No, There are several other signals they could do besides just these 4. They ware called that because those were the three signals FS had in mind when they were built.

There's a model 5 in Stony Point NY. I had no idea that it tested so I was at a nearby church. I was setting up to record the bells at noon on new years there when out of nowhere I heard the siren wind up. It only ran for 5 seconds and I didn't press record in time. Still got a good recording of the...

Kishiwada only has 14 notes in use. It could have more but only 14 are audible.

It could be possible in theory. In practice it's quite difficult and definitely not recommended.
Also, it's nice to see you again.

Federal Signal Model 5/7.

Same here. Images don't load

Quick bump: The Iga City Hall music siren is now protected as a "Tangible Cultural Property." Unfortunately, this article is behind a paywall so I can't read it. I guess this means it's a historic site like the NRHP here in the United States. Link:https://www.chunichi.co.jp/article/874045?...

NEW LOCATIONS FOR DUPONT/KRATON PLANTS: 2001-DC https://www.google.com/maps/@39.2780459,-81.5933985,15z?entry=ttu Mounted next to a 40v2t. 1st Saturday every month 3 minute alert 2001-DC https://www.google.com/maps/place//@39.2722261,-81.570275,19z?entry=ttu 1st Saturday every month 3 minute alert 2...

The Cyclone 120

Fictional locations.