Radio Corporation of America (RCA). Commercial Electronic System Division. Operator Manual: Type PK-501 TV Camera. Technical Summary includes General, Picture Quality, Electrical, Environmental, and Mechanical. Table of Contents: Description, Installation and Operation, Circuit Descriptions and Schematics, Maintenance Procedures, Parts List, and Supplements (Weatherproofing Kit, Pulse Drive Kit, and Reference Crystal Oscillator). The RCA PK-501 TV Surveillance camera is a compact, self-contained unit which includes its own power supply and is completely transistorized except for the Video pickup tube which is an RCA Type 4478 Vidicon.