Universal Licensing System
WRZH413
Cook County School District 30
License details
| ULS identifier | 4836749 |
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| Call sign | WRZH413 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2023-11-01 |
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| Expiration | 2033-11-01 |
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| Frequency range | 451.6625 - 457.4875 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | Blue Island, COOK, IL |
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| Coordinates | 41.6675833, -87.6880556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:21:47 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.66250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.18750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.66250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.18750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.48750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.66250000 | | 7K60FXD |
| 1 | 1 | 451.66250000 | | 7K60FXE |
| 1 | 1 | 452.18750000 | | 7K60FXE |
| 1 | 1 | 452.18750000 | | 7K60FXD |
| 1 | 1 | 456.66250000 | | 7K60FXD |
| 1 | 1 | 456.66250000 | | 7K60FXE |
| 1 | 1 | 457.18750000 | | 7K60FXE |
| 1 | 1 | 457.18750000 | | 7K60FXD |
| 1 | 1 | 457.48750000 | | 7K60FXE |
| 1 | 1 | 457.48750000 | | 7K60FXD |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Blue Island, COOK, IL | 41.66758333, -87.68805556 | | | | |
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 |
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| 1 | 12418 S Highland Ave, Blue Island, IL | COOK | 7083853399 |
License history
| Date | File or call sign | Action |
|---|
| 2023-11-01 | WRZH413 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4836749 | 2026-08-02 01:21:47 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRZH413 | ULS 4836749 | 2026-08-02 01:21:47 |
| Status | A | ULS 4836749 | 2026-08-02 01:21:47 |
| Service | IG | ULS 4836749 | 2026-08-02 01:21:47 |
| Grant Date | 2023-11-01 | ULS 4836749 | 2026-08-02 01:21:47 |
| Expiration Date | 2033-11-01 | ULS 4836749 | 2026-08-02 01:21:47 |