Vintage Radio Service Manual - BENDIX model PAR-80  (PAR-81A). 6-tube portable Superheterodyne AM SW LW (broadcast marine air) radio receiver. Manufactured by Bendix Radio, div of Bendix Aviation Corp., of Baltimore, MD. Dated 1948. 6 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.