The Siren Board

Here are 2 more videos of the Farmland siren...


https://www.youtube.com/watch?v=OTVenH-qFq4


https://www.youtube.com/watch?v=E8xJgJM3U6Q

Then there is this guy in Mount Union, PA. Sounds like only one rotor is working, and very underpowered at that.


https://www.youtube.com/watch?v=NzdqKp0BWLA

The Mount Union siren isn't underpowered. Its motor is healthy 3 phase. It seems like it only has 6 ports.

If this is any value. I happened to come across this image on Google images while looking at 2001 pictures:
Not mine, I give credit to the original owner.