enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Civil defense siren - Wikipedia

   en.wikipedia.org/wiki/Civil_defense_siren

   These sirens, mostly built by Carter, Gents, Castle Castings, and Secomak (now Klaxon Signal Co.), have 10 and 12 ports to create a minor third interval (B ♭ and D ♭ notes) and are probably the world's most recognised World War II air raid siren sound. Recordings of British sirens are often dubbed into movies set in countries which never ...

3. ATI HPSS - Wikipedia

   en.wikipedia.org/wiki/ATI_HPSS

   San Francisco, California - This system is unique featuring the sound of the decommissioned Federal Signal STL-10 sirens that the HPSS units replaced; Casitas Dam, Ventura, California - This system is unique as they look like the Federal Signal Directional Speaker Array (DSA) sirens, but can have 7–8 speakers per stack, and gray caps on the speaker cones.

4. Siren (alarm) - Wikipedia

   en.wikipedia.org/wiki/Siren_(alarm)

   In a pneumatic siren, the stator is the part which cuts off and reopens air as rotating blades of a chopper move past the port holes of the stator, generating sound. The pitch of the siren's sound is a function of the speed of the rotor and the number of holes in the stator. A siren with only one row of ports is called a single tone siren.

5. List of civil defense sirens - Wikipedia

   en.wikipedia.org/wiki/List_of_civil_defense_sirens

   Download QR code; Print/export ... Chrysler Air-Raid Siren; Sentry Siren; SiraTone This page was last edited on 5 August ...

6. Federal Signal 3T22 - Wikipedia

   en.wikipedia.org/wiki/Federal_Signal_3T22

   A 3T22A is three phase, while a 3T22B is single phase. The siren was mainly used for air raid warnings during the Cold War era and weather warnings after the war. In the early 1990s, the siren's production was stopped when it was replaced with the newer 2001-SRN, which can reach 126db (also measured 100 feet away), hence the name.

7. Booms and sirens in Israel after Iran launches over 200 ...

   www.aol.com/news/video-shows-raid-ship-near...

   Booms and air raid sirens sounded across Israel early Sunday after Iran launched hundreds of drones, ballistic missiles and cruise missiles in an unprecedented revenge mission that pushed the ...

8. Sirens sound, streets deserted as Taiwan simulates Chinese ...

   www.aol.com/news/sirens-sound-streets-deserted...

   Sirens rang out, roads emptied and people were ordered to stay indoors in Taiwan's capital Taipei on Tuesday during an annual air-raid exercise simulating a Chinese missile attack. Sirens sounded ...

9. Irishman Posts From Bomb Shelter in Lviv as Air Raid Siren Sounds

   www.aol.com/news/irishman-posts-bomb-shelter...

   An Irish national posted video from a bomb shelter in Lviv, Ukraine, on May 3, as strikes and explosions were reported in the area.Joby Redmond told Storyful that, though he is a costume designer ...