I removed the 3t22 conversion, it broke and I didn’t like it. It looked weird, I’m gonna build a way better one this summer. I’m still calling it a 3t22 thou...

Mar 21, 2025 · The Model 2T22 and Model 3T22 (2 or 3 Tone, 22 horns/ports) are a pair of dual rotor omnidirectional sirens that were produced by Federal Signal over a span of nearly 40 years. These are some of the most well-known and iconic sirens with a distinctive sound and are still commonly found today.

On this page I try to explain how the Federal 3T22 and Thuderbolt 1003 sirens work. These two sirens are capable of doing and extra "Fire" signal because they can switch their high and low tones off and on by valving the air going through the siren rotor.

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Interesting facts about the 2T22. The 2T22 is an omnidirectional siren that was produced by Federal Signal Corporation from 1955 to 1992. They have two rotors producing two different tones at the same time, powered by a 10hp dual shaft motor.

Aug 8, 2019 · I don't own any sirens myself, but I'd say the 3T22 is one of the cooler sirens out there, being one of the few with coding dampers and capable of hi-lo signals. The 10/12 port ratio also sounds really nice.

Nov 22, 2009 · Some air does pass through, which mutes the tone vs creating a sharp cut off like on the 1003. As heard in Derek's in depth video which has been removed, and in his 3T22 hi-lo and pulse videos, and in Brett Jones' famous 3T22 recording, you can hear a CLINK! when the dampers slam shut.

Nov 5, 2024 · -----INFORMATION-----My InputOH MY GOSH i dont know where to begin with this thing. this is AWESOME and definitely worth the expirence. When the dampers are...

Franklin County Siren TestMadison County Siren TestThe 3t22 Is MadisonThe Fedelcode Is Franklin (and a fire siren)3T22 Failed, it was being worms on and neve...

The Federal Signal 3T22 and 2T22 are dual-tone, mechanical outdoor warning sirens made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation) from 1952 through the early 1990s. Both have a very recognizable design, with a ten-port rotor (chopper) on the bottom with ten cones (horns) and a 12-port one on top with twelve cones.