"One day many years ago a man walked along and stood in the sound of the ocean on a cold sunless shore and said "We need a voice to call across the water, to warn ships; I'll make one. I'll make a voice that is like an empty bed beside you all night long, and like an empty house when you open the door, and like the trees in autumn with no leaves. A sound like the birds flying south, crying, and a sound like November wind and the sea on the hard, cold shore. I'll make a sound that's so alone that no one can miss it, that whoever hears it will weep in their souls, and to all who hear it in the distant towns. I'll make me a sound and an apparatus and they'll call it a Fog Horn and whoever hears it will know the sadness of eternity and the briefness of life.""
The Fog Horn blew.
"I made up that story," said McDunn quietly, "to try to explain why this thing keeps coming back to the lighthouse every year. The fog horn calls, I think, it comes..."
Chrysler Air Raid Siren, the most powerful siren in the world. It's the size of a car, measuring near 12-feet in length and standing more than 6-feet tall. It also weighs twice as much as today's typical car. This gigantic siren is powered by an 180-HP Chrysler Industrial V-8 HEMI® gasoline engine. The super-duty engine directly drives a three-stage compressor that blows 2,610 cubic feet of air a minute, at nearly 7 PSI, into a giant siren rotor. The compressed air screams through the chopper and out through six giant horns with an exit velocity of 400 miles per hour. The result is an incredibly loud 138 dB sound (measured 100 feet from the siren).
The Chrysler Air Raid Siren is so powerful that it can reportedly start fires with just the sound vibrations it produces. It can turn fog into rain, clearing the sky. It can produce an effective 70 dB air raid signal for a distance of two miles, and under proper conditions can be heard 30 to 50 miles away.
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