Universal Licensing System
WNXU433
MCI Communications Services, Inc.
License details
| ULS identifier | 1879228 |
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| Call sign | WNXU433 |
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| Radio service | IG |
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| Status | C |
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| Grant date | 2001-09-29 |
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| Expiration | 2011-11-07 |
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| Cancellation | 2007-11-20 |
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| Frequency range | 451.5 - 456.5 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | ELK MOUNTAIN, CARBON, WY |
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| Coordinates | 41.6335833, -106.5255833 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:13:20 |
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Licensee
| Name | MCI Communications Services, Inc. |
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| Applicant type | C |
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| Location | Richardson, TX |
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| Address | 2400 N. Glenville Drive, Dept/Loc 71216/107, Richardson, TX, 75082 |
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| Phone | 9727296406 |
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| Email | [email protected] |
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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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| 2 | 1 | FB2 | 451.50000000 | | | 100.000000 | 426.000000 | |
| 1 | 1 | FX1 | 456.50000000 | | | 40.000000 | | |
| 3 | 1 | MO | 456.50000000 | | | 40.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 451.50000000 | | 20K0F3E |
| 1 | 1 | 456.50000000 | | 20K0F3E |
| 3 | 1 | 456.50000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | WY | | | | | |
| 2 | T | ELK MOUNTAIN 8 MI SW, ELK MOUNTAIN, CARBON, WY | 41.63358333, -106.52558333 | 3402.000 m | | 4.000 m structure / 4.000 m overall | N |
| 3 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | | | | | | |
| 1 | 2 | T | | 2.000 m | | | | | |
| 1 | 3 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 2270 LAKESIDE BLVD 42955/B82, RICHARDSON, TX | | 9726565698 |
License history
| Date | File or call sign | Action |
|---|
| 2007-11-21 | WNXU433 | LICAN |
| 2006-01-06 | WNXU433 | LITRAN |
| 2005-12-31 | WNXU433 | LIASS |
| 2005-06-08 | WNXU433 | LIAUA |
| 2005-06-07 | WNXU433 | ESUAPR |
| 2005-05-02 | WNXU433 | ESCAPR |
| 2005-03-11 | WNXU433 | ESUAPR |
| 2004-04-20 | WNXU433 | LIASS |
| 2003-02-12 | WNXU433 | LIAUA |
| 2003-01-15 | WNXU433 | LIAUA |
| 2003-01-14 | WNXU433 | LIAUA |
| 2002-07-21 | WNXU433 | LIASS |
| 2002-05-31 | WNXU433 | AUDOPR |
| 2002-02-20 | WNXU433 | LIAUA |
| 2001-09-29 | WNXU433 | LIREN |
| 2001-08-13 | WNXU433 | LETRES |
| 2000-11-24 | WNXU433 | LICCNV |
| 2000-01-14 | WNXU433 | AUTHPR |
| 2000-01-13 | WNXU433 | LIMOD |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1879228 | 2026-08-02 01:13:20 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WNXU433 | ULS 1879228 | 2026-08-02 01:13:20 |
| Status | C | ULS 1879228 | 2026-08-02 01:13:20 |
| Service | IG | ULS 1879228 | 2026-08-02 01:13:20 |
| Grant Date | 2001-09-29 | ULS 1879228 | 2026-08-02 01:13:20 |
| Expiration Date | 2011-11-07 | ULS 1879228 | 2026-08-02 01:13:20 |
| Cancellation Date | 2007-11-20 | ULS 1879228 | 2026-08-02 01:13:20 |