Model 2T has a 4/5 ratio as well and the Federal Model 76/77/78 dual tone fire truck siren has a 9/8 ratio.

Well, I finally found what I'm looking for. The guys at Precision Timer ( http://www.precisiontimer.com ) have both a solid state flasher and a mechanical flasher. Unlike most other companies I've ran across, they don't have a minimum order and will sell to the public and take credit cards. (yay!) A...

Yea, there should be a screw holding the rotor on, but I'm referring to the whole rotor being screwed (as a whole) onto the shaft. That, I've never seen. Do the torch method last. If you do my hammer trick, hit the shaft, NOT the rotor. It should pop right out.

trafficsignals4ever wrote:Speaking of breakers, does anybody know what to do about a 60 amp siren on a normal 110V oulet?

What do you mean? No electrical appliance on 120VAC is supposed to draw over 30 amps. That much power you haver to step up to 240VAC.

Nope, the shaft actually has a single thread running down it. Mine did, I didn't save the motor, but if you want to, just twist the rotor off. I forgot which way it went, but it should go. Are you saying yours screwed on? I've owned two different Model A's and one model L and thats how I got mine o...

Joe, is this a Decot?

http://www.youtube.com/profile?user=nmfd72

Just unscrew the shaft screw, remove the motor out of the housing and take off the horns, and "dangle" the rotor between some books or the like and gently tap the shaft with a hammer. Thats how I got mine out if I remember correctly. I'd be careful about a torch though, it would be easy to...

I have a couple of questions about the electronic Alertonic siren. 1. Was it the first electronic air raid siren ever made in the US? 2. Did it come out before or after the electronic Whelen sirens? 3. Could you talk through it? 4. When did production begin and end? 5. Any pros or cons between the ...

Yea, I've read about those. The only thing with Adam's is that his was powered with a 9v battery and uses low voltage. I'm being picky and want to use something mechanical. If I'm going the solid state way, I might as well pick up this $35 adjustable 120VAC flasher: http://www.trafficlights.com/imag...

Cool, calm, quiet nights will let sound propagate far. I've hear my hometown's model 3 many miles away before under certain conditions. Must have been a big fire somewhere for all of those sirens to be going off!