For receivers having audio-frequency band widths generally not exceeding 10 kHz for reception of voice and other types of signal using (a) angle modulation (phase/frequency modulation), or (b) double-side band amplitude modulation with full carrier. To be read in conjunction with BS 6160-1Cross References:IEC 60315-1IEC 60315-2IEC 60489-1IEC 60489-2IEC 60489-6IEC 60716