A lot of the Fairfield County sirens originally came from Lake County, OH. That's about all I know.

Which one?? there were two near campus.
One was over by Blankenship hall at at the building they have the excess inventory sales.
The other one was over near 10th street behind an apartment complex I think.

The one on 10th/College Rd. S

The one near campus isn't there??

If anyone knows of old T-Bolt or other siren locations I'm still interested in putting a map together of the Franklin County CD system prior to the Whelens being installed in the early '80s. I have about 25 locations mostly westside and northside.

Does anyone else find that the voice feature sounds better (more audible) on an omnidirectional siren as opposed to a siren that rotates?

According to this small article : https://www.powersonix.com/helicopter.php They exist. In short, this article pretty much supports the brand and model, (Power Sonix's helicopter-mounted speakers). Earlier in the article, Kev (the consumer), rants about how their old speakers sounded horrid and how...

In many films such as Close Encounters of the Third Kind or Invasion U.S.A. , Hollywood portrays helicopter mounted P.A. systems as reality. Do such things exist? Seems like a work of fiction as the noise of a helicopter would likely drown out any helicopter mounted voice capable P.A. plus the added...

If anyone is aware of the 4004 near the intersection of McKinley and Trabue Roads near Hilliard, this siren recently got moved about 800 feet north of its old location, to make room for new apartments. Also probably because it was really close to the apartments there already. I went by there the ot...

Great find. The class 615 must also include T-Bolts since we know Tampa had that model although I wasn't sure all the sirens were T-Bolts. I did not know Hillsborough County also had sirens I'm assuming these were operated by fire districts at the time.

That one has actually been there for about 20 years now as it has a digital ESC-864 controller. Here's a video of it: https://www.youtube.com/watch?v=IAqrVSG-rZs Maybe it was moved? It's not there on StreetView in Aug. 2019 Oh it's there alright. It's just harder to see in the newer StreetView imag...

Franklin County has been installing brand new 4004s. One went up this summer at the corner of Trabue Rd. and McKinley Ave. That one has actually been there for about 20 years now as it has a digital ESC-864 controller. Here's a video of it: https://www.youtube.com/watch?v=IAqrVSG-rZs Maybe it was m...