I recorded an ambience of the siren test in Mandan, ND yesterday of both the city’s 2001-130 sirens and the refinery’s Whelen WPS-2900 series sirens.
They aren’t the best recordings, as I literally just stuck my phone in an open window, and iPhones don’t have the greatest microphones. I had to boost the audio by a lot in editing to get it to sound comparable to what it is like in person. It’s still not as loud as it should be, but there was getting to be too much background noise. Hopefully in the future I can get a better microphone and placement, but I’d say that my first ever attempt at recording a siren was successful, considering that I actually got a recording of both systems functioning properly.
Here is the city’s system. The recording location was just over half a mile from the two sirens that you can mainly hear. They always do a full alert and test on the last Friday of the month at 9:30 AM.
Here is the Refinery system. The recording location was around 1 mile from the plant. They have a bunch of WPS-2900 sirens of various sizes. They also have some WS-2000 sirens that are either inactive or are running on digital controllers, as I’ve never heard an analog siren from there. They test High-low, wail, and alert for around 10 seconds each and a voice message every Friday at 11:00 AM. I’m hoping to get a much better microphone and/or get closer at some point to actually hear what the voice message says.