Most radio frequency devices imported for sale or use in the US must obtain FCC equipment authorization — either through certification, Supplier's Declaration of Conformity, or verification — before they can be marketed or operated. Importers should confirm that the applicable authorization is in place prior to entry, as CBP may detain shipments of non-compliant RF devices at the border.

NAICS 33422 is a production-activity code, while HTS classification is based on the physical characteristics and function of the imported article. Wireless base stations and similar infrastructure equipment typically fall under HTS Chapter 85 headings covering transmission apparatus, but the precise 10-digit subheading depends on technical specifications such as frequency band and whether the unit includes a reception function. A customs broker with telecom hardware experience can assist with the mapping.