All Sentry/Sterling sirens have directional rotors, and their SPL falls through the floor running in reverse. When Sirens for Cities installed the 40V in Huntsville they initially wired it in reverse. The EMA's communications director took a video of it and one after they swapped the phases, and the different in SPL was apparent enough that you could tell through the audio. I've seen the rotor of a 7V8-B in person and it's basically built like a longer version of the 8 port Model 5's With the vanes shifted to make it directional. The 2V8s were also directional.
I was unaware that Sentrys could be reverse wired
14Vs at least have directional rotors like an ACA
All Sentry/Sterling sirens have directional rotors, and their SPL falls through the floor running in reverse. When Sirens for Cities installed the 40V in Huntsville they initially wired it in reverse. The EMA's communications director took a video of it and one after they swapped the phases, and the different in SPL was apparent enough that you could tell through the audio. I've seen the rotor of a 7V8-B in person and it's basically built like a longer version of the 8 port Model 5's With the vanes shifted to make it directional. The 2V8s were also directional.
Must be the wind
It was.
It looks like is doing ambulance
how far away was this?
About a thousand feet.
Does Corsicana still run their 2t22’s? I was there a few weeks ago and saw them and wondered if they still run
Yes
@@TheSirenSeeker cool thanks
How far away was it from you?
~1200ft