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Potter County to receive new solar-powered emergency siren
AMARILLO, Texas (KFDA) - The Amarillo Area Office of Emergency Management (OEM) is placing two new emergency sirens in Potter County, one of which is solar-powered. There are just over 100 ...
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Primary History KS2: WW2 Clips. An air-raid siren sounds the ‘all clear’
In cities the sirens were powered electrically and produced two signals.The first was the warning - a rising and falling signal, created by varying the power to the siren. The second was the all ...