Methods of measurement for radio transmitters - Part 3: Wanted and unwanted modulation - Second supplement: Unwanted modulation, including hum and noise modulation
无线电发射机的测量方法 第3部分:想要和不需要的调制 第二补充:不必要的调制 包括哼声和噪声调制
Defines general terms relating to unwanted modulation and terms relating to amplitude and frequency-modulated transmitters. Specifies general measurement conditions and methods of measurement for FM and AM noise and hum levels.