Universal Licensing System
WPXY487
ESP Wireless Technology Group
License details
| ULS identifier | 2528352 |
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| Call sign | WPXY487 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2023-04-12 |
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| Expiration | 2033-07-01 |
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| Frequency range | 471.8875 - 474.8875 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | CHICAGO, COOK, IL |
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| Coordinates | 41.8789167, -87.6361667 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:16:21 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB6 | 471.88750000 | | | 100.000000 | 250.000000 | |
| 2 | 1 | MO6 | 471.88750000 | | | 50.000000 | 50.000000 | |
| 2 | 1 | MO6 | 474.88750000 | | | 50.000000 | 50.000000 | |
| 3 | 1 | FX1T | 474.88750000 | | | 50.000000 | 50.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 471.88750000 | | 11K2F1D |
| 1 | 1 | 471.88750000 | | 11K2F3E |
| 1 | 1 | 471.88750000 | | 11K2F2D |
| 2 | 1 | 471.88750000 | | 11K2F2D |
| 2 | 1 | 471.88750000 | | 11K2F1D |
| 2 | 1 | 471.88750000 | | 11K2F3E |
| 2 | 1 | 474.88750000 | | 11K2F2D |
| 2 | 1 | 474.88750000 | | 11K2F3E |
| 2 | 1 | 474.88750000 | | 11K2F1D |
| 3 | 1 | 474.88750000 | | 11K2F2D |
| 3 | 1 | 474.88750000 | | 11K2F1D |
| 3 | 1 | 474.88750000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 233 SOUTH WACKER DRIVE, CHICAGO, COOK, IL | 41.87891667, -87.63616667 | 181.400 m | BTWR | 437.500 m structure / 527.300 m overall | |
| 2 | T | | | | | | |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 364.500 m | | | | 528.700 | |
| 1 | 2 | | | | | | | | |
| 1 | 3 | | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 8330 South Madison Street, Ste 15, Burr Ridge, IL | DUPAGE | 7084858930 |
Special conditions
| Type | Condition code |
|---|
| P | 1035 |
| P | 4020 |
License history
| Date | File or call sign | Action |
|---|
| 2025-03-07 | WPXY487 | LIAUA |
| 2023-04-12 | WPXY487 | LIREN |
| 2023-04-10 | WPXY487 | LETRES |
| 2014-11-19 | WPXY487 | LIMOD |
| 2013-04-16 | WPXY487 | LIREN |
| 2013-04-16 | WPXY487 | LTSAPR |
| 2013-04-08 | WPXY487 | LETRES |
| 2010-12-14 | WPXY487 | LTSAPR |
| 2010-12-14 | WPXY487 | LIAUA |
| 2008-11-13 | WPXY487 | LIAUA |
| 2008-11-13 | WPXY487 | LTSAPR |
| 2004-03-29 | WPXY487 | LETCNS |
| 2003-10-11 | WPXY487 | LIAUA |
| 2003-07-01 | WPXY487 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2528352 | 2026-08-02 01:16:21 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPXY487 | ULS 2528352 | 2026-08-02 01:16:21 |
| Status | A | ULS 2528352 | 2026-08-02 01:16:21 |
| Service | IG | ULS 2528352 | 2026-08-02 01:16:21 |
| Grant Date | 2023-04-12 | ULS 2528352 | 2026-08-02 01:16:21 |
| Expiration Date | 2033-07-01 | ULS 2528352 | 2026-08-02 01:16:21 |