At some point in the future I intend to JT9-1 beacon on 472kHz. Some years ago, at the old QTH, I worked a couple of countries on 472kHz JT9-1. I have not tried this mode on this band at the current QTH. For now, I have gone back to 472kHz (630m) WSPR.
UPDATE 2100z: Since going back on MF I noticed an S8 RX noise floor. Last year it was S1-2. This turns out to be the SMPSU that charges my laptop battery. The laptop was new. It means I will have to disconnect the charger when wanting to seriously listen on 472kHz.
UPDATE 2200z: M0FMT, M0XDK and G8LCO have spotted me all evening. Best DX so far is M0XDK (80km).