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  2. Germany retests its emergency warning system but Berlin's ...

    www.aol.com/germany-retests-emergency-warning...

    Warning messages sounded on cellphones and alarms blared across Germany as part of a nationwide test of the emergency alert system Thursday, but in Berlin the sirens stayed quiet. The latest ...

  3. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    These sirens, mostly built by Carter, Gents, Castle Castings, and Secomak (now Klaxon Signal Co.), have 10 and 12 ports to create a minor third interval (B ♭ and D ♭ notes) and are probably the world's most recognised World War II air raid siren sound. Recordings of British sirens are often dubbed into movies set in countries which never ...

  4. Rüsselsheim massacre - Wikipedia

    en.wikipedia.org/wiki/Rüsselsheim_massacre

    During the attack, an air raid siren sounded and the mob ran for cover. Adams and Brown managed to crawl from the bloody cart and fled toward the Rhine River, avoiding capture for four days. However, they were discovered by a policeman and taken to their original destination, the camp in Oberursel where they remained until after the war in ...

  5. Emergency population warning - Wikipedia

    en.wikipedia.org/wiki/Emergency_population_warning

    In France, the population warning is made via air raid siren. This network is called the "Réseau national d'alerte" (RNA). 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.

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

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  7. Siren Tour - Wikipedia

    en.wikipedia.org/wiki/Siren_Tour

    A Siren Tour was a night-time mission by the RAF Bomber Command, mostly in northern Cambridgeshire, involving three or four two-engined fast bomber aircraft, to set the German air-raid sirens off in the middle of the night, so waking up the whole German town at three o'clock in the morning.

  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 under the Creative Commons ...

  9. Siren (alarm) - Wikipedia

    en.wikipedia.org/wiki/Siren_(alarm)

    In Germany and some other European countries, the pneumatic two-tone (hi-lo) siren consists of two sets of air horns, one high pitched and the other low pitched. 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.