Universal Licensing System
WRDK777
Chicago Public Schools - Warehousing
License details
| ULS identifier | 4162647 |
|---|
| Call sign | WRDK777 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2019-05-21 |
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| Expiration | 2029-05-21 |
|---|
| Frequency range | 452.725 - 468.65 MHz (5 frequencies) |
|---|
| Locations | 1 |
|---|
| Representative location | Chicago, COOK, IL |
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| Coordinates | 41.8075833, -87.7118611 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:51 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 452.72500000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 457.75000000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 462.22500000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 466.46250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 468.65000000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.72500000 | | 7K60FXE |
| 1 | 1 | 452.72500000 | | 7K60FXD |
| 1 | 1 | 452.72500000 | | 11K2F3E |
| 1 | 1 | 457.75000000 | | 7K60FXD |
| 1 | 1 | 457.75000000 | | 11K2F3E |
| 1 | 1 | 457.75000000 | | 7K60FXE |
| 1 | 1 | 462.22500000 | | 7K60FXD |
| 1 | 1 | 462.22500000 | | 11K2F3E |
| 1 | 1 | 462.22500000 | | 7K60FXE |
| 1 | 1 | 466.46250000 | | 11K2F3E |
| 1 | 1 | 466.46250000 | | 7K60FXE |
| 1 | 1 | 466.46250000 | | 7K60FXD |
| 1 | 1 | 468.65000000 | | 7K60FXE |
| 1 | 1 | 468.65000000 | | 11K2F3E |
| 1 | 1 | 468.65000000 | | 7K60FXD |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Chicago, COOK, IL | 41.80758333, -87.71186111 | | | | |
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 | 4720 S St Louis Ave, Chicago, IL | COOK | 7735358700 |
License history
| Date | File or call sign | Action |
|---|
| 2020-02-19 | WRDK777 | LETCNS |
| 2019-05-21 | WRDK777 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4162647 | 2026-08-02 01:22:51 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDK777 | ULS 4162647 | 2026-08-02 01:22:51 |
| Status | A | ULS 4162647 | 2026-08-02 01:22:51 |
| Service | IG | ULS 4162647 | 2026-08-02 01:22:51 |
| Grant Date | 2019-05-21 | ULS 4162647 | 2026-08-02 01:22:51 |
| Expiration Date | 2029-05-21 | ULS 4162647 | 2026-08-02 01:22:51 |