PugetSoundStormWatch wrote:The Hinkle Railyard in Hermiston, Oregon has two Whelen Vortexes, a Whelen Omnidirectional, and a 20V2T (mounted on a tower). Portland's (OR) Albina Railyard has at least one Whelen Omnidirectional in the southern portion. These are all that I know for around here.

Why??? :eh:

SirenkiD wrote:Because math.
http://www.sengpielaudio.com/calculator-distance.htm

thanks

Not possible. You can get estimated 70 and 60 db ranges on cut sheets (based on flawed math of course). But besides the fact that the range of siren is going to be based on topography, geography, and surrounding buildings, even larger problem is how would you define "max range?" The point...

Hello! I'm trying to collect the max audible distances for sirens.

Mark N wrote:I'm getting confused as to who is who now...

yes, we are so confused... :problem:
Anyway, great job!

Bosie,Id
https://www.google.com/maps/d/edit?mid= ... ew1zcMAW6U

DON'T QUOTE ALL THE PHOTOS!
The white thunderbolt is well, fikin' awesome!

EOWS1212man wrote:The soundclip was also used in the movie "Twister" if I am not mistaken.

It is over used in "Into the Storm". Also its in an episode of "Quantum leap".

holler wrote:It's a single tone Klaxon.

For the most part, agreed. https://www.youtube.com/watch?v=DrUooPLW8JY

I remember reading somewhere that it was a 10 port single tone Klaxon siren on 60 Hz. It peaks at the right pitch for a 10 port siren running around 3400 RPM. Can't be a Model 2; it has the linear wind up of an induction motor vs the Model 2 which has an exponential wind up being driven by a univer...