Universal Licensing System
WLL4
Aviation Spectrum Resources Inc
License details
| ULS identifier | 1979927 |
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| Call sign | WLL4 |
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| Radio service | AF |
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| Status | A |
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| Grant date | 2025-03-20 |
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| Expiration | 2035-01-25 |
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| Frequency range | 131.925 MHz |
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| Locations | 1 |
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| Representative location | SEATTLE, KING, WA |
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| Coordinates | 47.4620556, -122.3062222 |
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| Source archive | l_coast.zip |
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| Dataset refreshed | 2026-08-02 02:08:30 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FA | 131.92500000 | | | 55.000000 | | LL |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 131.92500000 | | 6K00A3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | SEATTLE TACOMA INTERNATIONAL AIRPORT, SEATTLE, KING, WA | 47.46205556, -122.30622222 | 131.000 m | B | 23.000 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 23.000 m | | | | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-03-20 | WLL4 | LIREN |
| 2024-11-04 | WLL4 | LETRES |
| 2015-02-06 | WLL4 | LIAUA |
| 2015-02-05 | WLL4 | ESUAPR |
| 2015-02-05 | WLL4 | LIAUA |
| 2015-02-04 | WLL4 | ESUAPR |
| 2015-01-06 | WLL4 | LIREN |
| 2014-11-03 | WLL4 | LETRES |
| 2007-03-01 | WLL4 | AUTHPR |
| 2006-03-07 | WLL4 | AUTHPR |
| 2006-01-01 | WLL4 | LIASS |
| 2005-07-25 | WLL4 | ESCAPR |
| 2004-12-21 | WLL4 | LIREN |
| 2004-11-01 | WLL4 | LETRES |
| 2001-04-27 | WLL4 | LICCNV |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1979927 | 2026-08-02 02:08:30 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WLL4 | ULS 1979927 | 2026-08-02 02:08:30 |
| Status | A | ULS 1979927 | 2026-08-02 02:08:30 |
| Service | AF | ULS 1979927 | 2026-08-02 02:08:30 |
| Grant Date | 2025-03-20 | ULS 1979927 | 2026-08-02 02:08:30 |
| Expiration Date | 2035-01-25 | ULS 1979927 | 2026-08-02 02:08:30 |