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The wireless bridge has two frequency bands: 2.4G and 5.8G. The original wireless bridge is mainly based on 2.4G. Now it is continuously developed and improved. At present, the 5.8G wireless bridge has become the mainstream. In detail, what are the differences between the two?
1, the standard is different
Due to the different standards used, the 5.8G includes three standards: 802.11a, 802.11an, 802.11ac, and is set to a data rate of up to 900 Mbps. 2.4G includes four standards: 802.11b, 802.11g, 802.11n, 802.11gn, and the rate of this band is up to 300Mbps.
2, the application is different
The 2.4G wireless bridge can do both wireless data transmission and hotspot coverage, but since the three major operators use 2.4G to transmit network signals, the hotspot coverage and wifi coverage are also 2.4G, which is relatively 2.4G. There will be a lot of interference sources, so most monitoring engineers will not use 2.4G wireless bridge for wireless monitoring, but only for wifi coverage.
The 5.8G frequency band application is not so much, so the 5.8G wireless bridge has strong anti-interference ability, mainly used in the monitoring industry, with strong anti-interference ability and high transmission rate.
3, different penetration capabilities
Compared with 2.4G, the 5.8G signal is not much interfered by the same frequency band, but the penetration capability is not as strong as 2.4G (the higher the frequency band, the greater the loss during transmission, the shorter the transmission distance), and the metal is easy to be Or other obstacles are absorbed, and Orthogonal Frequency Division Multiplexing (OFDM) is used to better process the signal.
4, the transmission distance is different
Generally speaking, the 5.8G wireless bridge has a longer transmission distance than the 2.4G wireless bridge. In the signal transmission process, 5.8G uses the orthogonal frequency division multiplexing technology to process the signal to ensure that the signal has less loss during transmission. Less attenuation. In the same environment, the rain attenuation of the 5.8G wireless bridge is also smaller, and the stability is high, which is generally suitable for long-distance wireless video transmission in the wild.
Therefore, in order to build a stable wireless monitoring system, the difference between different wireless bridges must be clarified in order to better use and better select the appropriate wireless bridge.
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