CONFUSION ELEMINATOR: The odd sound: This siren uses a 4/5 port chopper, while most others use a 5/6 port chopper. The fast spinning: The thunderbolt can rotate at 2, 4, or 8 RPM (Revolutions Per Minute,) and this one is set to 8. The long wind-down: There's a time delay (Agastat) in the RCM1 control box. This changes how long the rotator and blower (the supercharger) will wait before turning off when the chopper (the actual siren part) is turned off. Without this, the wind-down would not be able to be heard from far distances. The Agastat in this siren seems to be set for too long or broken. The odd attack timing: The attack signal is controlled by wooden cams that press buttons. If wanted, a custom timed weel could (probably) be made, and there's a small chance that this siren has a custom attack timing wheel.
Hey Nick Rusche, Awesome😎 Ambiance I Can Hear American Signal T-128 And Federal Signal Thunderbolt 1000T. Also, In Street View That Federal Signal Thunderbolt 1000T At Green Township Senior Center Replaced With American Signal T-128
