GB/T 5581-1985 75波特/180 Hz调频音频电报机技术要求和测试方法

标准编号：GB/T 5581-1985

标准名称：75波特/180 Hz调频音频电报机技术要求和测试方法

英文名称：Specification and measuring method of frequency-modulated voice-frequency telegraph set for a modulation rate of 75 bauds with channels spaced at 180 Hz