To: Dog
again? BTW how does one know the difference between air raid sirens and the all clear signal?
2,959 posted on
03/20/2003 2:13:36 PM PST by
knak
(kelly in alaska)
To: knak
I think it's a second serin after the 1st one stops. the one they don't want to here is a soild serin, no up and down.
To: knak
Air raid sirens generally oscillate up and down. An all-clear is a constant tone
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