After the great successes of last night, I have gone QRT on 10m JT65 and started up on 472kHz WSPR (5mW ERP). At the moment I am on battery power, so the noise floor on RX is very low. I doubt I can repeat the successes of last night, but you never know.
UPDATE 1950z: LA8AV (1035km) has been spotted 3 times already at up to -13dB S/N. There is a chance he could copy me.
UPDATE 1954z: Despite the FT817 being a bit "deaf" on 472kHz, I still hear most of what is going on. I think this proves sensitivity on this band is limited by external noise, so S/N is more important than basic rig sensitivity.
UPDATE 2000z: LA2XPA (1310km) in Kristiansund, Norway has already spotted my 5mW ERP. Promising again this evening.
UPDATE 2238z: LA2XPA (1310km) has spotted me 5 times so far this evening. At the moment conditions on 472kHz seem similar to last night.
UPDATE 2315z: Judging by the spots this evening and yesterday from Norway, I can only conclude that those receiving me up there must have a very low noise floor.