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Q&A Under optimal conditions, how far could an emergency whistle be heard?

Whistles are often used for emergency signalling, it would be good to know how far that signal can travel and still be recognized. There are plenty of factors that would affect the distance, so ho...

2 answers  ·  posted 6y ago by Charlie Brumbaugh‭  ·  last activity 6y ago by System‭

Question emergencies whistles