MRC:
Characteristics or qualities of an item,not covered in any other requirement,which are considered essential information for one or more functions excluding nsn assignment.SUPP
Supplementary Features:
Opr temp: +60 degrees to +90 degrees f; non-opr temp: -30 degrees to +140 degrees f; altitude: 0 to 20, 000 ft; item provides the host system (normally ibm eqp) a multiple speed (10, 12.5, 18.75, 25, 37.5, & 45 inches per sec), 7 or 9 track read/write recovery capability to move 1/2 inch magnetic tape across a read/write head in response to commands from remote eqpt or to signals generated from the operator's control panel located on the transport