MRC:
						Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.FEAT
					 
					
						Special Features:
					
					
						Kra405b arinc 552a w/tone gen. System includes the kra 450b receiver/transmitter,  a kni 415 (fixed wing),  or kni 416 (helicopter) radar altimeter indicator,  two ka 54a antennas. Altitude accuracy +5 ft. 27.5 dc 20% at 850v power requirements. Transmitter output 660mw . Center frequency 4300 15 mhz. Modualtion frequency;  primary rt 100 hz ,  secondary rt 105 hz  (dual installaion). Fcs warn normal operation +18 to +30vdc at less than 250ma