Fixed wireless broadband is a type of high-speed Internet access where connections to service providers use radio signals rather than cables. Several different forms of fixed wireless broadband are available to residential and business customers. While this type of Internet service has some limitations, its overall performance is probably better than you expect.
→ See also - Types of Wireless Internet Service
→ See also - Types of Wireless Internet Service
Wireless network mostly uses 2.4Ghz. now days.