OK, wait a minute.. according to your post the siren didn't activate until 4 minutes AFTER the tones were dropped to activate the siren. That's not even possible. If the controller (assuming its an Federal but even if it's a VA2000 Whelen) is going to start the 3 minute timer as soon as the tones d...

My neighboring town has been having some problems with their Model 3 activating. They put an FC on it in 2011. According to one of the council members, during a tornado warning, the siren didn't activate until 4-5 minutes (I forgot the exact time) after tones were sent out. I'm unaware if it happene...

https://www.youtube.com/watch?v=FUTTXzTpQDo

The first test since 9 months of not being tested. Their Model 5 is currently inactive, and is unknown on whether it will be turned back on.

I heard that some of the early 2nd gen SRNs used the Model 5 AC motor. Is there any way to tell the difference of an AC only motor from a typical DC motor with AC controls?

Federal Signal 2001-SRNB (AC only) Algood, TN.

2001-AC

Cookeville's Federal Signal Model 5A

Here's one. The ridiculous part is that they originally had it on a pole on their new Fire Department, but decided to move it back to its current location. https://goo.gl/maps/yPabQ4e2GBjLxujx6 That's a bit of a weird location, though not too unreasonable. What model siren is that?? Model 5A