IEC 60244-4A:1976
无线电发射机的测量方法 第4部分:无线电话和声音广播发射机的幅/频特性及非线性失真 补充1:第3节
Methods of measurement for radio transmitters. Part 4 : Amplitude/frequency characteristics and non-linearity distortion in transmitters for radiotelephony and sound broadcasting. First supplement: Section three