Universal Licensing System
WDU233
MCI WORLDCOM NETWORK SERVICES INC
License details
| ULS identifier | 973843 |
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| Call sign | WDU233 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 1991-04-01 |
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| Expiration | 2001-02-01 |
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| Cancellation | 1997-10-29 |
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| Frequency range | 6197.2 - 6404.79 MHz (12 frequencies) |
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| Locations | 3 |
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| Representative location | VACAVILLE, SOLANO, CA |
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| Coordinates | 38.4151667, -122.1155000 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:48:07 |
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Licensee
| Name | MCI WORLDCOM NETWORK SERVICES INC |
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| Applicant type | C |
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| Location | RICHARDSON, TX |
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| Address | 2270 LAKESIDE DR, RICHARDSON, TX, 75082 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 2 | FXO | 6197.20000000 | | | | | |
| 1 | 2 | FXO | 6197.24000000 | | | | | |
| 1 | 1 | FXO | 6226.89000000 | | | | | |
| 1 | 3 | FXO | 6256.54000000 | | | | | |
| 1 | 4 | FXO | 6286.19000000 | | | | | |
| 1 | 4 | FXO | 6286.20000000 | | | | | |
| 1 | 3 | FXO | 6315.84000000 | | | | | |
| 1 | 4 | FXO | 6345.49000000 | | | | | |
| 1 | 4 | FXO | 6345.50000000 | | | | | |
| 1 | 2 | FXO | 6375.14000000 | | | | | |
| 1 | 2 | FXO | 6375.20000000 | | | | | |
| 1 | 1 | FXO | 6404.79000000 | | | | | |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 8 MILES NW OF, VACAVILLE, SOLANO, CA | 38.41516667, -122.11550000 | 846.100 m | | 46.000 m overall | |
| 2 | R | | 37.75547222, -122.45244444 | 254.200 m | | | |
| 3 | R | | 38.57822222, -121.49438889 | 5.800 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | | 71.3000 | | |
| 1 | 2 | R | | | | | | | |
| 1 | 3 | R | | | | | | | |
| 2 | 1 | T | | | V | | 202.1000 | | |
| 2 | 2 | R | | | | | | | |
| 2 | 3 | R | | | | | | | |
| 3 | 1 | T | | | H | | 71.3000 | | |
| 4 | 1 | T | | | H | | 202.1000 | | |
License history
| Date | File or call sign | Action |
|---|
| 1999-08-13 | WDU233 | LICCNV |
| 1997-12-19 | WDU233 | COR |
| 1997-10-29 | WDU233 | LICAN |
| 1991-04-01 | WDU233 | LIREN |
| 1990-04-03 | WDU233 | LIMOD |
| 1986-06-05 | WDU233 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 973843 | 2026-08-02 02:48:07 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WDU233 | ULS 973843 | 2026-08-02 02:48:07 |
| Status | C | ULS 973843 | 2026-08-02 02:48:07 |
| Service | CF | ULS 973843 | 2026-08-02 02:48:07 |
| Grant Date | 1991-04-01 | ULS 973843 | 2026-08-02 02:48:07 |
| Expiration Date | 2001-02-01 | ULS 973843 | 2026-08-02 02:48:07 |
| Cancellation Date | 1997-10-29 | ULS 973843 | 2026-08-02 02:48:07 |