The red "P-15" was actually an experimental design that ACA called the "Performance Plus Penetrator". It was one of the earliest DC powered mechanical sirens. This design would later be refined into what we now know as the PN-20 (later as the RM-130), which is another siren type ...

if you're talking about still existing units, those two in minnesota are the only ones left. there were quite a few on the old Fort Worth system, many of which were photographed and uploaded to http://www.civildefensemuseum.com/sirens/fwold/index.html this website. Also, if you dont mind me asking, ...

even though the image is broken, i still know what the photo you're talking about is. its from a stock photo site and its not a siren. idk what idiot put that under the tag "tornado siren".

Probably the Whelen Vortex in Cuba, Ohio. It was perfectly fine when i recorded it back in 2019, albeit slightly quieter than most sirens in the county. When I went there back in august however, it only did a half-second burst of each signal.

kid, there's an Air Raid Sirens wiki for a reason, honestly it's in need of stuff like this.

dat612freakoftoday wrote: ↑

Thu Feb 24, 2022 6:10 pm

I tracked down another Howler about 10 miles away from the Cologne MN ACA Howler.

Do you mean the one in Hamburg or somewhere else? I know ther used to be one in Norwood Young America but it was replaced a few years back by
-of all things- a thunderbeam

Csabi11 wrote: ↑

Thu Feb 24, 2022 2:21 pm

wallaat wrote: ↑

Thu Feb 24, 2022 1:32 am

low mounted thunderbolt holiday texas i think (it looks low)

Oh, I remember this. This the Thunderbolt what was everyone thinked of it is came from Salter Park.

No, Salter park was a different unit entirely, but it was a B-series just like this one.

( from the siren archive ) Dual toned whatever siren this is 1. That's a Model 7 with horns bolted onto it. I don't see why you think its dual tone, but it likely is not 2. This is the wrong thread for this question, please read the entire thread before posting something, not just the newest post. ...

almost all of the fernald locations are not there and haven't been there for years. the only two remnants of the system are the inactive sirens at Crosby Township Elementary School and the fire station in Shandon, Ohio. there also was never two systems that they ran on, the ones in Hamilton county w...

di-did you just bump a 15 year old thread? this info has been posted about before.