Universal Licensing System
WQP427
Chicago Tribune Company, LLC
License details
| ULS identifier | 1833671 |
|---|
| Call sign | WQP427 |
|---|
| Radio service | IG |
|---|
| Status | E |
|---|
| Grant date | 2015-03-07 |
|---|
| Expiration | 2025-03-10 |
|---|
| Cancellation | 2025-05-10 |
|---|
| Frequency range | 451.575 - 469.425 MHz (13 frequencies) |
|---|
| Locations | 6 |
|---|
| Representative location | CHICAGO, COOK, IL |
|---|
| Coordinates | 41.8903056, -87.6233889 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:20:30 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 3 | 1 | FB2 | 451.57500000 | | | 100.000000 | 250.000000 | |
| 3 | 1 | FB2 | 452.40000000 | | | 100.000000 | 250.000000 | |
| 3 | 1 | FB2 | 452.97500000 | | | 100.000000 | 250.000000 | |
| 1 | 1 | FB2 | 453.00000000 | | | 100.000000 | 86.000000 | |
| 2 | 1 | FB2 | 453.00000000 | | | 100.000000 | 250.000000 | |
| 7 | 1 | MO | 456.57500000 | | | 10.000000 | | |
| 7 | 1 | MO | 457.40000000 | | | 10.000000 | | |
| 7 | 1 | MO | 457.97500000 | | | 10.000000 | | |
| 5 | 1 | MO | 458.00000000 | | | 10.000000 | | |
| 6 | 1 | MO | 458.00000000 | | | 10.000000 | | |
| 3 | 1 | FB2 | 462.20000000 | | | 100.000000 | 250.000000 | |
| 3 | 1 | FB2 | 462.45000000 | | | 100.000000 | 250.000000 | |
| 7 | 1 | MO | 467.20000000 | | | 10.000000 | | |
| 7 | 1 | MO | 467.45000000 | | | 10.000000 | | |
| 4 | 1 | MO | 469.42500000 | | | 10.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 3 | 1 | 451.57500000 | | 7K60FXE |
| 3 | 1 | 451.57500000 | | 11K2F3E |
| 3 | 1 | 452.40000000 | | 11K2F3E |
| 3 | 1 | 452.40000000 | | 7K60FXE |
| 3 | 1 | 452.97500000 | | 7K60FXE |
| 3 | 1 | 452.97500000 | | 11K2F3E |
| 1 | 1 | 453.00000000 | | 7K60FXE |
| 1 | 1 | 453.00000000 | | 11K2F3E |
| 2 | 1 | 453.00000000 | | 7K60FXE |
| 2 | 1 | 453.00000000 | | 11K2F3E |
| 7 | 1 | 456.57500000 | | 7K60FXE |
| 7 | 1 | 456.57500000 | | 11K2F3E |
| 7 | 1 | 457.40000000 | | 11K2F3E |
| 7 | 1 | 457.40000000 | | 7K60FXE |
| 7 | 1 | 457.97500000 | | 7K60FXE |
| 7 | 1 | 457.97500000 | | 11K2F3E |
| 5 | 1 | 458.00000000 | | 7K60FXE |
| 5 | 1 | 458.00000000 | | 11K2F3E |
| 6 | 1 | 458.00000000 | | 11K2F3E |
| 6 | 1 | 458.00000000 | | 7K60FXE |
| 3 | 1 | 462.20000000 | | 7K60FXE |
| 3 | 1 | 462.20000000 | | 11K2F3E |
| 3 | 1 | 462.45000000 | | 11K2F3E |
| 3 | 1 | 462.45000000 | | 7K60FXE |
| 7 | 1 | 467.20000000 | | 7K60FXE |
| 7 | 1 | 467.20000000 | | 11K2F3E |
| 7 | 1 | 467.45000000 | | 11K2F3E |
| 7 | 1 | 467.45000000 | | 7K60FXE |
| 4 | 1 | 469.42500000 | | 11K2F3E |
| 4 | 1 | 469.42500000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 233 SOUTH WACKER DRIVE, SEARS TWR, CHICAGO, COOK, IL | 41.87891667, -87.63616667 | 181.000 m | B | 370.000 m structure / 370.000 m overall | N |
| 2 | T | 435 N MICHIGAN AVE,TRIBUNE TOWER, CHICAGO, COOK, IL | 41.89030556, -87.62338889 | 180.000 m | B | 160.000 m structure / 160.000 m overall | N |
| 3 | T | 777 W CHICAGO AVE, FREEDOM CTR, CHICAGO, COOK, IL | 41.89613889, -87.64561111 | 179.000 m | B | 24.000 m structure / 30.000 m overall | N |
| 4 | T | COOK, IL | 41.89613889, -87.64561111 | | | | |
| 5 | T | | | | | | |
| 6 | T | | | | | | |
| 7 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 370.000 m | | | | 369.000 | |
| 1 | 2 | T | | 160.000 m | | | | 161.000 | |
| 1 | 3 | T | | 30.000 m | | | | 30.000 | |
| 1 | 4 | T | | | | | | | |
| 1 | 5 | T | | | | | | | |
| 1 | 6 | T | | | | | | | |
| 1 | 7 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 777 WEST CHICAGO AVENUE, CHICAGO, IL | COOK | 3122222156 |
| 2 | 435 North Michigan Avenue, Chicago, IL | COOK | 3122229100 |
License history
| Date | File or call sign | Action |
|---|
| 2025-05-10 | WQP427 | LIEXP |
| 2024-12-16 | WQP427 | LETRES |
| 2015-03-07 | WQP427 | LIREN |
| 2014-12-15 | WQP427 | LETRES |
| 2014-08-05 | WQP427 | LITRAN |
| 2014-08-01 | WQP427 | LIAUA |
| 2014-08-01 | WQP427 | ESUAPR |
| 2014-07-31 | WQP427 | ESCAPR |
| 2013-02-06 | WQP427 | LIAUA |
| 2013-02-05 | WQP427 | ESCAPR |
| 2012-12-31 | WQP427 | LIASS |
| 2012-03-05 | WQP427 | LIMOD |
| 2012-01-27 | WQP427 | LTSAPR |
| 2010-04-30 | WQP427 | LTSAPR |
| 2009-03-24 | WQP427 | LIASS |
| 2008-12-19 | WQP427 | LTSAPR |
| 2008-12-16 | WQP427 | LTSAPR |
| 2008-12-16 | WQP427 | LIAUA |
| 2007-12-20 | WQP427 | LITRAN |
| 2007-05-01 | WQP427 | ESCAPR |
| 2005-03-11 | WQP427 | LIREN |
| 2005-03-10 | WQP427 | ESCAPR |
| 2005-03-10 | WQP427 | LTSFRN |
| 2004-12-13 | WQP427 | LETRES |
| 2002-12-05 | WQP427 | AUDOPR |
| 2000-11-23 | WQP427 | LICCNV |
| 2000-03-10 | WQP427 | AUTHPR |
| 2000-03-10 | WQP427 | LIRMD |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1833671 | 2026-08-02 01:20:30 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQP427 | ULS 1833671 | 2026-08-02 01:20:30 |
| Status | E | ULS 1833671 | 2026-08-02 01:20:30 |
| Service | IG | ULS 1833671 | 2026-08-02 01:20:30 |
| Grant Date | 2015-03-07 | ULS 1833671 | 2026-08-02 01:20:30 |
| Expiration Date | 2025-03-10 | ULS 1833671 | 2026-08-02 01:20:30 |
| Cancellation Date | 2025-05-10 | ULS 1833671 | 2026-08-02 01:20:30 |