Possible Clues:

• Radio’s studied later, after accident or crisis?
• Danger signal
• Ginger beer right for crisis situation
• Severe warning upset the German — later modified
• Emergency warning
• Ginger beer served at right temperature in crisis situation
• Warning: treadle right out of skew!
• Beer right after wine, when one’s ready for anything?
• Serious warning
• Socialist later revised warning