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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.
Squad 51 is a 1972 Dodge D-300 truck, one of three identical body-style rescue squad vehicles ("squads" or squad truck) that were used in the filming of the television series Emergency! Later models were retrofitted with 1972 model year grilles, so that the extensive stock footage filmed of the squad on city streets could continue to be used.
Major Fortune 500 companies including Cisco and Mattel describe how they’re showing up for Los Angeles-based employees during the fire emergency Brit Morse, Lila MacLellan, Sara Braun Updated ...
An air compressor blows the air into one set of horns, and then it automatically switches to the other set. As this back and forth switching occurs, the sound changes tones. Its sound power varies, but could get as high as approximately 125 dB, depending on the compressor and the horns.
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