Vintage Radio Service Manual - PHILCO model 46-142 5-tube (battery operated) Superheterodyne AM radio receiver. Manufactured by Philco Corp., of Philadelphia PA. 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.