The Siren Board

http://youtube.com/watch?v=of5eAbAgHgM

This Thunderbolt reminds me a whole lot of the sick Trunnel Thunderbolt. It sounds like it either badly needs new brushes, or it may have dirty slip rings. Listen to how it hesitates each time it winds up. It may also have a broken rotator.

For a moment I nearly mistook that siren tone as a non-thunderbolt siren. However, after listening to it - it needs some work done. Rotor seems to be broken too. Had absolutely no sound fading.

I couldn't tell what siren model it was until it wound down for the first time, then, I could tell that it was a single tone Thunderbolt. It's the single tone version of the Trunnel Thunderbolt! This one sounds like it's set to a higher chopper level than that one though.