The Siren Board

Posted: **Tue Apr 15, 2014 11:21 am**

Perhaps they realized after 2 minutes the 2001s didn't activate?

Posted: **Tue Apr 15, 2014 8:30 pm**

465hz is my favorite!

Posted: **Mon Apr 21, 2014 1:46 am**

What all hz's do they offer Whelens?

Posted: **Mon Apr 21, 2014 2:18 am**

siren fan wrote:What all hz's do they offer Whelens?

Newer ones run a 560Hz alert. They peak at 560Hz in attack and whoop and around 640Hz in wail. HiLo runs at around 630 and 455Hz, and I think air horn runs at the same just at a really fast frequency.
Here's a good example of a newer one in Mexico being ran in all signals

Posted: **Mon Apr 21, 2014 3:43 am**

Noob question: does the fin serve a purpose?

Posted: **Mon Apr 21, 2014 4:31 am**

Penn State Guy wrote:Noob question: does the fin serve a purpose?

These older Vortexes had a belt driven rotator. I believe that the fin was to help rotate the head if the belt slipped or broke; I seen one in LaGrange Ga blowing around in the wind while we were trying to get to my taekwondo tournament one day. Whelen does have a retrofit rotator that can be used to solve the issue completely.

The Siren Board

Fin-Back Vortex in Mustang, Ok

Re: Fin-Back Vortex in Mustang, Ok

Re: Fin-Back Vortex in Mustang, Ok

Re: Fin-Back Vortex in Mustang, Ok

Re: Fin-Back Vortex in Mustang, Ok

Re: Fin-Back Vortex in Mustang, Ok

Re: Fin-Back Vortex in Mustang, Ok