Universal Licensing System
WLK463
MCI WORLDCOM NETWORK SERVICES, INC
License details
| ULS identifier | 993165 |
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| Call sign | WLK463 |
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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 | 2001-06-07 |
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| Frequency range | 21425 MHz |
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| Locations | 2 |
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| Representative location | PHILADELPHIA, PHILADELPHIA, PA |
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| Coordinates | 39.9523333, -75.1585000 |
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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 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 | 21425.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 21425.00000000 | | 50M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 1100 MARKET STREET, PHILADELPHIA, PHILADELPHIA, PA | 39.95233333, -75.15850000 | 12.200 m | | 140.800 m overall | |
| 2 | R | | 39.96011111, -75.14905556 | 10.100 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | | V | 41.8000 | 43.1000 | | |
| 1 | 2 | R | | | | 41.8000 | | | |
License history
| Date | File or call sign | Action |
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| 2001-06-08 | WLK463 | LICAN |
| 2001-03-07 | WLK463 | LIAUA |
| 2001-01-30 | WLK463 | LIREN |
| 2000-11-13 | WLK463 | LETRES |
| 1999-08-14 | WLK463 | LICCNV |
| 1999-02-11 | WLK463 | LITRAN |
| 1994-08-22 | WLK463 | LIMOD |
| 1991-04-01 | WLK463 | LIREN |
| 1990-11-28 | WLK463 | LIMOD |
| 1990-10-01 | WLK463 | LIMOD |
| 1988-07-28 | WLK463 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 993165 | 2026-08-02 02:45:09 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WLK463 | ULS 993165 | 2026-08-02 02:45:09 |
| Status | C | ULS 993165 | 2026-08-02 02:45:09 |
| Service | CF | ULS 993165 | 2026-08-02 02:45:09 |
| Grant Date | 2001-01-30 | ULS 993165 | 2026-08-02 02:45:09 |
| Expiration Date | 2011-02-01 | ULS 993165 | 2026-08-02 02:45:09 |
| Cancellation Date | 2001-06-07 | ULS 993165 | 2026-08-02 02:45:09 |