Template:Air Raid Sirens Wiki/Did you know: Difference between revisions

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...that the Surry Power Station's activation sequence for their system results in a distinct "triple windup"?
...that, although having two more cells, the Modulator II 8032B is still 23.64 inches shorter than the Modulator 6048?
...that the national siren system in Denmark is one of the largest single systems using Whelen sirens, with 1,078 sirens covering 80% of the country?
...that the Model 2 is the oldest siren currently in production, dating back to around 1921?
...that Fort McPherson, Northwest Territories, and Cambridge Bay, Nunavut, are home to two of the few sirens located north of the Arctic Circle, both STH-10s?
...that, contrary to popular belief, the "2001-DC" is not a model in itself, but rather refers to battery-equipped units in general?

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