KOEN
Chicago Harbor Light in the middle, with the lights within 20 km, in their listed colours.
Chicago Harbor Light — light characteristic, height, range
One red flash every 5 seconds
Count 5 seconds.Flash red, once.Begin again.
- Characteristic
- Fl R 5s
- Height
- 82 ft · 25 m
- Nominal range
- 15 mi = 24 km
- Structure
- White conical tower.
- Remarks
- HORN operates by keying the microphone five times on VHF-FM channel 83A. 2 blasts ev 30s (2s bl).
- Position
- 41.8894°N, 87.5905°W · IL

Lights nearby
- Chicago Harbor Entrance South Side LightOne green flash every 4 seconds · 210 m
- Chicago Harbor Navy Pier South LightWhite, 2 s on and 2 s off · 703 m
- Chicago Harbor Navy Pier North LightWhite, 2 s on and 2 s off · 738 m
- Chicago Harbor Municipal Pier No. 1 LightOne yellow flash every 2.5 seconds · 762 m
- Chicago Navy Pier Marina Light 1One green flash every 4 seconds · 946 m
- Chicago Navy Pier Marina Lighted Buoy 2One red flash every 2.5 seconds · 969 m
- Chicago Navy Pier Marina Lighted Wave Attenuator 2One yellow flash every 4 seconds · 973 m
- Chicago Navy Pier Marina Lighted Wave Attenuator 2One yellow flash every 4 seconds · 989 m
Not for navigation. Use official NOAA charts and USCG Local Notices to Mariners.
Real periods; the phase is reconstructed from a fixed clock (real lights don't keep time with each other).
Sources: U.S. Coast Guard Light List (opens in a new tab) · Checked