Universal Licensing System
WLB637
MCI WorldCom Network Services, Inc. (debtor-in-possession)
License details
| ULS identifier | 987945 |
|---|
| Call sign | WLB637 |
|---|
| Radio service | CF |
|---|
| Status | C |
|---|
| Grant date | 2001-01-23 |
|---|
| Expiration | 2011-02-01 |
|---|
| Cancellation | 2003-05-09 |
|---|
| Frequency range | 3810 - 6123.1 MHz (9 frequencies) |
|---|
| Locations | 4 |
|---|
| Representative location | GROOMETOWN, GUILFORD, NC |
|---|
| Coordinates | 35.9915000, -79.8586389 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-02 02:46:06 |
|---|
Licensee
| Name | MCI WorldCom Network Services, Inc. (debtor-in-possession) |
|---|
| Applicant type | C |
|---|
| Location | RICHARDSON, TX |
|---|
| Address | 2400 NORTH GLENVILLE 42955/107, 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 | 2 | FXO | 3710.00000000 | | | | | |
| 1 | 3 | FXO | 3710.00000000 | | | | | |
| 1 | 4 | FXO | 3730.00000000 | | | | | |
| 1 | 5 | FXO | 3730.00000000 | | | | | |
| 1 | 2 | FXO | 3790.00000000 | | | | | |
| 1 | 3 | FXO | 3790.00000000 | | | | | |
| 1 | 4 | FXO | 3810.00000000 | | | | | |
| 1 | 5 | FXO | 3810.00000000 | | | | | |
| 1 | 2 | FXO | 3870.00000000 | | | | | |
| 1 | 3 | FXO | 3870.00000000 | | | | | |
| 1 | 4 | FXO | 3890.00000000 | | | | | |
| 1 | 5 | FXO | 3890.00000000 | | | | | |
| 1 | 2 | FXO | 3950.00000000 | | | | | |
| 1 | 3 | FXO | 3950.00000000 | | | | | |
| 1 | 4 | FXO | 3970.00000000 | | | | | |
| 1 | 5 | FXO | 3970.00000000 | | | | | |
| 1 | 2 | FXO | 4030.00000000 | | | | | |
| 1 | 3 | FXO | 4030.00000000 | | | | | |
| 1 | 4 | FXO | 4050.00000000 | | | | | |
| 1 | 5 | FXO | 4050.00000000 | | | | | |
| 1 | 2 | FXO | 4110.00000000 | | | | | |
| 1 | 3 | FXO | 4110.00000000 | | | | | |
| 1 | 4 | FXO | 4130.00000000 | | | | | |
| 1 | 5 | FXO | 4130.00000000 | | | | | |
| 1 | 4 | FXO | 5945.20000000 | | | | | |
| 1 | 5 | FXO | 5945.20000000 | | | | | |
| 1 | 3 | FXO | 5974.85000000 | | | | | |
| 1 | 4 | FXO | 6004.50000000 | | | | | |
| 1 | 5 | FXO | 6004.50000000 | | | | | |
| 1 | 3 | FXO | 6034.15000000 | | | | | |
| 1 | 4 | FXO | 6063.80000000 | | | | | |
| 1 | 5 | FXO | 6063.80000000 | | | | | |
| 1 | 3 | FXO | 6093.45000000 | | | | | |
| 1 | 4 | FXO | 6123.10000000 | | | | | |
| 1 | 5 | FXO | 6123.10000000 | | | | | |
| 1 | 3 | FXO | 6152.75000000 | | | | | |
| 1 | 1 | FXO | 10735.00000000 | | | | | |
| 1 | 1 | FXO | 10815.00000000 | | | | | |
| 1 | 1 | FXO | 10895.00000000 | | | | | |
| 1 | 3 | FXO | 10895.00000000 | | | | | |
| 1 | 1 | FXO | 10975.00000000 | | | | | |
| 1 | 1 | FXO | 11055.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 3710.00000000 | | 20M0F7W |
| 1 | 3 | 3710.00000000 | | 20M0F7W |
| 1 | 4 | 3730.00000000 | | 20M0F7W |
| 1 | 5 | 3730.00000000 | | 20M0F7W |
| 1 | 2 | 3790.00000000 | | 20M0F7W |
| 1 | 3 | 3790.00000000 | | 20M0F7W |
| 1 | 4 | 3810.00000000 | | 20M0F7W |
| 1 | 5 | 3810.00000000 | | 20M0F7W |
| 1 | 2 | 3870.00000000 | | 20M0F7W |
| 1 | 3 | 3870.00000000 | | 20M0F7W |
| 1 | 4 | 3890.00000000 | | 20M0F7W |
| 1 | 5 | 3890.00000000 | | 20M0F7W |
| 1 | 2 | 3950.00000000 | | 20M0F7W |
| 1 | 3 | 3950.00000000 | | 20M0F7W |
| 1 | 4 | 3970.00000000 | | 20M0F7W |
| 1 | 5 | 3970.00000000 | | 20M0F7W |
| 1 | 2 | 4030.00000000 | | 20M0F7W |
| 1 | 3 | 4030.00000000 | | 20M0F7W |
| 1 | 4 | 4050.00000000 | | 20M0F7W |
| 1 | 5 | 4050.00000000 | | 20M0F7W |
| 1 | 2 | 4110.00000000 | | 20M0F7W |
| 1 | 3 | 4110.00000000 | | 20M0F7W |
| 1 | 4 | 4130.00000000 | | 20M0F7W |
| 1 | 5 | 4130.00000000 | | 20M0F7W |
| 1 | 4 | 5945.20000000 | | 30M0F7W |
| 1 | 5 | 5945.20000000 | | 30M0F7W |
| 1 | 3 | 5974.85000000 | | 30M0F7W |
| 1 | 4 | 6004.50000000 | | 30M0F7W |
| 1 | 5 | 6004.50000000 | | 30M0F7W |
| 1 | 3 | 6034.15000000 | | 30M0F7W |
| 1 | 4 | 6063.80000000 | | 30M0F7W |
| 1 | 5 | 6063.80000000 | | 30M0F7W |
| 1 | 3 | 6093.45000000 | | 30M0F7W |
| 1 | 4 | 6123.10000000 | | 30M0F7W |
| 1 | 5 | 6123.10000000 | | 30M0F7W |
| 1 | 3 | 6152.75000000 | | 30M0F7W |
| 1 | 1 | 10735.00000000 | | 40M0F7W |
| 1 | 1 | 10815.00000000 | | 40M0F7W |
| 1 | 1 | 10895.00000000 | | 40M0F7W |
| 1 | 3 | 10895.00000000 | | 40M0F7W |
| 1 | 1 | 10975.00000000 | | 40M0F7W |
| 1 | 1 | 11055.00000000 | | 40M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 0.5 MILES EAST OF, GROOMETOWN, GUILFORD, NC | 35.99150000, -79.85863889 | 249.000 m | | 75.600 m overall | |
| 2 | R | | 35.94594444, -79.43611111 | 291.100 m | | | |
| 3 | R | | 36.01261111, -80.09919444 | 277.700 m | | | |
| 4 | R | | 36.07122222, -79.79086111 | 253.900 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | 44.0000 | 34.6000 | | |
| 1 | 2 | R | | | | 39.6000 | | | |
| 1 | 3 | R | | | | 36.8000 | | | |
| 1 | 4 | R | | | | 44.0000 | | | |
| 2 | 1 | T | | | V | 39.6000 | 97.4000 | | |
| 2 | 2 | R | | | | 39.6000 | | | |
| 2 | 3 | R | | | | 36.8000 | | | |
| 3 | 1 | T | | | V | 39.8000 | 276.2000 | | |
| 4 | 1 | T | | | H | 39.6000 | 97.4000 | | |
| 5 | 1 | T | | | H | 39.8000 | 276.2000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2003-05-10 | WLB637 | LICAN |
| 2003-02-12 | WLB637 | LIAUA |
| 2003-01-15 | WLB637 | LIAUA |
| 2003-01-14 | WLB637 | LIAUA |
| 2002-07-21 | WLB637 | LIASS |
| 2001-03-07 | WLB637 | LIAUA |
| 2001-01-23 | WLB637 | LIREN |
| 2000-11-13 | WLB637 | LETRES |
| 1999-08-13 | WLB637 | LICCNV |
| 1999-03-29 | WLB637 | COR |
| 1999-02-11 | WLB637 | LITRAN |
| 1991-04-01 | WLB637 | LIREN |
| 1990-02-01 | WLB637 | LIMOD |
| 1988-08-11 | WLB637 | LIMOD |
| 1988-07-28 | WLB637 | LIMOD |
| 1988-07-07 | WLB637 | LIMOD |
| 1986-01-30 | WLB637 | LIMOD |
| 1985-09-12 | WLB637 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 987945 | 2026-08-02 02:46:06 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WLB637 | ULS 987945 | 2026-08-02 02:46:06 |
| Status | C | ULS 987945 | 2026-08-02 02:46:06 |
| Service | CF | ULS 987945 | 2026-08-02 02:46:06 |
| Grant Date | 2001-01-23 | ULS 987945 | 2026-08-02 02:46:06 |
| Expiration Date | 2011-02-01 | ULS 987945 | 2026-08-02 02:46:06 |
| Cancellation Date | 2003-05-09 | ULS 987945 | 2026-08-02 02:46:06 |