This thread is intriguing to me. I have been curious about this photo of a Super Sirex featured in the article about Civil Defense in the 1969 World Book encyclopedia. The photo is credited to the "Chicago Civil Defense Corps. The documentation apparently not only verifies that Chicago had Supe...

Very good job. You'll be the talk of the neighborhood!

FWIW, Del City tested the ATIs today.

Try the City of Moore. They test every Saturday at noon. They have a bunch of Modulators, 5 refurbished Thunderbolt 1000Ts, a couple of refurbished 2t22s, 2 508s, and a 2001 DC. Somebody probably has a map of where they all are. I don't think I do.

The Del City Thunderbolt at I-40 and Sunnylane has been out of service since the ATI system was installed three or so years ago. Del City had all of its old sirens removed and they went to the Oklahoma town of Luther. The remaining Thunderbolt is supposed to eventually be removed and reinstalled as ...

That's a MOD in Ian's video above. It sounds just like the MODs at Tinker AFB when they sound in "attack". It has been a while since I have been in Purcell, but either every day at noon or Friday at noon or Wednesday at noon the Purcell MODS play the Westminster chimes: The point being, th...

Del City Oklahoma activated a system of 8 ATI sirens in the fall of 2012. They test voice and tone most Saturdays at noon. The Fire Department would be the appropriate contact.

Del Crest ATI by woodyrr, on Flickr

Very nice! I'll be looking for updates.

I have never been inside the fence. I'm sure whatever was there a few years ago when it worked ("worked" in the case of this particular Thunderbolt is a relative term) is still there.

It's siren test day in Dallas. I just heard the recently installed 2001 around the corner in attack. Yes, I realize I am bumping an old thread, but I have been meaning to take a photo of this siren that is located near my brother's house. This decommissioned Thunderbolt 1000 is on fire station 4 at ...