The Thunderbolt 1000T with the level 7 chopper voltage setting @ Maunalua bay sounded successfully again on the first working day of the month. This time, recorded with better quality, and closer zooming.
http://www.youtube.com/watch?v=5sTZTm3hFz8
I'll post high-resolution pics in this same thread if a demand for them exists.
I've been talking with someone over at Civil Defense, and I'm hoping to get a full location sheet on each siren here on Oahu. I'll be taking photos of more sirens around the island, and recording others that I don't know where they are located.