Broadmoor Hospital Siren Test.
The Broadmoor Siren
Every Monday morning at ten o'clock the deafening sound of an air-raid siren disturbs the peace over a large area of the leafy commuter belt that is Berkshire, UK. The signal sounds the familiar alternating high-low note, followed by a constant all-clear note five minutes later.
It's not a re-enactment of the Blitz; it's a test of the escape alarm at the local mental hospital, Broadmoor.
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