The strange thing was that I was the only station who heard him around that time (18:20UT) outisde the US and Antarctica, despite the very high output. Oddly, though it appears on the map, I can find no reference at all to the HB9 spot in the WSPR database, either in TX or RX in relation to Neil's station:
The terminator is correct for the time of the spot. I am not sure as to the path taken, as ZL is very near the precise antipodean point to the UK, and the geometry of the greyline seems to make either (or both) paths just as likely. I tend to think it was a path involving antipodean focusing, which was just about enough to enhance the signal to detection limits (I heard him at -26dB).
I didn't hear Neil again until 06:52UT this morning, where a few other stations in Europe were also now hearing him.
Certainly something to look out for in coming days, if the very high winds of up to 130km/h over the next 24 hours permit!
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