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They had 500-gallon booster tanks, as did Engine 51. In their outward appearance both E-51 and the LACoFD rigs were identical. All the County Ward rigs plus E-51 had Federal Q2B sirens and Grover Stutter-tone air horns. Because the engine did not meet LACoFD specs, the county would not accept the truck as a donation.
An air horn consists of a flaring metal or plastic horn or trumpet (called the "bell") attached to a small air chamber containing a metal reed or diaphragm in the throat of the horn. Compressed air flows from an inlet line through a narrow opening past the reed or diaphragm, causing it to vibrate, which creates sound waves .
A fire truck uses an air horn to alert cars of its presence. Air horn - These devices force compressed air from the vehicle's air brake system against a diaphragm, creating a loud noise. Air horns used on emergency vehicles usually have a distinctive tone so they can easily be distinguished from other large vehicles, commanding urgency.
PG&E crews were also responding to Los Osos Valley Road near Turri Road, where five power poles were knocked down, Corral said. Downed wires in Grover Beach cut power to 1,600 customers.
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The K5LA is the most popular horn in use today, with a B major 6th chord (D-sharp, F-sharp, G-sharp, B, D-sharp). [9] Though first used by Chessie System, [3] it was developed for Amtrak as a variation on the original K horn, and is the standard horn for Amtrak, CSX, Norfolk Southern, [10] and Illinois Central, as well as most commuter and ...