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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. Federal Signal 3T22 - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_3T22

    The Federal Signal 3T22 was originally designed as the 2T22 in 1952 or 1954. The 2T22 has the same number of ports and cones. It can produce two main signals (it can produce more but the other signals are rarely used), hence the name "2T22" (the 2 at front representing the 2 choppers, and the 22 representing the amount of horns).

  4. List of sirens built by Alerting Communicators of America

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

    This siren is similar to Federal Signal's Thunderbolt series. Only a single unit remains in service in Milwaukee, WI. Screamers Electro-Mechanical 2, 5, 7.5, 10 8, 9, 9/12, 10/12 1968–1994 Omni Directional 102–115 dB at 100 ft. Series of small vertical sirens, comparable to Federal Signal Corporation's vertical sirens. Sentry 95

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

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

    Rebecca Owens, director of the Richland County Emergency Management Agency, says the county's 44 tornado sirens will be upgraded under a new contract with Vasu Communications.

  6. New tornado siren to be placed in area where it will serve ...

    www.aol.com/tornado-siren-placed-area-where...

    Ashland County commissioners gave their OK to replace the tornado siren located near Dale-Roy School at a cost of about $33,000. Homeland Security and EMA Director Anne Strouth gave an update on ...

  7. Tornado siren to move to water tower at Brookside Park - here ...

    www.aol.com/tornado-siren-move-water-tower...

    Commissioners accepted a quote from VASU Communications in the amount of $28,370.07 for the removal of the tornado siren at Edison School and the purchase and installation of a new tornado siren ...

  8. Siren (alarm) - Wikipedia

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

    Sirens are used on emergency service vehicles such as ambulances, police cars, and fire engines. Many fire sirens (used for summoning volunteer firefighters) serve double duty as tornado or civil defense sirens, alerting an entire community of impending danger. Most fire sirens are either mounted on the roof of a fire station or on a pole next ...

  9. 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.