Awesome recording

[Conky 2000]

No, it can't be, there are no electronic sirens in downtown Cincy, either. I know there's a Modulator up near the airport, and a couple near Newport, but none in downtown.

[FedTB]

After watching and listening to the second video, I stand corrected: it's got to be a 2001 or a T-128. The windup of the louder siren, when it first starts up, is definately that of an electromechanic siren. If you notice, when the horn of the T-Bolt rotates around and faces the camera, it doesn't get very loud, because of the distance between the person filming and the siren itself. But the 2001 or T-128 is much louder, knocking out the fact that some think the T-Bolt is a 1000. You can definately tell that the T-Bolt being filmed is a 1000T.

[jkvernon]

Umm...no. I don't think you read my previous comment. The person said in the video description that both the sirens in the recording are Thunderbolts. The one shown is a single-toned 1000 and the one in the background is a dual toned 1000T. This recording was made in downtown Cincinnati which has absolutly no 2001s or T-128s. I know this to be factual since I have a map of the system, a set of pictures for each of the systems sirens and their locations as well as install dates and I actually know the guys who have been in charge of maintaining and installing the sirens since the first Thunderbolts were installed in 1952. A 2001 has a much more sharp, screechy, and quicker windup than the 1000 in the video and the T-128 sounds nothing like that. Do the research. For the love of God, do the research.

[FedTB]

Um...OK, jkvernon. Why don't you chill a little bit, pal? "For the love of God, do the research." What's that supposed to mean?

They're only sirens, OK? Get a life. Still sounds like a 2001 or a T-128 to me, as I've heard lots of T-Bolt 1000's before, and that one definately sounds like a 2001 or a T-128. But what do I know? I'm not jkvernon, official siren nut, with pictures, maps, dates of installations an' everything!!!! Whoo Hooo!

[Archon]

It sounds like a 2001 because this Single tone T-Bolt has a 6 port rotor in it. Very interesting

[Nelso90]

How can you be so sure?

[Melvin Potts]

I've never seen a siren turn that fast!

Interesting thing about this Tbolt; it's turning counterclockwise.

Until seeing some videos in recent months, I thought that was standard for Tbolts. The ones we had here in Nashville rotated counterclockwise.

Last Tbolt test I witnessed was one in Marietta, GA back in early 90s. It also turned counterclockwise.

However, all the ones I've seen in videos from this site and youtube rotated clockwise.

[AllSafe]

Thunderbolts have a 3-speed rotator. If I remember right, it had 4, 8, and 12rpm settings. The 3-phase ones can also be reversed by reversing two of the current legs.

[Nelso90]

2, 4, and 8 RPM.