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)

ITU-R BS.639 FRENCH-1986 发布历史

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.

ITU-R BS.639 FRENCH-1986由国际电信联盟 IX-ITU 发布于 1986-01-01。

ITU-R BS.639 FRENCH-1986 在中国标准分类中归属于: M60 广播、电视网综合,M63 节目传输。

ITU-R BS.639 FRENCH-1986的历代版本如下：

• 1986年01月01日 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)

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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

无

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.