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^A In the 2.4 GHz bands bonded 40 MHz channels are uniquely named by the primary and secondary 20 MHz channels, e.g. 9+13. In the 5 GHz bands they are denoted by the center of the wider band and the primary 20 MHz channel e.g. 42[40] ^B In the US, 802.11 operation on channels 12 and 13 is allowed under low power conditions.
Bluetooth devices intended for use in short-range personal area networks operate from 2.4 to 2.4835 GHz. To reduce interference with other protocols that use the 2.45 GHz band, the Bluetooth protocol divides the band into 80 channels (numbered from 0 to 79, each 1 MHz wide) and changes channels up to 1600 times per second.
IEEE 802.11ac-2013 or 802.11ac is a wireless networking standard in the IEEE 802.11 set of protocols (which is part of the Wi-Fi networking family), providing high-throughput wireless local area networks (WLANs) on the 5 GHz band.
Wi-Fi 6 covers frequencies in license-exempt bands between 1 and 7.125 GHz, including the commonly used 2.4 GHz and 5 GHz, as well as the broader 6 GHz band. [8] This standard aims to boost data speed (throughput-per-area [d]) in crowded places like offices and malls.
Region 2 only (with some exceptions) Fixed: Mobile except aeronautical mobile & Radiolocation service; in Region 2 additional Amateur service 2.4 GHz: 2.5 GHz 2.45 GHz 100 MHz B Worldwide: Fixed, mobile, radiolocation: Amateur & amateur-satellite service 5.725 GHz: 5.875 GHz 5.8 GHz 150 MHz B Worldwide: Fixed-satellite, radiolocation, mobile
2.4 – 2.5 GHz 12 12 Yes 61.44 MSPS ... Crystal controlled two channels Yes Yes Yes Cyan [34] ... 2.4 GHz and 5.8 GHz 40 MHz 12 12 Yes 40 Msps
This is in contrast to the 2.4 GHz frequency band where the channels are only 5 MHz wide. In general, lower frequencies have longer range but have less capacity. The 5 GHz bands are absorbed to a greater degree by common building materials than the 2.4 GHz bands and usually give a shorter range.
To achieve maximum output, a pure 802.11n 5 GHz network is recommended. The 5 GHz band has substantial capacity due to many non-overlapping radio channels and less radio interference as compared to the 2.4 GHz band. [16] An 802.11n-only network may be impractical for many users because they need to support legacy equipment that still is 802.11b ...