Goldendale, Washington has a Federal Signal STH-10 siren on their fire department. I don't know if they use it or not, but I will find out.

Here's a picture of the Whelen in Portland.

So, yesterday (3/22/15) I asked my aunt about some sirens she heard during a tornado. The location was Rockford, Illinois. I showed her some videos and she said the one she heard was a 9/12 ACA Allertor or maybe a P-10 or P-15. Can anyone give me some info on Rockford's old system? (It is composed o...