WBBM-AM
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| City | Chicago, Illinois, United States |
|---|---|
| Broadcast area | Chicago metropolitan area |
| Branding | "Newsradio 780 and 105.9 FM" |
| Slogan | "All news. All day. All night." |
| Frequency | 780 kHz (also on HD Radio) |
| First air date | February 6, 1924 (in Lincoln, Illinois; moved to Chicago in 1925) |
| Format | All News |
| Language(s) | English |
| Power | 50,000 watts |
| Class | A (Clear channel) |
| Facility ID | 9631 |
| Transmitter coordinates |
41°59′26″N 88°1′40″W / 41.99056°N 88.02778°W (main antenna) 41°59′23″N 88°1′44″W / 41.98972°N 88.02889°W (auxiliary antenna) |
| Callsign meaning |
World's Best Battery Maker (referring to Mallory Battery Company) We Broadcast Better Music (from a past slogan) World's Best Broadcast Medium |
| Former frequencies | 1330 AM (1924–1926) 770 AM (1926–1941) |
| Affiliations |
CBS Radio Network (which also includes CBS News), Bloomberg Radio, WBBM-TV |
| Owner |
Entercom (CBS Radio East Inc.) |
| Sister stations | WBBM-FM, WCFS-FM, WJMK-FM, WSCR, WUSN, WXRT |
| Webcast | Listen Live |
| Website | wbbmnewsradio.com |
WBBM, 780 AM, is an all-news radio station located in Chicago, Illinois, United States. The station is owned by Entercom. The station's studios are located at Two Prudential Plaza in the Loop neighborhood, and its transmitter is located in Itasca. WBBM is a Class A station which broadcasts on a clear-channel AM frequency. Its daytime signal provides at least grade B coverage to large portions of Illinois, Wisconsin, Iowa, Michigan and Indiana and has been heard as far south as Cincinnati during the day, and city-grade coverage as far north as Milwaukee. At night, it covers much of the eastern half of North America, but is strongest in the Midwest.
Since August 1, 2011, much of WBBM's programming has been simulcast over sister station WCFS-FM (105.9). The FM station's call letters were retained and should not be confused with 96.3 WBBM-FM, a CHR/Top 40 station; WCFS's former adult contemporary format was retained in an automated form over its 105.9 HD2 subchannel. WBBM's format is available both in AM and FM with HD Radio.
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