My Federal Electric Model A Siren Test, Double Growl & Alert - 3/4/15

[TrainsAndSirens1]

https://www.youtube.com/watch?v=8PsL_gBuxew

Sorry for a late post.
Video taken on March 4, 2015. It has been a while since I last time videoed this siren. And I never test this siren because it's high pitched. I was not meaning to do a double growl, I was trying to do a single growl. This siren was placed on a towel because is to prevent this siren from moving/vibrating when it's being tested. This siren is a 1946(?) 110V AC/DC Federal Electric Type A. The sirens you can hear in the background in this video is my 24V green Model D and my Model 2.