A BEACON FOR THE WORLD TO SEE

SHINING BRIGHT IN THE NIGHT SKY, THE WILLIS TOWER ANTENNA ARE A GUIDING LIGHT, WELCOMING VISITORS

 

At the very top of the building are antennas with airline warning strobe lights that flash 40 times a minute. Visible to pilots over great distances, the lamps are changed about every 18 months by a climber who scales the antenna towers. New digital antennas were recently installed for Chicago’s major television stations so they can broadcast high-definition TV.

ANTENNA FACTS

  • West antenna tower height = 294'-5" (from 109 roof level to top of strobe light)
  • East Antenna tower height = 290'-7" (from 109 roof level to top of strobe light)
  • Tower Bases = 12' diameter solid wall steel cylinders

GREEN

MARCH: St. Patrick’s Day
APRIL: Earth Day
JUNE: Chicago Pride Festival
NOVEMBER: Veterans Day
DECEMBER: Holidays

RED

JANUARY:  Lurie Children’s Hospital
FEBRUARY: Go Red! American Heart Association, Valentine's Day
MARCH: Chicago Red Cross, Red Nose Day USA
MAY: Memorial Day
JUNE: Chicago Pride Parade
JULY: Independence Day
SEPTEMBER: Stand Up To Cancer, Lymphoma Research Foundation
NOVEMBER:  American Diabetes Association
DECEMBER: Holidays

BLUE

APRIL: Autism Awareness, Earth Day
MAY: Memorial Day, Chicago Police Memorial Foundation
JUNE: Chicago Pride Festival, Father's Day
JULY: Independence Day
AUGUST: First Bears Preseason Home Game
SEPTEMBER: First Regular Season Bears Game, Chicago Police Memorial Foundation

YELLOW

MARCH: National Multiple Sclerosis Awareness Month
AUGUST: First Bears Preseason Home Game
SEPTEMBER: Stand Up To Cancer, First Regular Season Bears Home Game
OCTOBER: Halloween
NOVEMBER: Illini Day in Chicago

PURPLE

JUNE: Chicago Pride Festival
OCTOBER: Domestic Violence Awareness
NOVEMBER:  Pancreatic Cancer Awareness, March of Dimes

PINK

MAY:  Mother’s Day, National Women’s Lung Health Week
SEPTEMBER:  National Ovarian Cancer Coalition
OCTOBER: Lynn Sage Breast Cancer Awareness
NOVEMBER:  Alzheimer’s Foundation of America

WE’RE SENDING SIGNALS

When you’re watching your favorite shows or listening to the radio on your drive home from work, you might just be picking up a signal from Willis Tower.

For nearly 40 years, Willis Tower has provided broadcasters with industry-leading facilities needed to serve the Chicago television and radio markets and wireless communications services. What’s more, Willis Tower continually adapts and enhances its broadcast infrastructure over time, to accommodate the ever-changing requirements of new technology. In the summer of 2009, Willis Tower completed a full conversion to digital television transmission.

Since its debut, the Willis Tower rooftop broadcast facility has been one of the world’s most prominent, serving the needs of large television and radio stations in addition to low power television stations. The facility also houses specialized microwave transmit and receive facilities and two-way radio transmission systems. All this makes Willis Tower one of the most dense and complex broadcast transmission facilities in the world.

 

ROOFTOP TOWER STRUCTURES – TECHNICAL INFORMATION

  • West antenna tower height = 294'-5"  (from 109 roof level to top of strobe light)
  • East Antenna tower height = 290'-7"  (from 109 roof level to top of strobe light)
  • Tower Bases = 12' diameter solid wall steel cylinders
  • The two main antenna tower structures consist of 80’ tall, 12’ diameter cylindrical steel bases, with open frame triangular tower sections atop each that house various television and FM transmission antennas
  • The very top of each tower houses single channel, small diameter cylindrical television antennas
  • Above the steel tower bases, the tower sections and attached antennas are completely enclosed by cylindrical fiberglass radomes, which protect the equipment
  • In addition to the two main antenna towers, four supplemental monopole towers are mounted at the rooftop’s corners, providing additional mounting space for main and back-up television antennas

 

For leasing information, contact Gary Hess, Vice President of Broadcasting, Vertical Bridge at ghess@verticalbridge.com.