What does wifi antenna 2 4G mean

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Common wireless routers generally work in the frequency band, this frequency band is a free public frequency band, other electronic products, such as air conditioners, microwave ovens, wireless mice, wireless speakers, Bluetooth, cordless**, etc. are also using this frequency band, which is easy to cause wireless signal interference between devices, resulting in unstable wireless networks.

Dual-band wireless router (there are two frequency bands and 5GHz optional) choose the 5GHz frequency band, which can directly avoid this crowded public frequency band, and can also avoid conflicts with other wireless devices, ensure the stability of the wireless network, prevent the occurrence of drops, improve the speed of the wireless network, and unimpeded the wireless network.

There are 13 overlapping channels in the frequency band, of which only 3 channels that do not coincide with each other can be found.

1. The channel is also called the channel and frequency band, which is a data signal transmission channel with wireless signals (electromagnetic waves) as the transmission carrier. Wireless networks (routers, AP hotspots, and computer wireless network cards) can operate on multiple channels. Various wireless network devices within the wireless signal coverage should try to use different channels to avoid interference between signals.

2. The frequency range of 13 channels of wireless wifi: according to the channel division of the commonly used frequency band.

In fact, there are 14 buried channels (the 14th channel is drawn in the figure below), but the 14th channel is generally not used. Only the center frequency of the channel is listed in the table. The effective width of each channel is 20MHz, with an additional 2MHz mandatory isolation band (similar to a highway isolation band).

That is, for a 1 channel with a center frequency of 2412 MHz, its frequency range is 2401 2423MHz.

The difference between 5G and home wifi is mainly in the transmission range and band frequency, the transmission is relatively far, the band frequency is relatively short, but the stability is lower than 5G.

For wireless modules within 50 meters, CC2500 wireless modules are generally used in the market. Among them, in industrial applications, modules made of CC2500 IC, such as CC2500M wireless module; For general applications, the CC2500S wireless module is used.

It uses TI's CC2500 wafer bonding, which has a high cost performance. The size of the module is 12*18mm, and the effective distance is 20 to 50 meters. The maximum rate is 250kbps.

Applications:

Wireless data transmission is widely used in vehicle monitoring, remote control, telemetry, small wireless network, wireless meter reading, access control system, community paging, industrial data collection system, non-local loss label, identification, non-contact RF smart card, small wireless data terminal, security and fire protection system, wireless remote control system.

Biological signal acquisition, hydrometeorological monitoring, robot control, wireless 232 data communication, wireless 485 422 data communication, digital audio, digital image transmission and other fields.

The above content reference: Encyclopedia wireless module.

Common wireless routers generally work in the frequency band, this frequency band is a free public frequency band, other electronic products, such as air conditioners, microwave ovens, wireless mice, wireless speakers, Bluetooth, cordless**, etc. are also using this frequency band, which is easy to cause wireless signal interference between devices, resulting in unstable wireless networks.

Dual-band wireless router (there are two frequency bands and 5GHz optional) choose the 5GHz frequency band, which can directly avoid this crowded public frequency band, and can also avoid conflicts with other wireless devices, ensure the stability of the wireless network, prevent the occurrence of drops, improve the speed of the wireless network, and unimpeded the wireless network.

The difference between 5G and

Mainly in the transmission range and band frequency, the transmission is relatively long, the band frequency is relatively short, but the stability is lower than that of 5G.

A dual-band router is a wireless router that works on both GHz and GHz bands. In other words, the transmission is far apart and the frequency is relatively short, so it can be received over long distances, but the disadvantage is that it is unstable and prone to interference, and even if it is seen that it is a full grid, the network may be slow.

Compared with single-band wireless routers, Shizhong 5G wireless transmission speed is high, anti-interference is good, wireless signal town is strong, high stability, and not easy to drop. The disadvantages are long frequency bands, short transmission distances and poor penetration. But it is stable at an effective distance.

WiFi+ vs 5G, which is the main antenna? Which is the secondary antenna?

Good evening, thank you for your patience, I'm here to answer your questions! Generally speaking, there is no fixed standard for the main antenna and secondary antenna of a WiFi router, so it is impossible to distinguish it from 5GHz separately. In most cases, the main antenna and secondary antenna of Chunyuan WiFi router support both the 5GHz band, and there is not much difference between them.

In practical applications, when we use WiFi, the router will automatically select or 5GHz frequency band for wireless transmission according to the signal demand of the device and the ability to receive the retracement state, so as to achieve the best data transmission effect. If you have any further questions, please feel free to continue asking them. I hope mine can help you and have a great day