Universal Licensing System
WMZ4
Aviation Spectrum Resources Inc
License details
| ULS identifier | 1980178 |
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| Call sign | WMZ4 |
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| Radio service | AF |
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| Status | A |
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| Grant date | 2025-07-10 |
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| Expiration | 2035-06-20 |
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| Frequency range | 131.7 MHz |
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| Locations | 1 |
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| Representative location | ONTARIO, SAN BERNARDINO, CA |
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| Coordinates | 34.0602500, -117.6055000 |
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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 | 131.70000000 | | | 10.000000 | | LL |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 131.70000000 | | 6K00A3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | ONTARIO INTERNATIONAL AIRPORT, ONTARIO, SAN BERNARDINO, CA | 34.06025000, -117.60550000 | 287.800 m | BANT | 10.000 m structure / 12.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 12.000 m | | | 360.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-07-10 | WMZ4 | LIREN |
| 2025-03-24 | WMZ4 | LETRES |
| 2015-06-09 | WMZ4 | LIREN |
| 2015-03-30 | WMZ4 | LETRES |
| 2015-02-06 | WMZ4 | LIAUA |
| 2015-02-05 | WMZ4 | LIAUA |
| 2015-02-05 | WMZ4 | ESUAPR |
| 2015-02-04 | WMZ4 | ESUAPR |
| 2007-03-01 | WMZ4 | AUTHPR |
| 2006-03-07 | WMZ4 | AUTHPR |
| 2006-01-01 | WMZ4 | LIASS |
| 2005-07-25 | WMZ4 | ESCAPR |
| 2005-05-17 | WMZ4 | LIREN |
| 2005-03-28 | WMZ4 | LETRES |
| 2001-04-27 | WMZ4 | LICCNV |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1980178 | 2026-08-02 02:08:30 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WMZ4 | ULS 1980178 | 2026-08-02 02:08:30 |
| Status | A | ULS 1980178 | 2026-08-02 02:08:30 |
| Service | AF | ULS 1980178 | 2026-08-02 02:08:30 |
| Grant Date | 2025-07-10 | ULS 1980178 | 2026-08-02 02:08:30 |
| Expiration Date | 2035-06-20 | ULS 1980178 | 2026-08-02 02:08:30 |