Vintage Radio Service Manual - SENTINEL model 314E, 314I, 314W, IU-314E, IU-314I & IU-314W  (also listed as model: 314-E, 314-I, 314-W, IU-314-E, IU-314-I & IU-314-W) 5-tube Superheterodyne AM radio receiver. Manufactured by Sentinel Radio Corp., of Evanston, IL. Dated 1948. 4 pages. Original old Sams Photofact manual includes schematic, layout, alignment instructions, dial cord drive, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro audio equipment.