Today as I went to Lakeville to record the tornado siren it was about 5 minutes after 11:00 the siren did not go off at 11 o’clock so then I called the sheriffs office and they set it off at 11:09 
@@CarmenPalermoStorms yes, Whelen vortexFinback are l controlled by a Whelen ESC digital 864 (465Hz) and regular vortexes are controlled by all sorts Whelen control boxes. But this Whelen In the video is a 450Hz and has a esc2020 control box
