Willis Tower in Chicago

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The Willis Tower (formerly named, and still commonly referred to as, the Sears Tower) is a 108-story, 1,451-foot (442 m) skyscraper in Chicago, Illinois. The naming rights are valid for 15 years so it is possible that the building’s name could change again in 2024. The Chicago Tribune joked that the building’s new name reminded them of the oft-repeated "What you talkin' 'bout, Willis?" catchphrase from the 1980s American television sitcom Diff'rent Strokes

Broadcasting

Many broadcast station transmitters are located at the top of the Willis Tower. Each list is ranked by height from the top down. Stations at the same height on the same mast indicate the use of a diplexer into the same shared antenna. Due to its extreme height, FM stations (all class B) are very limited in power output.

Radio stations

East mast
  • 482 m:
    • WLIT FM 93.9 MHz main, 4.0 kW, AMFM
    • WNUA FM 95.5 backup, 3.1 kW, AMFM
  • 480 m: WJMK FM 104.3 main, 4.1 kW, CBS Radio
  • 476 m: WTMX FM 101.9 main, 4.2 kW, Hubbard
  • 474 m: WBBM FM 96.3 main, 4.2 kW, CBS Radio
  • 472 m:
    • WKSC FM 103.5 main, 4.3 kW, AMFM
    • WGCI FM 107.5 main, 3.7 kW, AMFM
  • 470 m: WFMT FM 98.7, 6.0 kW
  • 468 m: WLS FM 94.7 main, 4.4 kW
  • FCC query
West mast
  • 460 & 451 m:
    • WFMT FM 98.7 backups
  • 443 m:
    • WBBM-FM 96.3 backup
    • WJMK FM 104.3 backup
  • unknown: W264BF 100.7 MHz, 2 W, Calvary Chapel of Costa Mesa
  • table of allotments: **WLIT, WLS, WBBM, WTMX, WJMK, WCFS
  • FCC query

Also WB (Weather band)/WX (aka NOAA Weather Radio) transmit off the top of the Willis Tower on frequency 162.550 MHz (Channel 7) known as KWO39. Also equipped with SAME (Specific Area Message Encoding) for text alerts and hazardous weather alarm on weather radios. For weather radio station listing, please visit http://www.nws.noaa.gov/nwr/ for more information.

Television stations

East mast
  • 515 m:
    • WLS-TV 7 analog, 55 kW, Disney-ABC (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
    • WLS-TV 7 permanent digital, 4.75 kW
  • 510 m:
    • WCPX-TV 43 digital, 200 kW, Paxson
    • WCPX-TV 38 analog, 3630 kW, Paxson (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
    • WJYS TV 36 digital, 145 kW, Jovon Broadcasting
    • WCIU-TV 27 digital, 15.1 kW, Weigel Broadcasting
  • 509 m:
    • WXFT-TV 59 temporary digital, 200 kW, Telefutura, Univision Communications
    • WXFT-TV 50 permanent digital, 230 kW, TeleFutura
  • 498 m:
    • WTTW TV 11 analog, 60.3 kW, Window To the World Comm. (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
    • WBBM-TV 12 digital, 8 kW, CBS
  • 480 m:
    • WFLD TV 31 digital backup, 475 kW, Fox TV
    • WPWR-TV 51 digital backup, 508 kW, Fox TV
  • 478 m: WGN-TV 19 digital backup, 310/229 kW, Continental Broadcasting
  • 474 m:
    • WTTW TV 47 digital backup, 150 kW, Window To the World Comm.
    • WLS-TV 52 digital backup, 220 kW, WLS TV
  • unknown: W40BY 40 analog, 37.2 kW, Trinity Broadcasting Network
  • FCC query
West mast
  • 523 m: WPWR-TV 51 digital, 1000 kW, Fox TV
  • 514 m, WLS-TV 52 temporary digital, 153.6 kW, WLS
  • 508 m, WMAQ-TV 29 digital, 350 kW, NBC/Telemundo
  • 494 m:
    • WMAQ-TV 5 analog, 20 kW (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
    • WPWR-TV 50 analog, 5000 kW (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
    • WXFT-TV 60 analog, 5000 kW, TeleFutura (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
  • 475 m: WFLD TV 31 digital, 690/1000 kW, Fox TV
  • 473 m: WCIU-TV 26 analog, 5000 kW (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
  • 472 m:
    • WCIU-TV 27 digital, 590 kW, WCIU-TV
    • WSNS-TV 44 analog 5000 kW, NBC Telemundo (Analog Broadcast discontinued as of June 12, 2009. Now broadcasting only in digital.)
    • WSNS-TV 45 digital 467/665 kW, NBC Telemundo
  • 465 m: WTTW TV 47 digital, 300 kW, Window To the World Comm.
  • 455 m: WJYS TV 36 digital, 50 kW, Jovon Broadcasting
  • 453 m: WGN-TV 19 digital, 645 kW, Continental Broadcasting
  • unknown:
    • WWME-LD 39 digital, 4.4 kW, Ch. 23 Ltd.
    • WEDE-CA 34 analog, 50 kW, First United
    • WMEU-CA 48 analog STA, 150 kW, Weigel Broadcasting
    • WMEU-LD 32 digital, 15 kW
  • FCC query


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See also

  • Architecture of Chicago
  • List of buildings with 100 floors or more
  • List of tallest buildings and structures in the world
  • List of tallest buildings by U.S. state
  • List of tallest buildings in Chicago
  • List of tallest buildings in the United States
  • List of tallest freestanding structures in the world
  • List of tallest towers in the world
  • Sears, Roebuck, and Company Complex

External links



Source en.wikipedia.org/wiki/Willis_Tower