Universal Licensing System
WLB249
MCI WORLDCOM NETWORK SERVICES INC
License details
| ULS identifier | 987743 |
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| Call sign | WLB249 |
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| Radio service | CF |
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| Status | E |
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| Grant date | 1991-04-01 |
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| Expiration | 2001-02-01 |
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| Cancellation | 2001-05-06 |
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| Frequency range | 11645 MHz |
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| Locations | 2 |
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| Representative location | HAYWARD, ALAMEDA, CA |
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| Coordinates | 37.6426944, -122.1355000 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-09-14 16:58:41 |
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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 | 11645.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 11645.00000000 | | 40M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 21350 CABOT BLVD, HAYWARD, ALAMEDA, CA | 37.64269444, -122.13550000 | 2.700 m | | 22.300 m overall | |
| 2 | R | | 37.53463889, -122.33188889 | 150.300 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 | 46.5000 | 235.4000 | | |
| 1 | 2 | R | | | | 46.5000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2001-05-06 | WLB249 | LIEXP |
| 2000-11-13 | WLB249 | LETRES |
| 1999-08-13 | WLB249 | LICCNV |
| 1999-02-11 | WLB249 | LITRAN |
| 1991-04-01 | WLB249 | LIREN |
| 1990-04-11 | WLB249 | LIMOD |
| 1990-03-29 | WLB249 | LIMOD |
| 1986-03-31 | WLB249 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 987743 | 2026-08-31 20:51:05 | Source Primary |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Applicant Name | MCI WORLDCOM NETWORK SERVICES INC | ULS 987743 | 2026-08-31 20:59:03 |
| Call Sign | WLB249 | ULS 987743 | 2026-08-31 20:59:03 |
| Cancellation Date | 2001-05-06 | ULS 987743 | 2026-08-31 20:59:03 |
| Description | 9713940 | ULS 987743 | 2026-08-31 20:59:03 |
| Expiration Date | 2001-02-01 | ULS 987743 | 2026-08-31 20:59:03 |
| Filed Date | 1991-04-01 | ULS 987743 | 2026-08-31 20:59:03 |
| Grant Date | 1991-04-01 | ULS 987743 | 2026-08-31 20:59:03 |
| Service | CF | ULS 987743 | 2026-08-31 20:59:03 |
| Source Archive | l_micro.zip | ULS 987743 | 2026-08-31 20:59:03 |
| Status | E | ULS 987743 | 2026-08-31 20:59:03 |