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  2. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    The Modulators in Chicago's siren system formerly used to run on the Alternate Wail tone during tornado warnings in order to vary from emergency vehicle sirens. However, in O'Hare International Airport, instead of using the main UV Wail or Attack, they use an Eclipse 8 (possibly) sound card doing attack. Before that is the Westminster Chimes ...

  3. List of sirens built by Alerting Communicators of America

    en.wikipedia.org/wiki/List_of_sirens_built_by...

    Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95 Electro-Mechanical 1 5/6 Sometime around the late 60s/early 70s. Omni Directional 95 dB at 100 ft. Very rare siren. Dual tone circular port siren. 95 dB at 100 ft. Manufactured by Klaxon, sold in USA under ACA name.

  4. 2000 Xenia tornado - Wikipedia

    en.wikipedia.org/wiki/2000_Xenia_tornado

    When the 2000 tornado hit the town, only one of these sirens would be functional; the tornado had cut power to four of the sirens. [8] An assessment conducted after the tornado concluded that authorities in Xenia had failed to activate the sirens within time, and as a result only one was sounded. [ 6 ]

  5. Richland County to spent nearly $194,000 to upgrade tornado ...

    www.aol.com/richland-county-spent-nearly-194...

    Vasu Communications will upgrade controls for the county's 44 tornado warning sirens. American Rescue Plan Act dollars will pay for the project. Richland County to spent nearly $194,000 to upgrade ...

  6. February Tornado Threat Is Usually Highest In The South ...

    www.aol.com/news/february-tornado-threat-usually...

    One of these tracked 122 miles across Arkansas, the longest tornado path of record in that state. A Feb. 21-22, 1971 outbreak claimed 121 lives from Texas to North Carolina, the deadliest February ...

  7. Tennessee tornado sirens failed to sound in storm that ... - AOL

    www.aol.com/tennessee-tornado-sirens-failed...

    It’s not the first time the state’s tornado siren system hasn’t worked properly. In 2019, a drop in radio signal caused Nashville’s tornado warning system to repeat a siren cycle.

  8. 2011 Ringgold–Apison tornado - Wikipedia

    en.wikipedia.org/wiki/2011_Ringgold–Apison_tornado

    The tornado, which was on the ground for 52 minutes and became known as the Ringgold–Apison tornado or The Monster, [1] killed over twenty people while having windspeeds that were estimated to have been as high as 190 miles per hour (310 km/h). The tornado was part of the largest outbreak of tornadoes in recorded history, and was the ...

  9. Does Knoxville have tornado sirens? - AOL

    www.aol.com/does-knoxville-tornado-sirens...

    Sirens typically cost between $30,000 and $50,000 each to install, Ickes said. The total cost in Knox County would likely be somewhere between $6 million and $12 million initially, plus ongoing ...