Universal Licensing System
WRDI220
MAESTRO INTERNATIONAL CARGO LLC
License details
| ULS identifier | 4156787 |
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| Call sign | WRDI220 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2019-05-03 |
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| Expiration | 2029-05-03 |
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| Frequency range | 451.3875 - 456.7625 MHz (3 frequencies) |
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| Locations | 1 |
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| Representative location | CHICAGO, COOK, IL |
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| Coordinates | 41.9968056, -87.8894444 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:47 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 451.38750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.38750000 | | | 4.000000 | 4.000000 | |
| 1 | 1 | MO | 456.76250000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 451.38750000 | | 7K60FXE |
| 1 | 1 | 456.38750000 | | 7K60FXE |
| 1 | 1 | 456.76250000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 837 PATTON DRIVE, DOOR C, CHICAGO, COOK, IL | 41.99680556, -87.88944444 | | | | |
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 | 837 PATTON DRIVE, DOOR C, CHICAGO, IL | COOK | 3129950070 |
License history
| Date | File or call sign | Action |
|---|
| 2020-02-04 | WRDI220 | LETCNS |
| 2019-05-03 | WRDI220 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4156787 | 2026-08-02 01:22:47 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WRDI220 | ULS 4156787 | 2026-08-02 01:22:47 |
| Status | A | ULS 4156787 | 2026-08-02 01:22:47 |
| Service | IG | ULS 4156787 | 2026-08-02 01:22:47 |
| Grant Date | 2019-05-03 | ULS 4156787 | 2026-08-02 01:22:47 |
| Expiration Date | 2029-05-03 | ULS 4156787 | 2026-08-02 01:22:47 |