Vintage Radio Service Manual - TELE-TONE model 150, 161, 162, 167, 168, 171 & 174 (Chassis Series T) 4-tube Superheterodyne AM radio receiver. Manufactured by Tele-tone Radio Company, of New York, NY. 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.