What town did you live in that you heard the 10/12 port one? The only one known that is 10/12 is the one in Dudee MI never found a 10/12 anywhere else yet The only other 10/12 port 500AT I have ever seen, is on Indiana State Route 9, south of Greenfield, which is located in Hancock County. These si...

Don't forget Dundee's 10/12 port Federal 500AT I love that sound it makes Growing up in Dundee, I can remember the day that siren was installed in back of the fire station in the early spring of 1970. Prior to that time, there was a large Sterling vertical siren mounted on top of the fire station. ...

The official policy in my county, is that if a large tornado is confirmed on the ground, the sirens will be cycled every 10 minutes. The signal used is a three-minute steady, continuous blast. Conversely, many local communities in the past, used a 3-5 minute wavering (Attack Warning) signal for torn...

In a conversation that I had with Greg Alcorn, at Federal Warning Systems, he said that finding replacement parts for the STH-10 is next to nil. I was really saddened to hear this news, but with the debut of the Eclipse series, the STH-10's days were numbered. I really loved this model very much. If...

Well according to the Federal Warning Systems website the STH10 is gone forever now. 1965-2006 I believe. It was a good siren. At least I got one while they were cheap. Just thought I'd post the news. According to Dan Bierovic, the STH-10 dates back to around 1949-1950. The city of Ann Arbor, Michi...

Hello everyone: This is my first post here, and I would like to say hello to all you fellow siren enthusiasts. Ironically, this video is a fake! I recorded that Federal 500AT, which is located in back of the Dundee Twp. Fire Dept, here in Michigan. Trust me, that siren is not in Edmonton. Moreover, ...