Wireless router and portable WIFI signal transmission distance

Many people do not know the optimal distance of wireless wifi transmission when setting up wireless wifi. Generally speaking, wireless wifi can be divided into commercial equipment, home equipment, and mini equipment. Let's discuss the transmission distance of these three types of devices. A: The transmission distance of commercial equipment Generally refers to those high-power wireless transmission equipment, such as China Mobile and China Telecom's wifi, as well as some large-scale shopping malls and other high-power wireless equipment, general transmission. The distance is also about 300 meters. Signals exceeding 300 meters may be severely weakened and the signal is unstable. How to print on both sides of the word. Second: the transmission distance of the home device is the general wireless router. The transmission distance of this wireless router is about 10 meters to 50 meters, and the ability of these wireless routers to penetrate obstacles is very weak. This kind of wifi in the living room, the signal coverage is best, the effect of the compact building in the urban area will also be worse. Three: transmission distance of small mini device Mini wifi means USB wireless network card or 360 portable wifi, looks like a U disk. This small wifi can accept both wireless models and wireless signal transmitters. The wireless transmission distance is about 5 meters, and the best effect is lost. Therefore, this portable wifi can only be used in a small area around you.