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.

2025年3月21日 · 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.

2020年1月4日 · Monthly tornado siren test of Cleveland County's warning siren system. This siren is tested at the first Saturday of every month at 12:00 PM ET. This siren is a 3 phase model (3T22A). I met up with...

Recorded on Saturday, January 29, 2022. This is a re-recording of the Laurens County - Hickory Tavern Fire Department 3T22B (single phase model). This siren is tested every Saturday at 12:00 PM,...

Federal 3T22 The Federal 2T22 siren is a dual tone siren, which is essentially one siren on top of another siren with the siren motor in the middle. Federal added air valves to each air intake of the top and bottom parts of the 2T22 siren to make it possible to alternately (or simultaneously) shut off the air to each air intake of the siren.

2015年5月2日 · This is the monthly test of the 3T22 located at the north end of Resco Dr. at the NS tracks in Clyde, OH. I don't know what is causing this thing to be this...

The Federal Thunderbolt 1003 and 3T22 are capable of coding the "Fire" signal using air valves to alternately cycle on and off the air flow through the high and low tones of their dual tone rotors. The 3T22 used air valving on the air intakes of the upper and lower siren rotors.

2020年2月4日 · 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. They're quite large assembled, but with the horns removed they're a lot more manageable, if tall.

The Federal Signal 3T22 / 2T22 was an outdoor warning siren made by Federal Signal Corporation (formerly Federal Sign and Signal Corporation) from 1952 through the early 1990s. It has a very recognizable design, having a ten-port rotor (chopper) on the bottom with ten cones (horns) and a 12-port one on top with twelve cones.

2007年8月12日 · Our 2t22A has the FS logo, which I believe came into existance in the mid 1970s.