Well, I did some Google Maps hunting in Canton, TX a while ago and found a couple sirens around there. To be specific, a Thunderbeam at a park and a newer Model 2 at the water tower across from the high school.
There's also a dual-tone Banshee at the huge flea market there, which I have seen multiple times, and, according to a friend, a Screamer at a fire station.
The Thunderbeam does not appear to be hooked up. However, if memory serves, all the other sirens appear to be hooked up.
A Google search reveals that they do indeed have a system in place, see here: http://thecantonherald.com/articles/201 ... -next-week
Do any of you know of any other sirens there?