Universal Licensing System
WRZF531
B.U.I.L.D. INC
License details
| ULS identifier | 4834294 |
|---|
| Call sign | WRZF531 |
|---|
| Radio service | IG |
|---|
| Status | A |
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| Grant date | 2023-10-26 |
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| Expiration | 2033-10-26 |
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| Frequency range | 452.1125 - 457.7625 MHz (7 frequencies) |
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| Locations | 1 |
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| Representative location | Chicago, COOK, IL |
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| Coordinates | 41.8730556, -87.7538889 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:23:59 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 452.11250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.31250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.41250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.76250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.31250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.41250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.76250000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.11250000 | | 7K60FXE |
| 1 | 1 | 452.31250000 | | 7K60FXE |
| 1 | 1 | 452.41250000 | | 7K60FXE |
| 1 | 1 | 452.76250000 | | 7K60FXE |
| 1 | 1 | 457.31250000 | | 7K60FXE |
| 1 | 1 | 457.41250000 | | 7K60FXE |
| 1 | 1 | 457.76250000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 5100 W Harrison St, Chicago, COOK, IL | 41.87305556, -87.75388889 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 5100 W Harrison St, Chicago, IL | COOK | 7732272880 |
License history
| Date | File or call sign | Action |
|---|
| 2024-07-30 | WRZF531 | LETCNS |
| 2023-10-26 | WRZF531 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4834294 | 2026-08-02 01:23:59 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRZF531 | ULS 4834294 | 2026-08-02 01:23:59 |
| Status | A | ULS 4834294 | 2026-08-02 01:23:59 |
| Service | IG | ULS 4834294 | 2026-08-02 01:23:59 |
| Grant Date | 2023-10-26 | ULS 4834294 | 2026-08-02 01:23:59 |
| Expiration Date | 2033-10-26 | ULS 4834294 | 2026-08-02 01:23:59 |