There is a test tone on 765:
http://norfolk.george-smart.co.uk:8073/?f=765.00amz7 [Indeed, a tone with irregular short “dots” in between. / Ed]
There is no station listed in the UK on that freq at this time.
There is the discussion I got the info:
https://members7.boardhost.com/PirateRadio/msg/1650191951.html
BBC Essex used that freq, but has been switched off. They used that site:
http://tx.mb21.co.uk/gallery/gallerypage.php?txid=1203&pageid=1229
Marco (2022-04-17)