ITU-R BS.639 FRENCH-1986
低频(LF),中频(MF)和高频(HF)广播中发射过程中所需的必要带宽.第10A-1部分:振幅调制声音广播频段5(低频LF),6(中频MF)和7(高频HF)

Necessary Bandwidth of Emission in LF MF and HF Broadcasting - Section 10A-1 - Amplitude-Modulation Sound Broadcasting in Bands 5 (LF) 6 (MF) and 7 (HF)


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标准号
ITU-R BS.639 FRENCH-1986
发布日期
1986年01月01日
实施日期
废止日期
中国标准分类号
M60;M63
发布单位
IX-ITU
适用范围
In an amplitude-modulation double-sideband sound broadcasting system the bandwidth of emission is approximately twice the audio-frequency bandwidth of the programme and, therefore, greatly influences the quality of reception. On the other hand, for a given frequency separation between adjacent channels, a limitation of the bandwidth of emission is desirable to avoid mutual interference.




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