Some related reading: https://www.airraidsirens.net/forums/viewtopic.php?t=26999 Source: https://news.ycombinator.com/context?id=46155475

I was planning on making a miniature model of the Yamaha sirens, so am interested to see that people have already made models. However I think that until/unless I get stumped I will ignore these and make my own, just for fun.

A blog post about sirens. What they are, how they work, and where to go if you want to hear them.