Vintage Radio Service Manual - ADMIRAL model 7T06 & 7T12 (Chassis 4B1) 4-tube. Superheterdyne AM radio receiver. Manufactured by Admiral Corporation, of Chicago, IL. 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 audio equipment.