Universal Licensing System
WLT879
The Chicago Switch, LLC
License details
| ULS identifier | 998603 |
|---|
| Call sign | WLT879 |
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| Radio service | CF |
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| Status | E |
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| Grant date | 2011-04-25 |
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| Expiration | 2021-02-01 |
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| Cancellation | 2021-04-03 |
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| Frequency range | 19350 - 22975 MHz (4 frequencies) |
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| Locations | 2 |
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| Representative location | CHICAGO, COOK, IL |
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| Coordinates | 41.8808611, -87.6730833 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:27 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 19350.00000000 | | | | | |
| 1 | 1 | FXO | 19390.00000000 | | | | | |
| 1 | 2 | FXO | 22725.00000000 | | | | | |
| 1 | 2 | FXO | 22975.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 19350.00000000 | | 20M0F8W |
| 1 | 1 | 19390.00000000 | | 20M0F8W |
| 1 | 2 | 22725.00000000 | | 25M0F8W |
| 1 | 2 | 22975.00000000 | | 25M0F8W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 1901 W MADISON, CHICAGO, COOK, IL | 41.88086111, -87.67308333 | 181.400 m | | 28.700 m overall | |
| 2 | R | | 41.89891667, -87.62308333 | 180.700 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | Milliflect 255-18-2 | | H | 38.7000 | 64.2000 | | |
| 1 | 2 | R | Milliflect 255-18-2 | | | 38.7000 | | | |
| 2 | 1 | T | M/A Com K-24 | | V | 40.6000 | 64.2000 | | |
| 2 | 2 | R | M/A Com K-24 | | | 40.6000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2021-04-03 | WLT879 | LIEXP |
| 2020-11-09 | WLT879 | LETRES |
| 2011-04-25 | WLT879 | LIREN |
| 2010-11-08 | WLT879 | LETRES |
| 2005-06-23 | WLT879 | LIASS |
| 2005-06-02 | WLT879 | ESUAPR |
| 2005-05-12 | WLT879 | LIAUA |
| 2005-05-11 | WLT879 | ESUAPR |
| 2003-06-17 | WLT879 | LIAUA |
| 2003-05-14 | WLT879 | LIAUA |
| 2002-02-13 | WLT879 | LIASS |
| 2001-03-13 | WLT879 | LIREN |
| 2001-01-25 | WLT879 | AUTHPR |
| 2001-01-25 | WLT879 | COR |
| 2001-01-24 | WLT879 | INTDUP |
| 2001-01-24 | WLT879 | COR |
| 2000-11-13 | WLT879 | LETRES |
| 1999-08-14 | WLT879 | LICCNV |
| 1997-12-23 | WLT879 | COR |
| 1996-07-30 | WLT879 | LIASS |
| 1996-04-16 | WLT879 | LITRAN |
| 1995-09-27 | WLT879 | LITRAN |
| 1991-04-17 | WLT879 | LIREN |
| 1991-03-25 | WLT879 | LIMOD |
| 1990-02-07 | WLT879 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 998603 | 2026-08-02 02:47:27 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WLT879 | ULS 998603 | 2026-08-02 02:47:27 |
| Status | E | ULS 998603 | 2026-08-02 02:47:27 |
| Service | CF | ULS 998603 | 2026-08-02 02:47:27 |
| Grant Date | 2011-04-25 | ULS 998603 | 2026-08-02 02:47:27 |
| Expiration Date | 2021-02-01 | ULS 998603 | 2026-08-02 02:47:27 |
| Cancellation Date | 2021-04-03 | ULS 998603 | 2026-08-02 02:47:27 |