Synther wrote: ↑Sat Aug 03, 2019 7:20 pm
archizackture wrote: ↑Sat Aug 03, 2019 4:44 pm
Interesting. I'm looking at that pipe and wondering if that's a diaphone kind of mechanism? The one at USRFD has a pipe like that but it seems to be an electrical conduit with a visible breaker box on the side. And what I heard was EXACTLY like a Whelen in wail tone (continuously cycling up and down without pausing).
I'm 99% sure that thing wasn't playing a Whelen wail tone. It's a diaphragm horn. As for the disconnect you saw, perhaps it's some sort of shutoff for an electric valve in the box the horns are mounted on?
Well in that case, I need to figure out where the wail tone was coming from! The only other siren I know of within a 3-mile radius is an STH-10 (Tallman fire dept.) that, of course, doesn't sound like an electronic wail tone.
I did more searching and found that some ATI sirens make the same wail tone, such as in this video:
https://youtu.be/kvQAaRWCsw0?t=32
It was that EXACT sound, it went up to the same pitch and fell again without pausing at the high point, repeat over and over. Of course, it could have also been a Modulator doing that tone as well, and it was hard to tell due to the distance. The nearest Modulator is 7 miles away though.
We're actually near the Indian Point Nuclear Power Plant siren system, which uses ATIs. However, the nearest one is several miles away and it wasn't testing day (they test Wednesdays and it was Friday around 6:30). Intriguing... I'll keep searching around.