this post was submitted on 11 Apr 2025
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[–] [email protected] 19 points 2 days ago (2 children)

Bit of a rant about my city's system: Our sirens are tested weekly on Mondays, since we live around a lot of chemical and petro plants that can release some nasty stuff if something goes wrong. Haven't had any serious warnings since I moved here years ago, but the sirens themselves can't exactly be relied on either.

Problem is, our system consists of "High Power Speaker Station" (HPSS-32) sirens made by a company called ATI Systems. Holy fuck these sirens are garbage. Speakers manufactured in China that leak rainwater inside and short out the drivers, controllers that completely lack redundancy if one or both of the amplifiers fail, which renders it only half as loud or entirely silent. ATI refuses to support older hardware and forces the city to buy new controllers when the old ones die within a decade, causing the maintenance costs to outweigh having just gone with a less scummy manufacturer.

ATI itself is a horrible company that basically suckers cities into buying their junk by undercutting legitimate manufacturers, then leaves cities hanging when their sirens start rapidly failing. San Francisco recently had to remove their entire system of HPSS16 and HPSS32 units because the system kept failing and had a ton of security vulnerabilities. The system didn't even last two decades, yet the Cold War era STL-10 mechanical sirens they replaced had served the city without issue for half a century.

So yeah, I don't exactly feel safe with our current system. If your city has ATI sirens, don't count on them in an emergency and get a weather radio instead.

[–] [email protected] 5 points 2 days ago (3 children)

I have never met someone so passionate about a siren before

[–] [email protected] 7 points 2 days ago

I have some Greeks I’d like to introduce you to.

[–] [email protected] 4 points 2 days ago (1 children)

There's a whole community of siren enthusiasts like myself, there's thousands of us. Sirens are really neat machines that have a ton of interesting history and unique models. It's a niche hobby for sure, but I have no shame in sharing it.

[–] [email protected] 2 points 1 day ago

I was super into sirens myself for a while. After they killed my third boat crew, I had to move on to another hobby.

[–] [email protected] 4 points 2 days ago

There are some really interesting YouTube channels about different types of sirens.

[–] [email protected] 2 points 2 days ago (2 children)

Bro there's a Canadian guy on Youtube who built a loud-ass siren out of plywood in his garage. No speakers. No fancy electronics. Just a motor and some wood. These do not need to be complex things.

[–] [email protected] 1 points 2 days ago (1 children)
[–] [email protected] 2 points 2 days ago

https://youtu.be/2Tr6hCZAVhI

There's a few others who have done the same on YT as well.

[–] [email protected] 1 points 2 days ago* (last edited 2 days ago)

Exactly. A basic electric mechanical siren just consists of a motor, a centrifugal fan called a chopper, and a stator to chop the air as the rotor spins. It can't get any simpler than that. There are tons of mechanical sirens from the 1920s and 30s that are still in service today because of how basic and easy to maintain they are!