http://www.youtube.com/watch?v=dByjdhWM ... on%20siren
Well, I have come across a small recording of the sirens doing both signals, this has both wind-ups too! (I missed the first wind-up, on my video)
http://www.bagshotvillage.org.uk/know/siren.wav
Is it me, or does it sound very similar to the 3T22 hi-lo? Just longer pauses between the signals?
Dan.