Why are the 5G mobile phone jammers used in examination rooms basically low-power?
In [sensitive words], it has long been commonplace to install wireless signal shielding equipment in every examination room. However, when selecting shielding equipment, examination rooms basically choose low-power types. So why not use a high-power 5G mobile phone jammer in the examination room?
One is based on product performance and application scenarios, and the other is based on the construction of the examination room. High-power wireless signal jammer is characterized by high transmission power and wide coverage. However, its instruction manual clearly reminds that high-power wireless signal shielding equipment is mainly used in outdoor open environments. An environment like an examination room is obviously an indoor environment, and it is numerous and densely distributed. Each examination room is also separated by walls. This kind of wall barrier has a large signal shielding error, which can easily cause the shielded signal to only cover a local area or floor. It is precisely because of these factors that high-power wireless signal shielding equipment is required not to be installed inside a building, but at an appropriate distance around the building. Moreover, for a building, it is usually necessary to arrange at least 2-4 sets of high-power shielding equipment to basically meet the signal shielding requirements.
High-power wireless signal shielding equipment itself also has the characteristics of large size, heavy weight, high requirements for heat dissipation and ventilation, and high procurement cost. These characteristics also determine that it is not easy to choose high-power models in the examination room. Low-power 5G mobile phone jammers are relatively cheap, while high-power ones are relatively expensive. Especially the higher the power, the higher the price. The higher the RF transmitting power of a shielding device, the higher its price.
The greater the RF transmission power value of the shielding device, the corresponding result is basically the greater the shielding range, or the greater the shielding distance and shielding radius. If you want to increase the transmit power, you need to use a power amplifier with a larger output power. The higher the power rating of the amplifier, the higher the purchase cost. In order to obtain greater output power, some shielding modules even adopt a multi-level power drive method, using multiple power amplifiers to amplify the power step by step to obtain greater output power. This multi-level driving method also virtually increases the number of equipment costs and production costs.
The price of a 5G mobile phone jammer is directly proportional to the shielding range. As the required shielding range increases, the price of high-power jammers will naturally increase. The purchase price of low-power shielding equipment commonly used in examination rooms or conference rooms on the market is relatively low because of the huge production volume of such products. The equipment itself has a small number of parts, a simple process, and is easy to assemble. This is not only due to the increase in the cost of electronic components, but also related to the structure, appearance, heat dissipation, antenna and other supporting components of the product.
