Birdwatch Archive

Birdwatch Note Rating

2023-07-31 01:08:09 UTC - HELPFUL

Rated by Participant: F59D7D717E3A62371F8BFCE51FDB03B0421B5F064176C7050AA9CFF7C86D653F
Participant Details

Original Note:

44年前の1978(昭和53)年。この日の早朝5時より、それまで10kHz間隔だったラジオの中波放送(AM放送)の周波数が、すべて9kHz間隔へと変更。以降、現在に至るまでAM放送局の周波数は「9の倍数」となっています。 18を分解すると「1+8=9」で最終的に9になります。 https://kaigoshoku.mynavi.jp/contents/kaigonomirailab/news/today/20221123_00/

All Note Details

Original Tweet

All Information

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