Universal Licensing System
WLL777
MCI WORLDCOM NETWORK SERVICES INC
License details
| ULS identifier | 994139 |
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| Call sign | WLL777 |
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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 | 1996-10-16 |
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| Frequency range | 19280 - 19520 MHz (3 frequencies) |
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| Locations | 2 |
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| Representative location | ANN ARBOR, WASHTENAW, MI |
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| Coordinates | 42.2889167, -83.7146389 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:45 |
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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 |
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| 1 | 1 | FXO | 19280.00000000 | | | | | |
| 1 | 1 | FXO | 19400.00000000 | | | | | |
| 1 | 1 | FXO | 19520.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 19280.00000000 | | 40M0F7W |
| 1 | 1 | 19400.00000000 | | 40M0F7W |
| 1 | 1 | 19520.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 1075 BEAL ROAD, ANN ARBOR, WASHTENAW, MI | 42.28891667, -83.71463889 | 257.300 m | | 10.700 m overall | |
| 2 | R | | 42.27808333, -83.74241667 | 265.800 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 | 39.4000 | 242.3000 | | |
| 1 | 2 | R | | | | 39.4000 | | | |
License history
| Date | File or call sign | Action |
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| 1999-08-14 | WLL777 | LICCNV |
| 1996-10-16 | WLL777 | LICAN |
| 1991-04-01 | WLL777 | LIREN |
| 1990-07-19 | WLL777 | LIMOD |
| 1990-04-03 | WLL777 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 994139 | 2026-08-02 02:47:45 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WLL777 | ULS 994139 | 2026-08-02 02:47:45 |
| Status | C | ULS 994139 | 2026-08-02 02:47:45 |
| Service | CF | ULS 994139 | 2026-08-02 02:47:45 |
| Grant Date | 1991-04-01 | ULS 994139 | 2026-08-02 02:47:45 |
| Expiration Date | 2001-02-01 | ULS 994139 | 2026-08-02 02:47:45 |
| Cancellation Date | 1996-10-16 | ULS 994139 | 2026-08-02 02:47:45 |