Vintage Radio Service Manual - MECK model CE-500 (5C5-P12) 5-tube Superheterodyne AM radio.  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 audio equipment.