From JA7QVI :
Good news for low banders. The 1.8MHz band has been expanded today in Japan from April 21, 2020. Therefore, the frequency that can be QRV is 1800KHz to 1875KHz, and the conventional 1907.5KHz to 1912.5KHz. From today, Japanese stations will QRV to FT8 mode at 1840KHz in simplex. In the near future, QRV will be possible for SSB mode if each person applies. See you on 1840KHz!