Universal Licensing System
WLB638
MCI WORLDCOM NETWORK SERVICES, INC
License details
| ULS identifier | 987946 |
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| Call sign | WLB638 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2001-01-23 |
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| Expiration | 2011-02-01 |
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| Cancellation | 2001-12-06 |
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| Frequency range | 11345 - 11665 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | GREENSBORO, GUILFORD, NC |
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| Coordinates | 36.0712222, -79.7908611 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:45:10 |
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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 |
|---|
| 1 | 1 | FXO | 11345.00000000 | | | | | |
| 1 | 1 | FXO | 11425.00000000 | | | | | |
| 1 | 1 | FXO | 11505.00000000 | | | | | |
| 1 | 1 | FXO | 11585.00000000 | | | | | |
| 1 | 1 | FXO | 11665.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 11345.00000000 | | 40M0F7W |
| 1 | 1 | 11425.00000000 | | 40M0F7W |
| 1 | 1 | 11505.00000000 | | 40M0F7W |
| 1 | 1 | 11585.00000000 | | 40M0F7W |
| 1 | 1 | 11665.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 101 WEST SYCAMORE STREET, GREENSBORO, GUILFORD, NC | 36.07122222, -79.79086111 | 253.900 m | | 30.800 m overall | |
| 2 | R | | 35.99150000, -79.85863889 | 249.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | 44.0000 | 214.7000 | | |
| 1 | 2 | R | | | | 44.0000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2001-12-07 | WLB638 | LICAN |
| 2001-03-07 | WLB638 | LIAUA |
| 2001-01-23 | WLB638 | LIREN |
| 2000-11-13 | WLB638 | LETRES |
| 1999-08-13 | WLB638 | LICCNV |
| 1999-02-11 | WLB638 | LITRAN |
| 1991-04-01 | WLB638 | LIREN |
| 1988-08-11 | WLB638 | LIMOD |
| 1988-07-28 | WLB638 | LIMOD |
| 1985-09-12 | WLB638 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 987946 | 2026-08-02 02:45:10 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WLB638 | ULS 987946 | 2026-08-02 02:45:10 |
| Status | C | ULS 987946 | 2026-08-02 02:45:10 |
| Service | CF | ULS 987946 | 2026-08-02 02:45:10 |
| Grant Date | 2001-01-23 | ULS 987946 | 2026-08-02 02:45:10 |
| Expiration Date | 2011-02-01 | ULS 987946 | 2026-08-02 02:45:10 |
| Cancellation Date | 2001-12-06 | ULS 987946 | 2026-08-02 02:45:10 |