Compressed-air diaphragm horn: Difference between revisions
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Revision as of 00:16, 25 February 2009
3-2-150
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)
