An article about the Field Building Siren:

http://archives.chicagotribune.com/1951 ... lding#text

Aye now, Whelen makes a good omni. I'm thinking they may be going with I-Forces. The 3200 watt version just got some serious attention according to a post on their Facebook page. https://www.facebook.com/AmericanSignalCorporation Interesting stuff. Looks like the drivers are Atlas Sound K-100N, whi...

The 2T22 and Thunderbeam sirens would best be replaced by Eclipse 8's/T-121s. The Thunderbolt would best be replaced by a 508 Siren or a T-128. Then they can reuse the existing electrical connections.

Brendan W wrote:

"Sound comes out here!"

"Oh. I was wondering."

Clearly this unit was built before any die casting tooling was done for things like the rotor cap and the chopper housing. What you see here is welded steel, standard hot-rolled shapes, and standard plumbing fittings, and the walls of the chopper are formed by steel pipe and two end plates with tens...

Now somebody who owns a restored Chrysler siren needs to put a large CD insignia on the side like the one in Portland.

Doggone it! I'm just up the road in Dayton, but I'll be out of town that weekend.

Well, gee, I didn't expect all this to happen in the space of a day. I don't agree this thread should be closed as long as ArrowShooter1003 has learnt his lesson (that forum moderation is best left to those with that title), since things should be able to progress normally from here on. I asked a qu...

Hello Logan,

What is the diameter of the horn mouth (the large end)?

Thanks!

Franklin, OH (south of Dayton) replaced its remaining two 1000Ts with 508s within the past couple of months. I've seen/heard the 1000Ts run this year, but the last time I drove past one of them, the old siren and pole were gone and a new 508 was on a new pole installed in the same hole in the ground...