Description: The Storm whistle is twice as loud as any other mouth-blown whistle in the world. With a standard whistle- nonproductive high frequency (over 5000 hertz) and nonproductive low frequency (below 2000 hertz) sounds are created. Because of the patented harmonic chamber that is unique to the Storm whistle- these high and low frequency sounds are recycled and focused into our extremely loud single 3150 hertz frequency of double the standard amplitude. Used by U.S. Coast Guard- Washington- D.C. - New York Police Department & many more Be heard !
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