Compressed-air diaphragm horn: Difference between revisions
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Latest revision as of 08:27, 17 September 2026
Compressed-air (diaphragm) horn
A fog signalling apparatus comprising a resonant horn excited at its throat by impulsive emissions of compressed air regulated by an elastic diaphragm.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
