Universal Licensing System
WRMZ911
Exxon Mobil Corporation
License details
| ULS identifier | 4465619 |
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| Call sign | WRMZ911 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2021-07-01 |
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| Expiration | 2031-07-01 |
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| Frequency range | 452.425 - 457.425 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | HOUSTON, HARRIS, TX |
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| Coordinates | 29.9749722, -95.3420000 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:23:05 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 452.42500000 | | | 40.000000 | 40.000000 | |
| 2 | 1 | MO | 457.42500000 | | | 4.000000 | 4.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.42500000 | | 11K2F3E |
| 2 | 1 | 457.42500000 | | 11K2F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 18000 CHANUTE ROAD, HOUSTON INTERNATIONAL AIRPORT, HOUSTON, HARRIS, TX | 29.97497222, -95.34200000 | 42.000 m | B | 8.000 m structure / 8.000 m overall | |
| 2 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 8.000 m | | | | 9.900 | |
| 1 | 2 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 22777 SPRINGWOODS VILLAGE PAKWAY, SPRING, TX | HARRIS | 8326248504 |
License history
| Date | File or call sign | Action |
|---|
| 2026-07-21 | WRMZ911 | LIAUA |
| 2025-04-07 | WRMZ911 | LIASS |
| 2022-04-05 | WRMZ911 | LETCNS |
| 2021-07-01 | WRMZ911 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4465619 | 2026-08-02 01:23:05 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRMZ911 | ULS 4465619 | 2026-08-02 01:23:05 |
| Status | A | ULS 4465619 | 2026-08-02 01:23:05 |
| Service | IG | ULS 4465619 | 2026-08-02 01:23:05 |
| Grant Date | 2021-07-01 | ULS 4465619 | 2026-08-02 01:23:05 |
| Expiration Date | 2031-07-01 | ULS 4465619 | 2026-08-02 01:23:05 |