Ray of the Radio Workshop with the very amusing and well told story of offshore radio station Ocean Radio, which transmitted with 10 watts on medium wave one Sunday 200 yards from Worthing Beach (on the south coast of England), and how the GPO raid when the operator came back in was unsuccessful.
If you go to his YouTube channel there's a 30 minute video, which he mentions, about how 19 sets were used for pirate transmissions on the Combined Cadet Force nets, the Echo Charlie. marine and amateur bands he's also posted this week.
His extensive vintage radio repair and restoration website.
(Mike Barraclough, Radio Anoraks UK Yahoo group)