Every year in the examination season, all parties begin to prepare for the pre-examination work intensively. The invigilator has various tricks to prevent high-tech cheating. Among them, the special shielding device for the examination room is still an anti-jamming device. However, as a well-known manufacturer of signal jammer, signalstorer reminds that there are many types and models of jammers. Before purchasing, users should clarify their own needs to avoid examination room accidents due to poor shielding effect, and also pay attention to the correctness of use methods. .
First of all, I want to clarify the place of use. Most of the mobile phone jammers used in schools are suitable for long-term work and durability. Secondly, how big is the area we are shielding? For example, a room of 100 square meters or a venue of 1,000 square meters, etc. If the area is large, the power must be larger, and if the area is small, the shielding power can be adjusted. Then there are which frequency bands need to be shielded. Are all mobile, China Unicom, Telecom, and CDMA shielded? Or only some frequency bands need to be shielded.
We remind everyone at this time that if you want to achieve the best effect when purchasing a suitable shield, it also depends on the method used. The most important of which are the following:
1. It is recommended to place the indoor shielding device at a height of about 180cm-220cm above the ground, and it is better to tilt it 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 shield will be attenuated to varying degrees after passing through the shield, 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 shield application environment is from the base station, the stronger the shield's theoretical shielding effect.
The above is the information on the selection guide and usage of the signal jammer introduced to you, I hope it can help you.