Introduced under 3GPP Release 13.2, Band 66 is designed to operate in the Advanced Wireless Services (AWS) spectrum, serving as an extension to the earlier established AWS bands. Its primary focus is the North American market, where the demand for broader spectrum assets has driven the need for extensions like Band 66.
Operating within the AWS range, Band 66 offers a blend of capacity and coverage suitable for urban, suburban, and some rural areas. The addition of this band provides North American operators with greater flexibility in managing network congestion and delivering high-quality services to users.