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source:Industry News release time:2021-09-13 Article author:sznbone Popular:Prison Jamming system
By the annual exam season, all parties have begun to prepare for the exam. The invigilator has various tricks to prevent high-tech cheating. Among them, the special shielding device for the exam room is still an anti-jamming device. However, Foshan Linchuang Technology, as a well-known manufacturer of signal jammers, reminds that there are many types of jammers, and users should clarify their needs before purchasing to avoid poor shielding effects and accidents in the examination room, and pay attention to the method of use. The correctness.
First of all, I want to clarify the place of use. Most schools use test room-type mobile phone shielding devices that are suitable for long-term work and are durable. Secondly, how big is the shielded area? For example, a room of 100 square meters or a venue of thousands of square meters. If the area is large, the power must be larger, and if the area is small, you must consider using adjustable shielding power. Then there is which frequency bands need to be shielded. Are all China Mobile, China Unicom, China Telecom and CDMA shielded? Or only some frequency bands need to be shielded.
We remind everyone at this time that the best results can be achieved when the right shielding device is purchased, and it depends on the method used. The most important ones are the following:
1. Indoor-type shielding device is recommended to be placed at a height of about 180cm-220cm from the ground, and the angle is better to be inclined forward.
2. Whether there are obstructions (such as walls, metal products, human bodies, etc.) between the shield and wireless communication equipment (mobile phones, etc.). The interference signal emitted by the jammer will be attenuated to different degrees after passing through the obstruction, please try to avoid it.
3. The weaker the wireless communication signal strength in the use environment, the stronger the theoretical shielding effect of the shielding device.
4. The farther the jammer application environment is from the base station, the stronger the theoretical shielding effect of the jammer.
The above is the information on the purchase guide and usage of the signal jammer. I hope to help you.
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