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  2. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    The system is inherited from the air raid siren network (défense passive) developed before World War II. It consists of about 4,500 electronic or electromechanical sirens placed all over France. [36] The system is tested each month at noon on the first Wednesday.

  3. Chrysler Air-Raid Siren - Wikipedia

    en.wikipedia.org/wiki/Chrysler_Air-Raid_Siren

    The Chrysler Air Raid Siren is an outdoor warning siren produced during the Cold War era that has an output of 138 dB(C) at 100 feet. It was known as the Chrysler Bell Victory Siren during its first generation, which was between the end of World War II and the fall of the Berlin Wall. It is reputed to be the loudest air raid siren ever produced ...

  4. All clear - Wikipedia

    en.wikipedia.org/wiki/All_clear

    A British air raid siren from the Second World War. All clear is the signal, generally given by an air raid siren, which indicates that an air raid or other hazard has finished and that it is safe for civilians to leave their shelters; it is commonly used in radios as well.

  5. Air-raid siren throughout Ukraine: Russians launch missiles - AOL

    www.aol.com/news/air-raid-siren-throughout...

    As of 13:41 on 5 December, an air-raid siren was sounded in most regions of Ukraine due to the threat of Russian missiles. Source: Alarm Map Details: The head of Odesa Oblast Military ...

  6. After a brief all-clear was sounded, the air-raid siren was again sounded in all the oblasts starting from 11:40. OLHA HLUSHCHENKO - SATURDAY, 22 OCTOBER 2022, 11:50 a.m. Starting from 7:55 a.m ...

  7. Air raid siren? Relic of the past? Here’s the truth about ...

    www.aol.com/news/air-raid-siren-relic-past...

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  8. List of civil defense sirens - Wikipedia

    en.wikipedia.org/wiki/List_of_civil_defense_sirens

    Chrysler Air-Raid Siren; Sentry Siren; SiraTone This page was last edited on 5 August 2024, at 16:06 (UTC). Text is available ...

  9. Civil defense in the United States - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_in_the...

    A Thunderbolt siren in Wisconsin. In 1963, the Federal Communications Commission (FCC) created the Emergency Broadcast System to replace CONELRAD. The EBS served as the primary alert system through the Cold War ICBM era and well into the 1990s. In addition to these, air raid sirens such as the Thunderbolt siren pictured to the right, would ...