ETSI ETS 300 441 A1-1998 电磁兼容性和无线频谱物质(ERM).用于遇险和呼叫频率2,182 kHz的海事无线电话监视接收机的技术特性和测量方法
Electromagnetic Compatibility and Radio Spectrum Matters (ERM); Technical Characteristics and Methods of Measurement for Maritime Radiotelephone Watch Receivers for the Distress and Calling Frequency 2 182 kHz