Federal Signal 500AT
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hah was just thinking the same thing!!
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Sounds like a cross between a 2/3t22, and a thunderbolt 1000t/3.
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Wow. That is the strangest sounding siren I think i've ever heard.
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Thats sounds very simular to Thunderbolt
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We have 1 of these in town, Delavan WI, this is the closest to me so I hear it Whenever we have a Severe storm or a tornado, just scrares me.
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The first and second generation Federal Signal 2001 both use the same rotator as the Thunderbolt.
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I'm not certain if that is true but I know that the 2001 series has the same rotator motor as the Thunderbolt
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the STL-10 and 500AT sounds scary as hell.
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Even though it is a damn shame that they're replacing this beautiful sounding beast, it probably is a good thing because from the looks of it, the rotator's right-angle reduction gearbox is about to give out, as it keeps getting hung up in spots, especially when it's winding down. Definitely my favorite siren out of all the rotating dual tone sirens!
murrfarms 2 years ago
One of our old 500ATs rotation stoped, and would hang up all the time too. That's probably what happened to it. Although it is sad to see the sirens go, each year I'd say about 10 of the older sirens would fail at one point or another. Not a real reliable system. But there were the older sirens that were probably more reliable then the newer ones. Either way the pros outway the cons.
jayhawk29 2 years ago
I swear I can hear a dual tone Tbolt at about 0:50. I don't think the 500 was playing tricks on my ears, since it was definitely at a lower pitch than the 500.
cauberallies 3 years ago
The closest Thunderbolt from that location is 1.5 miles away. I think the sound you heard was an ambulance sounding an air horn tone as it approached a major intersection.
jayhawk29 3 years ago