Universal Licensing System
WAJ4
AERONAUTICAL RADIO INC
License details
| ULS identifier | 1973885 |
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| Call sign | WAJ4 |
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| Radio service | AF |
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| Status | C |
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| Grant date | 2002-03-05 |
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| Expiration | 2007-04-16 |
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| Cancellation | 2003-12-03 |
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| Frequency range | 131.5 MHz |
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| Locations | 1 |
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| Representative location | CHICAGO, COOK, IL |
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| Coordinates | 41.7861389, -87.7522778 |
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| Source archive | l_coast.zip |
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| Dataset refreshed | 2026-08-02 02:08:24 |
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Licensee
| Name | AERONAUTICAL RADIO INC |
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| Applicant type | C |
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| FRN | 0002152155 |
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| Location | ANNAPOLIS, MD |
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| Address | 2551 RIVA RD, ANNAPOLIS, MD, 21401 |
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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 | FA | 131.50000000 | | | 55.000000 | | LL |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 131.50000000 | | 6K00A3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | CHICAGO MIDWAY AIRPORT, CHICAGO, COOK, IL | 41.78613889, -87.75227778 | 189.000 m | | 8.000 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | 14.000 m | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | AMERICA WEST FLIGHT CONTROL SKY HARBOR AIRPORT, PHOENIX, AZ | | |
License history
| Date | File or call sign | Action |
|---|
| 2003-12-03 | WAJ4 | LICAN |
| 2002-03-05 | WAJ4 | LIREN |
| 2002-01-22 | WAJ4 | LETRES |
| 2001-04-27 | WAJ4 | LICCNV |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 1973885 | 2026-08-02 02:08:24 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WAJ4 | ULS 1973885 | 2026-08-02 02:08:24 |
| Status | C | ULS 1973885 | 2026-08-02 02:08:24 |
| Service | AF | ULS 1973885 | 2026-08-02 02:08:24 |
| Grant Date | 2002-03-05 | ULS 1973885 | 2026-08-02 02:08:24 |
| Expiration Date | 2007-04-16 | ULS 1973885 | 2026-08-02 02:08:24 |
| Cancellation Date | 2003-12-03 | ULS 1973885 | 2026-08-02 02:08:24 |