CFR›Title 47›Chapter I›47 CFR Part 13 Citation47 CFR Part 13ContainsSubject groups Examination System–GeneralCorpusDaily eCFRDisplayed edition2026-11-02Last updated2026-11-02 PART 13—COMMERCIAL RADIO OPERATORS Subject Groups Examination System Examination System General General Authority47 U.S.C. 154, 303.Source58 FR 9124, Feb. 19, 1993, unless otherwise noted.