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2. Federal Signal Corporation - Wikipedia

   en.wikipedia.org/wiki/Federal_Signal_Corporation

   Federal Signal was founded in Chicago, Illinois, as the Federal Electric Company in 1901 by brothers John and James Gilchrist and partner John Goehst, manufacturing and selling store signs lit by incandescent lamps. By 1915, they began manufacturing and selling electrically operated mechanical sirens (such as the Q Siren and

3. 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

4. Forsalebyowner.com - Wikipedia

   en.wikipedia.org/wiki/Forsalebyowner.com

   Forsalebyowner.com is the United States largest "by owner" real estate website. It provides a real estate advertising and information service that charges a flat fee to property owners who advertise their property on the company’s Website. It created a business model that competed directly with traditional real estate firms, connecting buyers ...

5. Illinois tornado siren has not worked for nearly a year ... - AOL

   www.aol.com/news/illinois-tornado-siren-not...

   A few dozen miles from an Amazon warehouse where six people died last year in a tornado, one of Belleville’s sirens has been out months. One resident said she got nearly endless referrals from ...

6. 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 ...

7. Did you hear the sirens go off last night? Here's what caused ...

   www.aol.com/did-hear-sirens-off-last-184304224.html

   Technical issues caused the sirens to go off in some western suburbs including, Grimes, Urbandale, Waukee and West Des Moines around 9 p.m. Sunday, according to an official with the Polk County ...

8. 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 ...

9. Why is the tornado siren going off? What to know about ... - AOL

   www.aol.com/why-tornado-siren-going-off...

   An EF0 is the lowest rating, based on estimated wind speeds and related damage, on the 0-5 scale used to assign a tornado a rating, according to the NWS. These wind speeds can break branches from ...