Universal Licensing System
WRDF381
444 NORTH MICHIGAN AVENUE
License details
| ULS identifier | 4149873 |
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| Call sign | WRDF381 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2019-04-16 |
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| Expiration | 2029-04-16 |
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| Frequency range | 451.3875 - 452.8875 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | CHICAGO, COOK, IL |
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| Coordinates | 41.8916667, -87.6238889 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:41 |
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Licensee
| Name | 444 NORTH MICHIGAN AVENUE |
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| Applicant type | C |
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| FRN | 0028241610 |
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| Location | CHICAGO, IL |
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| Address | 444 N MICHIGAN AVENUE, CHICAGO, IL, 60611 |
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| Phone | 3104408828 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
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| 1 | 1 | MO | 451.38750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 451.53750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 451.58750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.51250000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 452.88750000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.38750000 | | 11K2F3E |
| 1 | 1 | 451.53750000 | | 11K2F3E |
| 1 | 1 | 451.58750000 | | 11K2F3E |
| 1 | 1 | 452.51250000 | | 11K2F3E |
| 1 | 1 | 452.88750000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | CHICAGO, COOK, IL | 41.89166667, -87.62388889 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 444 N MICHIGAN AVENUE, CHICAGO, IL | COOK | 3104408828 |
License history
| Date | File or call sign | Action |
|---|
| 2019-04-16 | WRDF381 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 4149873 | 2026-08-02 01:22:41 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WRDF381 | ULS 4149873 | 2026-08-02 01:22:41 |
| Status | A | ULS 4149873 | 2026-08-02 01:22:41 |
| Service | IG | ULS 4149873 | 2026-08-02 01:22:41 |
| Grant Date | 2019-04-16 | ULS 4149873 | 2026-08-02 01:22:41 |
| Expiration Date | 2029-04-16 | ULS 4149873 | 2026-08-02 01:22:41 |