Vintage Radio Service Manual - HEATH model HBR-5 Battery operated, 5-tube, Aircraft Beacon Superheterodyne Receiver radio.  Manufactured by The Heath Company, of Benton Harbor, MI. Dated 1947. 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 radio equipment.