As 10m JT65 was going nowhere, I returned instead to 472kHz WSPR (5mW ERP from the earth-electrode "antenna"). I am on battery power so my noise floor is low on RX. So far just a spot by G0LRD (25km).
UPDATE 1400z: Another 2 spots by G0LRD shows that he is just copying me! With JT9-1 this would probably not have been possible.