2.4ghz b意思

The term "2.4GHz b" is often used in the context of wireless communication, particularly with respect to Wi-Fi networks. Here's what it means:

• "2.4GHz" refers to the radio frequency band used by the wireless signal. The 2.4GHz band is one of the most commonly used frequency ranges for wireless communication because it can penetrate obstacles relatively well and has been available for unlicensed use. This means that devices like Wi-Fi routers, cordless phones, and microwave ovens can use this band without a government license.

• "b" typically refers to the "b" standard of Wi-Fi, which is 802.11b. This is an older wireless networking standard that was introduced in 1999. It operates on the 2.4GHz band and has a maximum theoretical data transfer rate of 11 Mbps (megabits per second). The 802.11b standard is less common now, as it has been superseded by faster and more efficient Wi-Fi standards like 802.11g, 802.11n, 802.11ac, and the latest, 802.11ax (also known as Wi-Fi 6).

So, "2.4GHz b" essentially means that the wireless signal is using the 2.4GHz frequency band and the 802.11b standard for communication. This combination is typically found in older devices or in situations where compatibility with very old devices is required. For most modern applications, faster and more advanced Wi-Fi standards are used, offering higher speeds and better performance.