MOTOR SHAFT IN TAPE TRANSPORT DRIVES AN ELASTOMER COATED WHEEL IN TAPE CARTRIDGE WHICH DRIVES MAGNETIC TAPE BY MEANS OF BELT SYSTEM; CARTRIDGE CONTAINS 450 FT USABLE LGTH OF 1/2 IN TAPE; BODY OF CARTRIDGE IS ALUMINUM; BELT SYSTEM USED TO DRIVE MAGNETIC TAPE USES A SPECIAL GEOMETRY WHICH ALLOWS THE USE OF NON-ELASTIC (STIFF) BELT MATERIAL; TYPE OF INSTALLATION: GENERAL GROUND OR AIRBORNE USE