§ 21.3 - Station authorization required.

(a) No person shall use or operate apparatus for the transmission of energy or communications or signals by radio except under, and in accordance with, an appropriate authorization granted by the Federal Communications Commission. Except as otherwise provided herein, no construction or modification of a station may be commenced without an authorization from the Commission. Authorizations for domestic public fixed radio services are governed by the provisions of this part.

(b) If construction and or operation may have a significant environmental impact as defined by § 1.1307 of the Commission's rules, the requisite environmental assessment as prescribed in § 1.1311 of this chapter must be filed with the application and Commission environmental review must be completed before construction of the station is initiated. See § 1.1312 of this chapter.