ITU-R BS.498-2 SPANISH-1990
关于在低频(LF)和中频(MF)两个广播频段中电离层的交叉调制.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)

IONOSPHERIC CROSS-MODULATION IN THE LF AND MF BROADCASTING BANDS

ITU-R BS.498-2 SPANISH-1990 发布历史

The CCIR, considering that excessive radiation towards the ionosphere may result in ionospheric cross-modulation and hence harmful interference,unanimously recommends that the maximum permissible radiation at any angle of elevation should be such that annoyance due to ionospheric cross-modulation does not exceed that agreed for co-channel interference (see Recommendation 560).

ITU-R BS.498-2 SPANISH-1990由国际电信联盟 IX-ITU 发布于 1990-01-01。

ITU-R BS.498-2 SPANISH-1990 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.498-2 SPANISH-1990的历代版本如下：

• 1990年01月01日 ITU-R BS.498-2 SPANISH-1990 关于在低频(LF)和中频(MF)两个广播频段中电离层的交叉调制.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.498-2 SPANISH-1990

发布日期

1990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

The CCIR, considering that excessive radiation towards the ionosphere may result in ionospheric cross-modulation and hence harmful interference,unanimously recommends that the maximum permissible radiation at any angle of elevation should be such that annoyance due to ionospheric cross-modulation does not exceed that agreed for co-channel interference (see Recommendation 560).