Vintage Radio Service Manual - MECK model CD-500 (PX-5C5-EW-19) 5-tube Superheterodyne AM radio receiver combination phonograph record changer. Manufactured by John Meck Industries, Inc., of Plymouth, IN. Dated 1948. 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 phono equipment.