Air raid sirens being tested on May 2nd.
These are Whelen sirens. Whelen is the company. The real name is Whelen Engineering Inc. The outdoor warning sirens are made in Chester, Coneticut in the USA. These are using Whelens Eroupean tones. This is i think the Best Possible Protection tone.
I like this
Noise . Bad !
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920 x 245
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375 x 30
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