Universal Licensing System
WLB427
MCI WorldCom Network Services, Inc.
License details
| ULS identifier | 987876 |
|---|
| Call sign | WLB427 |
|---|
| Radio service | CF |
|---|
| Status | C |
|---|
| Grant date | 2001-01-23 |
|---|
| Expiration | 2011-02-01 |
|---|
| Cancellation | 2004-08-16 |
|---|
| Frequency range | 3850 - 6404.79 MHz (9 frequencies) |
|---|
| Locations | 3 |
|---|
| Representative location | ROCKWELL, ROWAN, NC |
|---|
| Coordinates | 35.5384722, -80.4792222 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-02 02:45:09 |
|---|
Licensee
| Name | MCI WorldCom Network Services, Inc. |
|---|
| Applicant type | C |
|---|
| Location | Richardson, TX |
|---|
| Address | 2400 North Glenville, Richardson, TX, 75082 |
|---|
| Phone | 9727296406 |
|---|
| Email | [email protected] |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 3750.00000000 | | | | | |
| 1 | 2 | FXO | 3750.00000000 | | | | | |
| 1 | 3 | FXO | 3770.00000000 | | | | | |
| 1 | 4 | FXO | 3770.00000000 | | | | | |
| 1 | 1 | FXO | 3830.00000000 | | | | | |
| 1 | 2 | FXO | 3830.00000000 | | | | | |
| 1 | 3 | FXO | 3850.00000000 | | | | | |
| 1 | 4 | FXO | 3850.00000000 | | | | | |
| 1 | 1 | FXO | 3910.00000000 | | | | | |
| 1 | 2 | FXO | 3910.00000000 | | | | | |
| 1 | 3 | FXO | 3930.00000000 | | | | | |
| 1 | 4 | FXO | 3930.00000000 | | | | | |
| 1 | 1 | FXO | 3990.00000000 | | | | | |
| 1 | 2 | FXO | 3990.00000000 | | | | | |
| 1 | 3 | FXO | 4010.00000000 | | | | | |
| 1 | 4 | FXO | 4010.00000000 | | | | | |
| 1 | 1 | FXO | 4070.00000000 | | | | | |
| 1 | 2 | FXO | 4070.00000000 | | | | | |
| 1 | 3 | FXO | 4090.00000000 | | | | | |
| 1 | 4 | FXO | 4090.00000000 | | | | | |
| 1 | 1 | FXO | 4150.00000000 | | | | | |
| 1 | 2 | FXO | 4150.00000000 | | | | | |
| 1 | 3 | FXO | 4170.00000000 | | | | | |
| 1 | 4 | FXO | 4170.00000000 | | | | | |
| 1 | 2 | FXO | 6197.24000000 | | | | | |
| 1 | 3 | FXO | 6197.24000000 | | | | | |
| 1 | 1 | FXO | 6226.89000000 | | | | | |
| 1 | 4 | FXO | 6226.89000000 | | | | | |
| 1 | 2 | FXO | 6256.54000000 | | | | | |
| 1 | 3 | FXO | 6256.54000000 | | | | | |
| 1 | 1 | FXO | 6286.19000000 | | | | | |
| 1 | 4 | FXO | 6286.19000000 | | | | | |
| 1 | 2 | FXO | 6315.84000000 | | | | | |
| 1 | 3 | FXO | 6315.84000000 | | | | | |
| 1 | 1 | FXO | 6345.49000000 | | | | | |
| 1 | 4 | FXO | 6345.49000000 | | | | | |
| 1 | 2 | FXO | 6375.14000000 | | | | | |
| 1 | 3 | FXO | 6375.14000000 | | | | | |
| 1 | 1 | FXO | 6404.79000000 | | | | | |
| 1 | 4 | FXO | 6404.79000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 3750.00000000 | | 20M0F7W |
| 1 | 2 | 3750.00000000 | | 20M0D7W |
| 1 | 3 | 3770.00000000 | | 20M0F7W |
| 1 | 4 | 3770.00000000 | | 20M0D7W |
| 1 | 1 | 3830.00000000 | | 20M0F7W |
| 1 | 2 | 3830.00000000 | | 20M0D7W |
| 1 | 3 | 3850.00000000 | | 20M0F7W |
| 1 | 4 | 3850.00000000 | | 20M0D7W |
| 1 | 1 | 3910.00000000 | | 20M0F7W |
| 1 | 2 | 3910.00000000 | | 20M0D7W |
| 1 | 3 | 3930.00000000 | | 20M0F7W |
| 1 | 4 | 3930.00000000 | | 20M0D7W |
| 1 | 1 | 3990.00000000 | | 20M0F7W |
| 1 | 2 | 3990.00000000 | | 20M0D7W |
| 1 | 3 | 4010.00000000 | | 20M0F7W |
| 1 | 4 | 4010.00000000 | | 20M0D7W |
| 1 | 1 | 4070.00000000 | | 20M0F7W |
| 1 | 2 | 4070.00000000 | | 20M0D7W |
| 1 | 3 | 4090.00000000 | | 20M0F7W |
| 1 | 4 | 4090.00000000 | | 20M0D7W |
| 1 | 1 | 4150.00000000 | | 20M0F7W |
| 1 | 2 | 4150.00000000 | | 20M0D7W |
| 1 | 3 | 4170.00000000 | | 20M0F7W |
| 1 | 4 | 4170.00000000 | | 20M0D7W |
| 1 | 2 | 6197.24000000 | | 30M0D7W |
| 1 | 3 | 6197.24000000 | | 30M0F7W |
| 1 | 1 | 6226.89000000 | | 30M0F7W |
| 1 | 4 | 6226.89000000 | | 30M0D7W |
| 1 | 2 | 6256.54000000 | | 30M0D7W |
| 1 | 3 | 6256.54000000 | | 30M0F7W |
| 1 | 1 | 6286.19000000 | | 30M0F7W |
| 1 | 4 | 6286.19000000 | | 30M0D7W |
| 1 | 2 | 6315.84000000 | | 30M0D7W |
| 1 | 3 | 6315.84000000 | | 30M0F7W |
| 1 | 1 | 6345.49000000 | | 30M0F7W |
| 1 | 4 | 6345.49000000 | | 30M0D7W |
| 1 | 2 | 6375.14000000 | | 30M0D7W |
| 1 | 3 | 6375.14000000 | | 30M0F7W |
| 1 | 1 | 6404.79000000 | | 30M0F7W |
| 1 | 4 | 6404.79000000 | | 30M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 3 MI SW OF, ROCKWELL, ROWAN, NC | 35.53847222, -80.47922222 | 242.600 m | | 93.900 m overall | |
| 2 | R | | 35.76261111, -80.13808333 | 331.600 m | | | |
| 3 | R | | 35.41677778, -80.91727778 | 242.600 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | H | 39.8000 | 51.1000 | | |
| 1 | 2 | R | | | | 39.9000 | | | |
| 1 | 3 | R | | | | 39.8000 | | | |
| 2 | 1 | T | | | V | 39.8000 | 251.4000 | | |
| 2 | 2 | R | | | | 39.9000 | | | |
| 2 | 3 | R | | | | 39.8000 | | | |
| 3 | 1 | T | | | V | 39.8000 | 51.1000 | | |
| 4 | 1 | T | | | H | 39.8000 | 251.4000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2004-08-17 | WLB427 | LICAN |
| 2004-04-20 | WLB427 | LIASS |
| 2003-02-12 | WLB427 | LIAUA |
| 2003-01-15 | WLB427 | LIAUA |
| 2003-01-14 | WLB427 | LIAUA |
| 2002-07-21 | WLB427 | LIASS |
| 2001-03-07 | WLB427 | LIAUA |
| 2001-01-23 | WLB427 | LIREN |
| 2000-11-13 | WLB427 | LETRES |
| 1999-08-13 | WLB427 | LICCNV |
| 1999-03-29 | WLB427 | COR |
| 1999-02-11 | WLB427 | LITRAN |
| 1994-02-02 | WLB427 | LIMOD |
| 1991-04-01 | WLB427 | LIREN |
| 1990-02-22 | WLB427 | LIMOD |
| 1989-01-24 | WLB427 | LIMOD |
| 1988-07-28 | WLB427 | LIMOD |
| 1987-03-26 | WLB427 | LIMOD |
| 1986-05-08 | WLB427 | LIMOD |
| 1986-02-06 | WLB427 | LIMOD |
| 1985-06-26 | WLB427 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 987876 | 2026-08-02 02:45:09 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WLB427 | ULS 987876 | 2026-08-02 02:45:09 |
| Status | C | ULS 987876 | 2026-08-02 02:45:09 |
| Service | CF | ULS 987876 | 2026-08-02 02:45:09 |
| Grant Date | 2001-01-23 | ULS 987876 | 2026-08-02 02:45:09 |
| Expiration Date | 2011-02-01 | ULS 987876 | 2026-08-02 02:45:09 |
| Cancellation Date | 2004-08-16 | ULS 987876 | 2026-08-02 02:45:09 |