Intended to serve as a practical study guide for those applicants interested in obtaining the Radiotelephone Third Class Operator Permit with the endorsement to operate broadcast radio stations, this manual is also designed to be helpful as a concise reference for those operators already active in the field of broadcasting. Chapters 1 and 2 are concerned with basic law (provisions of laws, treaties, and regulations with which every operator should be familiar) and basic operating practice (radio operating procedures and practices generally followed or required in communicating by means of radiotelephone stations). The remaining chapters and the sample test, which is appended, are devoted to basic broadcasting (basic regulatory matters applicable to the operation of AM, commercial FM, and noncommercial educational FM broadcast stations). Basic broadcasting chapter headings are these: The Operator, The Fundamentals, Modulation, Operating Power, Directional AM Stations, Meters, Remote Control, Antenna Lighting, FM: Stereo and SCA, Emergency Broadcast System (EBS), Malfunctions, Station Identification, Documents and Logs, and Related Topics. Illustrative diagrams are included throughout the handbook. Sample copies of AM station, directional AM station, and FM station licenses are appended. (JT)