Universal Licensing System
WLL859
MCI WORLDCOM NETWORK SERVICES INC
License details
| ULS identifier | 994206 |
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| Call sign | WLL859 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 1991-08-22 |
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| Expiration | 2001-02-01 |
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| Cancellation | 2000-03-15 |
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| Frequency range | 17840 - 17960 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | CAMBRIDGE, MIDDLESEX, MA |
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| Coordinates | 42.3542500, -71.1044722 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:45:09 |
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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 | 17840.00000000 | | | | | |
| 1 | 1 | FXO | 17960.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 17840.00000000 | | 40M0F7W |
| 1 | 1 | 17960.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 565 MEMORIAL DRIVE, CAMBRIDGE, MIDDLESEX, MA | 42.35425000, -71.10447222 | 4.900 m | | 11.600 m overall | |
| 2 | R | | 42.34730556, -71.08197222 | 6.100 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | | H | 39.4000 | 112.6000 | | |
| 1 | 2 | R | | | | 39.4000 | | | |
License history
| Date | File or call sign | Action |
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| 2000-03-16 | WLL859 | LICAN |
| 1999-08-14 | WLL859 | LICCNV |
| 1999-02-11 | WLL859 | LITRAN |
| 1997-05-23 | WLL859 | COR |
| 1997-05-21 | WLL859 | COR |
| 1991-08-22 | WLL859 | LIMOD |
| 1990-10-01 | WLL859 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 994206 | 2026-08-02 02:45:09 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WLL859 | ULS 994206 | 2026-08-02 02:45:09 |
| Status | C | ULS 994206 | 2026-08-02 02:45:09 |
| Service | CF | ULS 994206 | 2026-08-02 02:45:09 |
| Grant Date | 1991-08-22 | ULS 994206 | 2026-08-02 02:45:09 |
| Expiration Date | 2001-02-01 | ULS 994206 | 2026-08-02 02:45:09 |
| Cancellation Date | 2000-03-15 | ULS 994206 | 2026-08-02 02:45:09 |