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:
Item is called equalizer, noise reduction system; single processor unit with built-in changeover facilities, designed to serve one recorder track during both recording & playback, with monitoring of line-in or the encoded tape signal during recording. The operating mode is set by push-button switches on the front panel. This unit in multitrack work is facilitated by the built-in provision for automatic record-play changeover, controlled from the recorder