Universal Licensing System
WLL778
MCI WORLDCOM NETWORK SERVICES, INC
License details
| ULS identifier | 994140 |
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| Call sign | WLL778 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2001-01-30 |
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| Expiration | 2011-02-01 |
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| Cancellation | 2001-12-19 |
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| Frequency range | 5974.85 - 6152.75 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | TUCSON FDR, PIMA, AZ |
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| Coordinates | 32.2011667, -110.8239722 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:45:12 |
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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 BLVD 2865/642, RICHARDSON, TX, 75082 |
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| Phone | 9726565287 |
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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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| 1 | 1 | FXO | 5974.85000000 | | | | | |
| 1 | 1 | FXO | 6152.75000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 5974.85000000 | | 30M0D7W |
| 1 | 1 | 6152.75000000 | | 30M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 1650 RESEARCH LOOP, TUCSON FDR, PIMA, AZ | 32.20116667, -110.82397222 | 799.500 m | | 14.600 m overall | |
| 2 | R | | 32.41561111, -110.71425000 | 2605.400 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | | V | 41.3000 | 23.5000 | | |
| 1 | 2 | R | | | | 41.3000 | | | |
License history
| Date | File or call sign | Action |
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| 2001-12-20 | WLL778 | LICAN |
| 2001-03-07 | WLL778 | LIAUA |
| 2001-01-30 | WLL778 | LIREN |
| 2000-11-13 | WLL778 | LETRES |
| 1999-08-14 | WLL778 | LICCNV |
| 1999-02-11 | WLL778 | LITRAN |
| 1991-04-01 | WLL778 | LIREN |
| 1990-07-18 | WLL778 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 994140 | 2026-08-02 02:45:12 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WLL778 | ULS 994140 | 2026-08-02 02:45:12 |
| Status | C | ULS 994140 | 2026-08-02 02:45:12 |
| Service | CF | ULS 994140 | 2026-08-02 02:45:12 |
| Grant Date | 2001-01-30 | ULS 994140 | 2026-08-02 02:45:12 |
| Expiration Date | 2011-02-01 | ULS 994140 | 2026-08-02 02:45:12 |
| Cancellation Date | 2001-12-19 | ULS 994140 | 2026-08-02 02:45:12 |