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  2. Q2B - Wikipedia

    en.wikipedia.org/wiki/Q2B

    A fire truck running the E-Q2B siren. Today Federal Signal's Q2B siren is still in wide use. The majority of users of the Q Siren are fire departments, although some ambulances and heavy rescue squads have employed the Q-siren. The Q-siren produces 123 decibels at 100 feet (30 m) with an operating current of 100 amps at 12 V DC (1.2 kW). [1]

  3. List of sirens built by Alerting Communicators of America

    en.wikipedia.org/wiki/List_of_sirens_built_by...

    This siren is similar to Federal Signal's Thunderbolt series. Only a single unit remains in service in Milwaukee, WI. Screamers Electro-Mechanical 2, 5, 7.5, 10 8, 9, 9/12, 10/12 1968–1994 Omni Directional 102–115 dB at 100 ft. Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95

  4. List of civil defense sirens - Wikipedia

    en.wikipedia.org/wiki/List_of_civil_defense_sirens

    Thunderbolt (siren) Federal Signal 3T22 / 2T22; Federal Signal Model 2; Federal Signal Modulator; Federal Signal STH-10; Other. Chrysler Air-Raid Siren; Sentry Siren;

  5. Federal Signal Corporation - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Corporation

    By this time, it made outdoor warning sirens, police sirens, fire alarms, and outdoor lighting. By 1961, Federal Sign and Signal had gone public, trading on the NASDAQ market. This was when new products started being manufactured and sold, such as the Federal Signal STH-10. In 1976, the company became Federal Signal Corporation. On Feb 22, 2000 ...

  6. Federal Signal 3T22 - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_3T22

    A Federal Signal 2T22 siren. The Federal Signal 3T22 and 2T22 are dual-tone, mechanical outdoor warning sirens made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation) from 1952 through the early 1990s. Both have a very recognizable design, with a ten-port rotor (chopper) on the bottom with ten cones (horns) and a 12 ...

  7. Did you hear the sirens go off last night? Here's what caused ...

    www.aol.com/did-hear-sirens-off-last-184304224.html

    Technical issues caused the sirens to go off in some western suburbs including, Grimes, Urbandale, Waukee and West Des Moines around 9 p.m. Sunday, according to an official with the Polk County ...

  8. Federal Signal STH-10 - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_STH-10

    The Federal Signal STH-10 is a discontinued omnidirectional siren produced by Federal Signal over a span of 50 years. [ 1 ] It is a 12 Port Omnidirectional 10Horsepower siren, most examples are still around today.

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