I received my newest addition to my collection Tuesday, a Federal Signal Corporation 2001-SRN/DC "roundback". Newest addition and collection, my God, those are two words I never thought i would be saying. The only siren I wanted was a Thunderbolt because of my memory of them when I was a child. Do to the enormous size of these sirens I never ever thought I would have more than one. Well I guess im infected with this siren collecting disease now and I have found ways to get more.
The siren is in good condition. There is no corrosion on the rotor and stator. There is minor surface rust in places on the upper rotating section. Federal apparently doesn't galvanize their steel sheet metal parts any more. That must be why they have such a rust problem on their newer sirens. The rotator box is perfect with no rust, but the upper cover box is starting to rust. There is no evidence of the upper box being galvanized.
Anyway, here are the pictures: http://www.flickr.com/photos/58979889@N06/