A friend Richard G3TFX has just sent me this link. Jim Bacon G3YLA was a well known BBC weather forecaster. He has a keen interest in sporadic E (Es) propagation. He is a well known radio amateur.
You need to chose the date you want.
See http://www.propquest.co.uk/blog.php?date=2019-05-01
Thanks for that link, Roger.
ReplyDeleteRegards,
Keith G0RQQ