Vintage Radio Service Manual - HALLICRAFTERS model S-40A 4-band 9-tube Superheterodyne commercial AM SW radio receiver. Manufactured by Hallicrafters Company, of Chicago, IL. Dated 1948. 6 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.