline of an entire academy and even an entire examination venue. If you want to maintain the discipline of the exam venue, the most suitable or reliable service provider is selected.
Now it coincides with the exam season. In the case of large-scale examinations, colleges must use test room shields so as to prevent students from cheating on mobile phones. Therefore, colleges and universities need to assemble a part of the test room mobile phone signal shielding device around the classroom before the exam. , But which model and specification of signal jammer should be bought when colleges and universities buy it? If you are the person who undertakes the purchase of the college, 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 to us that the signal jammer has no practical effect. 2G3G can be intercepted, in other words the signal of voice call can be intercepted, but the signal of 4G cannot be shielded. In fact, the output power of each signal jammer is different, usually 4G1 and 4G2, the output power is about 2W, in other words 33db. If there are communication base stations within 200 meters of the surrounding area, such machinery and equipment will not intercept 4G signals. It will happen, the customer reacts, and there is no actual effect.
2. How to distinguish frequency. The effective frequency of the signal jammer is: 869—894 MHz; 825—960 MHz; 1805—1880 MHz and 1900—1990 MHz. The effective frequency bands are CDMA800, GSM900, DCS1800, and PCS1900. It can handle a range of about 20 meters in diameter, and use a DC-DC converter to enter the voltage and 5V output voltage.
3. Alternative interception of mobile phone signal (234G) for voice calls. If you only intercept 23G or 34G, this can be adjusted before leaving the factory. In addition, there are 2.4GWIFI, 5.8GWIFI, VHF, UHF and other frequency bands. How to understand? In other words, if you only want to intercept voice calls or WIFI, the manufacturer can mainly push 2G3G on the host, so the cost will also come out.
4. Distinguish the size of the output power. This is the most fraudulent area, and it is also an area where manufacturers often play with cats. Since it is necessary to measure the true output power, a professional spectrum analyzer must be used. Normal customers are unlikely to have such machinery and equipment. Therefore, this thoroughness depends on the professionalism of the customer's selection of machinery and equipment. The size of the output power: signal jammers can usually be divided into small output power, medium output power, high power, and the output power is 3W-100W.
