Universal Licensing System
WOK4
Aviation Spectrum Resources Inc
License details
| ULS identifier | 1980435 |
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| Call sign | WOK4 |
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| Radio service | AF |
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| Status | A |
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| Grant date | 2025-04-02 |
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| Expiration | 2035-02-08 |
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| Frequency range | 131.225 MHz |
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| Locations | 1 |
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| Representative location | BILLINGS, YELLOWSTONE, MT |
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| Coordinates | 45.8032778, -108.5548611 |
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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 |
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| 1 | 1 | FA | 131.22500000 | | | 10.000000 | | LL |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 131.22500000 | | 6K00A3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | BILLINGS LOGAN INTERNATIONAL AIRPORT, BILLINGS, YELLOWSTONE, MT | 45.80327778, -108.55486111 | 1116.200 m | BANT | 9.000 m structure / 11.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 11.000 m | | | 360.0000 | | |
Control points
| Number | Address | County | Phone |
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| 1 | DELTA AIR LINES ATLANTA INTERNATIONAL AIRPORT, ATLANTA, GA | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-04-02 | WOK4 | LIREN |
| 2024-11-18 | WOK4 | LETRES |
| 2015-02-06 | WOK4 | LIAUA |
| 2015-02-05 | WOK4 | LIAUA |
| 2015-02-05 | WOK4 | ESUAPR |
| 2015-02-04 | WOK4 | ESUAPR |
| 2015-01-27 | WOK4 | LIREN |
| 2014-11-17 | WOK4 | LETRES |
| 2007-03-01 | WOK4 | AUTHPR |
| 2006-03-07 | WOK4 | AUTHPR |
| 2006-01-01 | WOK4 | LIASS |
| 2005-07-25 | WOK4 | ESCAPR |
| 2005-01-11 | WOK4 | LIREN |
| 2004-11-15 | WOK4 | LETRES |
| 2001-04-27 | WOK4 | LICCNV |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1980435 | 2026-08-02 02:08:30 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WOK4 | ULS 1980435 | 2026-08-02 02:08:30 |
| Status | A | ULS 1980435 | 2026-08-02 02:08:30 |
| Service | AF | ULS 1980435 | 2026-08-02 02:08:30 |
| Grant Date | 2025-04-02 | ULS 1980435 | 2026-08-02 02:08:30 |
| Expiration Date | 2035-02-08 | ULS 1980435 | 2026-08-02 02:08:30 |