Universal Licensing System
WRBZ287
COOK COUNTY SHERIFF'S POLICE
License details
| ULS identifier | 4069858 |
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| Call sign | WRBZ287 |
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| Radio service | YE |
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| Status | A |
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| Grant date | 2023-03-13 |
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| Expiration | 2033-06-06 |
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| Frequency range | 809.6875 - 854.6875 MHz (2 frequencies) |
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| Locations | 7 |
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| Representative location | Chicago, COOK, IL |
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| Coordinates | 41.7064167, -87.5925556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:13:59 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 6 | 1 | MO | 809.68750000 | | | 3.000000 | 3.000000 | |
| 7 | 1 | FX1 | 809.68750000 | | | 3.000000 | 3.000000 | |
| 1 | 1 | FB2 | 854.68750000 | | | 63.100000 | 75.000000 | |
| 2 | 1 | FB2 | 854.68750000 | | | 63.100000 | 138.000000 | |
| 3 | 1 | FB2 | 854.68750000 | | | 63.000000 | 87.000000 | |
| 4 | 1 | FB2 | 854.68750000 | | | 64.500000 | 138.000000 | |
| 5 | 1 | FB2 | 854.68750000 | | | 63.100000 | 138.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 6 | 1 | 809.68750000 | | 8K10F1E |
| 6 | 1 | 809.68750000 | | 8K10F1D |
| 7 | 1 | 809.68750000 | | 8K10F1E |
| 7 | 1 | 809.68750000 | | 8K10F1D |
| 1 | 1 | 854.68750000 | | 8K70D1W |
| 2 | 1 | 854.68750000 | | 8K70D1W |
| 3 | 1 | 854.68750000 | | 8K70D1W |
| 4 | 1 | 854.68750000 | | 8K70D1W |
| 5 | 1 | 854.68750000 | | 8K70D1W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | | 1154 RIDGE RD, HOMEWOOD, COOK, IL | 41.56169444, -87.64552778 | 193.800 m | SILO | 91.000 m structure / 97.500 m overall | |
| 2 | | 10351 South Woodlawn Ave - Southeast Corner of Property, Chicago, COOK, IL | 41.70641667, -87.59255556 | 180.000 m | GTOWER | 73.500 m structure / 73.500 m overall | |
| 3 | | 26th & Beach Ave - West end of Cook County Highway Dept Yard, La Grange Park, COOK, IL | 41.84269444, -87.86505556 | 191.100 m | GTOWER | 73.100 m structure / 79.200 m overall | |
| 4 | | 10220 South 76th Avenue, Bridgeview, COOK, IL | 41.70780556, -87.81133333 | 181.300 m | GTOWER | 73.100 m structure / 79.200 m overall | |
| 5 | | 135th & Ashland Ave. - NW Corner of Cook County Highway Dept Yard, Blue Island, COOK, IL | 41.64797222, -87.66636111 | 182.900 m | GTOWER | 73.100 m structure / 79.200 m overall | |
| 6 | | COOK, IL | | | BANT | | |
| 7 | | COOK, IL | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 63.400 m | V | 10.3000 | 345.0000 | 62.100 | |
| 1 | 2 | T | | 63.400 m | V | 10.3000 | 300.0000 | 62.500 | |
| 1 | 3 | T | | 63.400 m | V | 8.3000 | 90.0000 | 58.200 | |
| 1 | 4 | T | | 63.400 m | V | 10.3000 | 90.0000 | 51.400 | |
| 1 | 5 | T | | 63.400 m | V | 10.3000 | 300.0000 | 59.800 | |
| 1 | 6 | T | | | | | | | |
| 1 | 7 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 1401 S Maybrook Drive, Maywood, IL | COOK | 7088654808 |
License history
| Date | File or call sign | Action |
|---|
| 2023-03-13 | WRBZ287 | LIREN |
| 2023-03-08 | WRBZ287 | ESURNW |
| 2021-04-20 | WRBZ287 | LIAUA |
| 2020-02-12 | WRBZ287 | COR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4069858 | 2026-08-02 01:13:59 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WRBZ287 | ULS 4069858 | 2026-08-02 01:13:59 |
| Status | A | ULS 4069858 | 2026-08-02 01:13:59 |
| Service | YE | ULS 4069858 | 2026-08-02 01:13:59 |
| Grant Date | 2023-03-13 | ULS 4069858 | 2026-08-02 01:13:59 |
| Expiration Date | 2033-06-06 | ULS 4069858 | 2026-08-02 01:13:59 |