The Siren Board

http://www.youtube.com/watch?v=Wt_iVwqChEI

Sorry it took so long, the internet was acting up, and Comcast was in the area working on it

Two Questions and one Observation (which I'll bet is wrong):

Q1: Approximately how far away were you from the T135? My understanding is that one of these bad boys can be heard from *at least* 10 miles away. (We have none of these here in relatively tornado-free New York State.)

Q2: Am I right in guessing a T128 for the other siren?

O: With a bit of careful listening, I could've sworn that this was a Cyclone. The *barely* audible spin-up and the more easily discernible wind-down sounded quite sudden for a T135.
Far be it from me to say you're wrong in what you've ID'd. I'm just a bit stunned that a T135 can spin up and down so quickly.

Excellent clip. Would there be any way you can shoot me a simple audio file of it?

*Edit*: It has to be a T135 because of the shifts in volume from the siren; and only a rotating model can create that impression in a recording. On the other hand, Cyclone C-125's, which sound just like T135's, are omnidirectional like, say, a Federal STH-10.

its definitely a T-135.

Answer 1) I am 2 miles away from it

Answer 2) I'm not sure...

And 3) Yeah it's a T-135, I go past it all the time

Thanks all.

Given that it is a T135, the motor it's running on must be hella powerful. I've heard other T135 recordings that are decidedly slower both on startup and coastdown; and I would imagine that the standard motor used to power one of these is already fairly hefty.

Apologies for my vague terminology, as I'm not an electronics buff.

The main motor is rated at fifty horsepower. It winds up slower because it is a three-phase motor; it winds down slowly because the rotor is around twenty inches in terms of the diameter, it is quite heavy.

what town was this in?

N/A

Brendan Ahern wrote:what town was this in?

Bartlett, Illinois

Anyone who wants an audio clip can


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