Birdwatch Archive

Birdwatch Note Rating

2023-08-01 00:35:08 UTC - HELPFUL

Rated by Participant: C02275CDFE9A9D8B251495CB38472A1AB42A833DFCEE143E87B7773125B4C68D
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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