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The change that occurs with the introduction of Wi-Fi 6E, which adds the 6 GHz band to Wi-Fi 6. Wi-Fi 6 is not the use of the 6 GHz band, but the use of the 2.4 GHz band and the 5 GHz band in order to take advantage of both, the 2.4 GHz band has a greater coverage, and the 5 GHz band has a higher speed.
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Low penetration power 6GHz frequency band: new frequency band.Compatibility with most devices, as long as they are Wi-Fi 4 minimum.Having a lot of bandwidth the devices do not usually overlap.The TPC will automatically adjust the channel and the output power of the router so as not to interfere with military signals from radar, etc. This process ensures that radar systems can send and receive accurate information. The DFS function allows a router or access point to detect radar signals, and change its operating frequency to avoid interference. Radar signals are vulnerable to interference from other devices using the same spectrum. The IEEE 802.11 standard allows devices such as routers and access points to share the 5 GHz radio frequency spectrum with radar. They are channels 56 to 64, they are also channels of 20 MHz, 40MHz and 80MHz of bandwidth, we can use them, but they are under two restriction protocols, the DFS or Dynamic Frequency Selection (Dynamic Frequency Selector) and the TPC or Transmission Power Control. They are channels from 36 to 48, they are channels with a bandwidth of 20 MHz, 40MHz or 80MHz, they are at the beginning of the spectrum of the 5 GHz band and are called “low” channels because they are the lowest frequency channels within of the 5GHz band. But if a device works in 2.4 GHz, no matter how much Wi-Fi or other radio frequency technology is, they will share the same air and some connections will overlap each other.īased on this table we are going to explain the four groups of channels (within this band there are more groups of channels, it is the region that determines which groups of channels we can use and which groups of channels are restricted to it), the low channels, or U-NII-1, UNII-2A channels, DFS or U-NII-2C channels, and UNII-3 channels or high channels. Many devices work on the same frequency as this Wi-Fi frequency band, devices such as wireless keyboards and mice, television controls or cordless phones share this frequency, it does not mean that they share technology, that is, that they work over Wi-Fi. On the other hand, this is the band with the most saturation by far. This band is one of the most used today, it has a high compatibility with devices, since all WiFi devices today have access to the 2.4 GHz band, while many of them are not compatible with the 5 GHz band The most economical devices will adhere to the use of this band, at the time of their manufacture it is more economical to manufacture them with compatibility for 2.4 GHz and excluding the other bands.
#2.4 GHZ ROUTER FREE#
It has 3 channels of 20MHz or 1 single channel of 40 MHz, in this case, a part of the frequency spectrum assigned to this band would remain free if our router only selected the use of the 40 MHz channel, but this would not affect our Connection. The 2.4 GHz frequency band is used by the Wi-Fi 4 and Wi-Fi 6 standards. The list of channels would be as follows:Īs you can see the closer we get to the center of the spectrum, the more channels overlap each other. Subsequently, channel 14 was added, which was quite far from the frequency spectrum of 2.4 GHz Wi-Fi, and not all devices were compatible with this channel that operated at 2.484 MHz, reaching up to 2.495 MHz, and only overlapping with the channel 12 and 13, was a measure that was used to avoid the oversaturation that this band presented very early. This band is the oldest of all, all routers on the market incorporate it, it goes from 2,412 MHz to 2,472 MHz, it is subdivided into 13 channels each of 20 MHz which overlap each other as we can see in the picture.