The Model 3, 5 and 7 date back pretty far. I'm not certain on a more precise date, but they definitely reach back to the 1940s, heck maybe even further into the late 30s. The Model 2 is even older.
My knowledge excels on the Federal Thunderbolt siren and SiraTone EOWS sirens. ¯\_(ツ)_/¯
Proud owner of
2014 Federal UltraVoice UVICU
1981 SiraTone C/B prototype
1984 SiraTone C/B
IIRC Model X sirens date back to at least 1929, with the Model 2 being even older than that.
Just a wolf, siren enthusiast and railfan.
Rewrote almost the entire ARS Wiki, former admin of the CDS Wiki
Proud owner of an FS&S Model L, Sterling Type F, and soon a mini FS 500AT!
The Model 3, 5 and 7 date back pretty far. I'm not certain on a more precise date, but they definitely reach back to the 1940s, heck maybe even further into the late 30s. The Model 2 is even older.
iirc Model 2s were produced before 1920s. And are still in production. (Not the 2T.)