Most WiFi certified devices that are currently connected on your wireless networks use the 2.4GHz band. More recently, and due to the decrease in price of dual-band devices, we are seeing more use of the higher frequency 5GHz band.
WiFi is a designed in accordance with the version of the 802.11 standards, a family of specifications developed by the IEEE (Institute of Electrical and Electronics Engineers) for wireless LAN (WLAN) technology. 802.11 specifies an over-the-air interface between a wireless client and a base station or between two wireless clients. The version 802.11a supports 5GHz radio band. Conversely, 802.11b and 802.11g only support the 2.4GHz band. With the release of 802.11n saw support for both the 2.4GHz and 5GHz and hence the term ‘dual-band’.
So now all that is out of the way, what are the key difference between the 2.4GHz, 5GHz, and 60GHz bands and how best to use them on your wireless networks?