For anyone who follows the broadcasts from Shiokaze, Hiroshi's blog at http://hiroshi.mediacat-blog.jp/ mentions a new schedule effective 25 April 2023:
1300-1400 on 5920 and 6090 kHz
1405-1435 on 5980 and 6070 kHz
1600-1700 on 5935 and 6165 kHz
1705-1805 on 5955 and 7435 kHz
Shiokaze (Sea Breeze) broadcasts to North Korea and is operated by the independent investigating organization "Investigation Commission on Missing Japanese Probably Related to North Korea", regarding persons believed to have been abducted by North Korea prior to 1983. All broadcasts are from Yamata in Japan (300 kW).
As listed in "Broadcasts in English" they usually have an English program at 1300-1400 and 1600-1700 on Wednesdays (otherwise they are in Korean and Japanese)
(BDXC)