How many channels does 2.4 GHz use?

The 2.4 GHz frequency band is divided into multiple channels that are used for wireless communication, particularly for Wi-Fi networks. In the context of Wi-Fi, the most commonly used channel allocation in the 2.4 GHz band is based on a total of 11 channels.

These channels are spaced 5 MHz apart, starting from channel 1 at 2.412 GHz up to channel 11 at 2.462 GHz. However, while there are indeed 11 channels available, it’s important to note that only three of these channels (1, 6, and 11) are non-overlapping in the typical 2.4 GHz Wi-Fi implementation when considering bandwidth and interference between adjacent channels. This understanding is crucial for optimizing wireless networking, as it helps reduce interference and improve performance.

Thus, the correct answer reflects the total number of defined channels in this frequency band, which is 11.