The quoted power requirement in the SCMP article converts to 211 horsepower; the specs sheet says 220. So it requires quite a bit more power than the Chrysler did, and yet is 8db quieter? Even a T-135DC is louder...
The video, IIRC, is from 1984. The Mod is much newer than that; my guess is that the siren they were howling along with was a Thunderbolt, like most of Chicago's system was at the time.
Just a wild-@$$ guess here, based solely on the shape of the housing, but it looks a bit like a Decot to me. Not sure if the timeframe is right, though...
Wonder when it went in. My dad grew up in Dansville, and he remembers there only being one siren in town, the VFD fire siren. From his description of the housing, I suspect that was a 3/5/7 (when I asked, he specifically recalled only two louvers, counting the extension of the cap), and it was right...
Aha! So that explains why I'm now hearing multiple sirens instead of just the one at the fire station! I'd been wondering... now, if only the image was a bit bigger so I could make out where to go to scout 'em out. ;) I'm also pretty certain that there must be a 2001 gap-filler somewhere between the...
...you know, that might be an epic way to get people's attention with outdoor warning sirens, if someone could figure out a way to get them to "wow-ow-ow" like the dog does at the end of each one...
I'm hardly an expert, but given that it starts each signal, then cuts off partway through, I'd be willing to put good money on it being a problem in the controller. Exactly WHAT, I don't know--anything beyond the most basic DC circuits is a dark art, in my book--but it can't be a physical problem wi...
Actually, looking at it, the various siren codes don't appear to be for any particular model or supplier, but instead indicate a *class* of sirens, based on output levels, as shown on the first page--Code 611 would be any siren under 100dB at 100 feet, 612 would be any from 100 to 104, 613 would be ...