Universal Licensing System
WIM331
ESP Wireless Technology Group
License details
| ULS identifier | 1645401 |
|---|
| Call sign | WIM331 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2025-02-12 |
|---|
| Expiration | 2035-04-18 |
|---|
| Frequency range | 472.6375 - 475.6375 MHz (2 frequencies) |
|---|
| Locations | 3 |
|---|
| Representative location | CHICAGO, COOK, IL |
|---|
| Coordinates | 41.8789167, -87.6361667 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| 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 | 472.63750000 | | | 100.000000 | 250.000000 | |
| 2 | 1 | MO | 472.63750000 | | | 50.000000 | 50.000000 | |
| 2 | 1 | MO | 475.63750000 | | | 50.000000 | 50.000000 | |
| 3 | 1 | FX1T | 475.63750000 | | | 50.000000 | 50.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 472.63750000 | | 20K0F1D |
| 1 | 1 | 472.63750000 | | 11K2F3E |
| 1 | 1 | 472.63750000 | | 20K0F3E |
| 1 | 1 | 472.63750000 | | 11K2F2D |
| 1 | 1 | 472.63750000 | | 11K2F1D |
| 2 | 1 | 472.63750000 | | 20K0F1D |
| 2 | 1 | 472.63750000 | | 11K2F3E |
| 2 | 1 | 472.63750000 | | 20K0F3E |
| 2 | 1 | 472.63750000 | | 11K2F2D |
| 2 | 1 | 472.63750000 | | 11K2F1D |
| 2 | 1 | 475.63750000 | | 11K2F1D |
| 2 | 1 | 475.63750000 | | 11K2F3E |
| 2 | 1 | 475.63750000 | | 20K0F3E |
| 2 | 1 | 475.63750000 | | 11K2F2D |
| 2 | 1 | 475.63750000 | | 20K0F1D |
| 3 | 1 | 475.63750000 | | 11K2F2D |
| 3 | 1 | 475.63750000 | | 20K0F3E |
| 3 | 1 | 475.63750000 | | 20K0F1D |
| 3 | 1 | 475.63750000 | | 11K2F3E |
| 3 | 1 | 475.63750000 | | 11K2F1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | SEARS TOWER, CHICAGO, COOK, IL | 41.87891667, -87.63616667 | 181.000 m | B | 438.000 m structure / 522.000 m overall | N |
| 2 | T | | | | | | N |
| 3 | T | | | | | | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 366.000 m | | | | 369.000 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 2 | 9126 Ogden Ave., Brookfield, IL | COOK | 7084858930 |
| 3 | 9126 Ogden Avenue, Brookfield, IL | COOK | 7082888930 |
Special conditions
| Type | Condition code |
|---|
| P | 1035 |
| P | 4020 |
License history
| Date | File or call sign | Action |
|---|
| 2025-03-07 | WIM331 | LIAUA |
| 2025-02-12 | WIM331 | LIREN |
| 2025-01-20 | WIM331 | LETRES |
| 2022-07-12 | WIM331 | LIPASS |
| 2016-01-05 | WIM331 | LETCNS |
| 2015-04-02 | WIM331 | LIREN |
| 2015-03-16 | WIM331 | LTSAPR |
| 2015-01-26 | WIM331 | LETRES |
| 2010-12-14 | WIM331 | LIAUA |
| 2010-12-14 | WIM331 | LTSAPR |
| 2008-11-11 | WIM331 | LIAUA |
| 2008-11-11 | WIM331 | LTSAPR |
| 2006-03-02 | WIM331 | LTSAPR |
| 2006-03-01 | WIM331 | LIAUA |
| 2005-03-10 | WIM331 | LIREN |
| 2005-02-02 | WIM331 | COR |
| 2005-01-20 | WIM331 | LIASS |
| 2005-01-07 | WIM331 | ESCAPR |
| 2002-03-11 | WIM331 | AUDOPR |
| 2001-05-18 | WIM331 | LIMOD |
| 2000-11-23 | WIM331 | LICCNV |
| 2000-04-24 | WIM331 | AUTHPR |
| 2000-04-24 | WIM331 | LIREN |
| 2000-01-18 | WIM331 | LETRES |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1645401 | 2026-08-02 01:16:21 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WIM331 | ULS 1645401 | 2026-08-02 01:16:21 |
| Status | A | ULS 1645401 | 2026-08-02 01:16:21 |
| Service | IG | ULS 1645401 | 2026-08-02 01:16:21 |
| Grant Date | 2025-02-12 | ULS 1645401 | 2026-08-02 01:16:21 |
| Expiration Date | 2035-04-18 | ULS 1645401 | 2026-08-02 01:16:21 |