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.
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
March:
St. Patrick’s Day
April:
Earth Day
June:
Support for Orlando
Chicago Pride Parade
November:
Veterans Day
December:
Holidays
February:
Go Red! American Heart Association
Valentine's Day
March:
Chicago Red Cross
April:
NFL Draft
May:
Memorial Day
June:
Support for Orlando
Chicago Pride Parade
July:
Fourth of July
September:
Stand Up To Cancer
Lymphoma Research Foundation
December:
Holidays
January:
Blue Light for Peace
Martin Luther King Jr. Day
April:
Autism Awareness
Earth Day
NFL Draft
May:
Memorial Day
Police Officer Memorial
June:
Support for Orlando
Chicago Pride Parade
Father's Day
July:
Fourth of July
August:
First Bears Preseason Home Game
September:
First Regular Season Bears Game
The Chicago Police Memorial Foundation
National Ovarian Cancer Coalition
October:
Chicago Cubs Playoffs
November:
Illini Day in Chicago
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
June:
Support for Orlando
Chicago Pride Parade
October:
Domestic Violence Awareness
October:
Lynn Sage Breast Cancer Awareness