Universal Licensing System
WLB271
MCI WORLDCOM NETWORK SERVICES INC
License details
| ULS identifier | 987756 |
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| Call sign | WLB271 |
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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 | 1996-11-12 |
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| Frequency range | 6197.24 - 11175 MHz (14 frequencies) |
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| Locations | 2 |
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| Coordinates | 37.1329167, -76.8302222 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:54 |
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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 |
|---|
| 1 | 2 | FXO | 6197.24000000 | | | | | |
| 1 | 3 | FXO | 6226.89000000 | | | | | |
| 1 | 2 | FXO | 6256.54000000 | | | | | |
| 1 | 3 | FXO | 6286.19000000 | | | | | |
| 1 | 2 | FXO | 6315.84000000 | | | | | |
| 1 | 3 | FXO | 6345.49000000 | | | | | |
| 1 | 3 | FXO | 6404.79000000 | | | | | |
| 1 | 1 | FXO | 10735.00000000 | | | | | |
| 1 | 4 | FXO | 10775.00000000 | | | | | |
| 1 | 4 | FXO | 10935.00000000 | | | | | |
| 1 | 1 | FXO | 10975.00000000 | | | | | |
| 1 | 4 | FXO | 11095.00000000 | | | | | |
| 1 | 1 | FXO | 11135.00000000 | | | | | |
| 1 | 4 | FXO | 11175.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 6197.24000000 | | 30M0F7W |
| 1 | 3 | 6226.89000000 | | 30M0F7W |
| 1 | 2 | 6256.54000000 | | 30M0F7W |
| 1 | 3 | 6286.19000000 | | 30M0F7W |
| 1 | 2 | 6315.84000000 | | 30M0F7W |
| 1 | 3 | 6345.49000000 | | 30M0F7W |
| 1 | 3 | 6404.79000000 | | 30M0F7W |
| 1 | 1 | 10735.00000000 | | 40M0F7W |
| 1 | 4 | 10775.00000000 | | 40M0F7W |
| 1 | 4 | 10935.00000000 | | 40M0F7W |
| 1 | 1 | 10975.00000000 | | 40M0F7W |
| 1 | 4 | 11095.00000000 | | 40M0F7W |
| 1 | 1 | 11135.00000000 | | 40M0F7W |
| 1 | 4 | 11175.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 0.5 MILES EAST OF, CARROLLTON, ISLE OF WIGHT, VA | 36.94569444, -76.55300000 | 6.100 m | | 86.300 m overall | |
| 2 | R | | 37.13291667, -76.83022222 | 36.900 m | | | |
| 3 | R | | 36.84875000, -76.28991667 | 3.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | H | 48.4000 | 114.6000 | | |
| 1 | 2 | R | | | | 43.2000 | | | |
| 1 | 3 | R | | | | 48.4000 | | | |
| 2 | 1 | T | | | H | 43.2000 | 310.2000 | | |
| 2 | 2 | R | | | | 43.2000 | | | |
| 2 | 3 | R | | | | 48.4000 | | | |
| 3 | 1 | T | | | V | 43.2000 | 310.2000 | | |
| 4 | 1 | T | | | V | 48.4000 | 114.6000 | | |
License history
| Date | File or call sign | Action |
|---|
| 1999-08-13 | WLB271 | LICCNV |
| 1996-11-12 | WLB271 | LICAN |
| 1991-04-01 | WLB271 | LIREN |
| 1990-04-20 | WLB271 | LIMOD |
| 1989-12-07 | WLB271 | LIMOD |
| 1988-07-07 | WLB271 | LIMOD |
| 1987-01-15 | WLB271 | LIMOD |
| 1985-09-26 | WLB271 | LIMOD |
| 1985-04-17 | WLB271 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 987756 | 2026-08-02 02:47:54 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WLB271 | ULS 987756 | 2026-08-02 02:47:54 |
| Status | C | ULS 987756 | 2026-08-02 02:47:54 |
| Service | CF | ULS 987756 | 2026-08-02 02:47:54 |
| Grant Date | 1991-04-01 | ULS 987756 | 2026-08-02 02:47:54 |
| Expiration Date | 2001-02-01 | ULS 987756 | 2026-08-02 02:47:54 |
| Cancellation Date | 1996-11-12 | ULS 987756 | 2026-08-02 02:47:54 |