Vintage Radio Service Manual - PACKARD-BELL model 471 4-tube AC-DC (battery - line operated) Superheterodyne AM radio receiver.  Manufactured by Packard-Bell Company, of Los Angeles, CA. Dated 1947. 4 pages. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro audio equipment.