Vintage Radio Service Manual - GLOBE Model 500 portable, 5 tubes, AC-DC Superheterdyne AM radio receiver. Manufactured by Globe Electronics, Inc., of New York, NY. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. Dated 1947. 4 pages. This manual would make a sensational accompaniment to your retro audio equipment.