THE PRINCIPAL TERMS AND DEFINITIONS USED IN THE STANDARD ARE DEFINED, AS ARE THE MOST CRITICAL ITEMS OF TEST EQUIPMENT NEEDED TO PERFORM THE NECESSARY MEASUREMENTS. CHARACTERISTICS MEASURED INCLUDE REPEATER SENSITIVITY, CARRIER OUTPUT POWER, FREQUENCY DEVIATION, MODULATION LIMITING, AND AUDIOFREQUENCY HARMONIC DISTORTION. FOR FIXED REPEATERS, THESE REQUIREMENTS COMPLEMENT THOSE ESTABLISHED BY THE NATIONAL INSTITUTE OF LAW ENFORCEMENT AND CRIMINAL JUSTICE (NILECJ) FIXED AND BASE STATION TRANSMITTER AND RECEIVER STANDARDS. LIKEWISE, FOR MOBILE REPEATERS, THESE REQUIREMENTS COMPLEMENT THOSE ESTABLISHED BY THE NILECJ MOBILE TRANSMITTER AND RECEIVER STANDARDS. THIS STANDARD APPLIES TO REPEATER SYSTEMS WHICH EITHER DO NOT HAVE SPECIAL SUBSYTEMS SUCH AS TONE CODING OR SELECTIVE SIGNALING, OR IN WHICH SUCH SUBSYSTEMS ARE BYPASSED OR DISABLED DURING TESTING FOR COMPLIANCE WITH THIS STANDARD.