During various types of examinations, it has long been commonplace to install wireless signal jammers in each examination room. However, almost more than 90% of the examination rooms, in the selection of shielding equipment, choose the low-power type. Why do they choose this way? There are high-power shielding devices that are normally sold in the market, why not use high-power wireless signal jammers in the examination room?
The answer to this question can be analyzed and answered from two angles: one is to analyze from the product performance and application scenarios of the high-power wireless signal jammer itself, and the other is to analyze from the construction side of the examination room.
First of all, let’s talk about the high-power wireless signal jammer. Its biggest feature is its high transmission power and wide coverage. However, it will be clearly indicated in its instruction manual that high-power wireless signal jammers are mainly used in open outdoor environments. Environments such as examination rooms are obviously indoor environments, and they are numerous and densely distributed. , Each examination room room is still wall isolation. This kind of wall barrier will cause great errors in the shielding signal, and it is easy to cause the shielding signal to only cover a local area or floor. It is precisely in consideration of these factors that high-power wireless signal jammers are strictly required not to be installed in buildings, but must be installed at an appropriate distance around a building. And for a building, it is usually necessary to arrange at least 2-4 sets of high-power shielding equipment to basically meet the needs of signal shielding.
The high-power wireless signal jammer itself also has the characteristics of large volume, heavy weight, high heat dissipation and ventilation requirements, and high purchase cost. These characteristics also determine that it is not easy to choose high-power models in the examination room.
This leads to the second reason for analysis from the construction side of the examination room: due to the large size and heavy weight of the high-power wireless signal jammer, the installation and construction are relatively complicated and time-consuming. Since the purchase cost of high-power wireless signal jammers is much higher than that of low-power shielding equipment, the price ratio between the two can reach 50:1 or even 100:1. Also take a building as an example, assuming this building There are 50 examination room classrooms in the building, using low-power wireless signal jammers, even if each classroom is equipped with one, the total number is 50. However, if it is replaced with a high-power wireless signal shielding device, at least 2-4 units may be needed. According to the conversion of the aforementioned price ratio, it can be concluded that if the high-power shielding equipment is used, the construction investment cost may need Improve 2-4 times.
