Here is the final video of the ones I shot yesterday of units here in the D/FW area. Dallas has a system of about 150(?) 2001-130's. Their coverage is pretty good, and most places have a decent amount of overlap. This unit is on a peninsula that sticks out in Lake Ray Hubbard. This siren is the eastern most unit in the system, and is really kind of a random unit. For whatever reason Dallas "owns" Ray Hubbard, even though no part of the actual city touches it. The unit goes off for the 90 second attack cycle. At the end you can hear some Whelens in wail that I think belong to the City of Garland's new 22-unit Vortex system. I was discussing this unit with Jeff yesterday, and we believe that Dallas shares activating authority of unit 143 with either Rowlett or Garland.
https://youtu.be/rIPE9HOqOrc
Here is a link to the map so you can see what I am talking about. Unit 143 well east of Dallas.
http://dallascityhall.com/departments/o ... ge-Map.png