SD-10 or Allertor in Attack

[kswx29]

http://www.youtube.com/watch?v=1EQ36WkjuJk

[Allertor113]

Most likely an Allertor since it doesn't peak at the same pitch as an SD-10.

[dilloncarpenter]

It doesn't sound like it's rotating, though... But I can tell it is an ACA siren because of the higher tone from the 12 side being dominant. It could be underpowered as well.

[carexpertandy]

If you look in this person's YouTube profile, he says he's from Rolla, Missouri, and I searched on this site for sirens in Rolla, and all I found was this topic that discussed a Thunderbolt in Rolla. Does anybody know if Rolla has anything that would be a 9/12 port siren?

Topic with Thunderbolt: http://www.airraidsirens.com/forums/vie ... ight=rolla

[TBOLT1000]

it could also be an allertor with a broken rotator or a dual tone screamer being run on a lower voltage.

[uncommonsense]

Listen closely and you can faintly hear a 2001 in there.

There's that Thunderbolt (mentioned above) in Rolla one can see from I-44 across from the Missouri Science and Technology residence halls, but that's all I know of their siren system. Rolla's a dirty, cluttered town and I don't much like stopping there if I can avoid it.

Whatever that siren is (and it sounds VERY much like an Allertor), it sounds like it is on its last legs.

EDIT: I've got myself on the prowl for this mystery siren because now I'm curious, seeing that I have to go past Rolla whenever I drive to St. Louis. They hide their sirens well; I found an article saying they have 21 sirens (!). I've managed to find a 2001 so far.

http://maps.google.com/maps?f=q&source= ... ,,0,-10.87

Another 2001: http://maps.google.com/maps?f=q&source= ... 8,,1,-2.16

[FedSig-Kid]

Are you talking about the T-Bolt on Bishop Ave? Because There is also another T-Bolt I've spotted in a park in Rolla.

YouTube user "KeoghJacob" has a video of the T-Bolt on Bishop Ave.

http://www.youtube.com/watch?v=MknKgnreEg0

[Archon]

Sounds to me like a single Phase 5T

[Adam Pollak]

Rolla does have 1 5T in their system.

[FedSig-Kid]

That solves it. It sounded pretty low pitched.

Where is it located? If you know the location, I can go and take some pictures of it.