Thanks Ian for the info. I agree, the Attack signal they used before was much more effective, particularly on the Tbolts.

Not sure if these are coming from Paducah or nearby Calvert City. I thought Paducah still had Tbolts which sound in Attack, but these sirens sound in Alert.
http://www.youtube.com/watch?v=Si7x8kiR9jY&fmt=18

Three of our sirens that I know of, all Thunderbolts, have been taken down within the last month or two, and two of them have been replaced with 2001-130's, while the location of the other Thunderbolt currently has an empty new pole. Sadly, it looks like Louisville may have finally gotten the money ...

This is from Amtrak3501.
http://www.youtube.com/watch?v=f3XeTfmo2cE&fmt=18
This siren does a full 3 minutes of both Alert and Attack. According to the video description, this T-128 replaced a sick 2T22.

Thanks, Ian. Sometimes it's hard to tell between the two especially if the audio quality isn't great.

http://www.youtube.com/watch?v=zdtwu-RNaI8&fmt=18
I thought this was a Model 5 when I first heard it, but after listening to it again, I'm not sure. The wind-down seems a little fast to me for an STH, but the tone seems right.

McAlpine Locks and Dam is located here in Louisville, KY. I knew there was a whistle at the locks, but I didn't know about the Model 2 at the spillway. Thanks for posting!

I'm surprised nobody mensioned this one...One of the most epic wind-downs I've ever heard... http://www.youtube.com/watch?v=btET7POpVYM&fmt=18 These two from the Lansing, MI area are good too. http://www.youtube.com/watch?v=4mhkXGW9Bgc&fmt=18 http://www.youtube.com/watch?v=0FT4bk5gRI4&fm...

Please read descriptions for more information.

SD-10 at Worden Electric in Cincinnati 09-28-2013
2001's and Modulator in Louisville
EOWS-115 controller

How does the horn size on that 2001 compare to a Thunderbolt?