Refers specially to mobile radio receivers having audio-frequencyband-widths generally not exceeding 10kHz for the reception ofvoice and other types of signals, using:a) angle (Type G or F: phase or frequency) modulation, orb) double-sideband amplitude (Type A) modulation with full carrier,c) or single-sideband amplitude (Type H, J or R) modulation withfull, reduced or suppressed carrier.Standardizes the definitions, conditions and methods of measurementused to ascertain the performance of selective-callingreceiving-decoders.