Universal Licensing System
WLB603
MCI WORLDCOM NETWORK SERVICES, INC
License details
| ULS identifier | 987914 |
|---|
| Call sign | WLB603 |
|---|
| Radio service | CF |
|---|
| Status | C |
|---|
| Grant date | 2001-01-23 |
|---|
| Expiration | 2011-02-01 |
|---|
| Cancellation | 2002-05-15 |
|---|
| Frequency range | 3770 - 6404.79 MHz (18 frequencies) |
|---|
| Locations | 2 |
|---|
| Representative location | CASTLE ROCK, COWLITZ, WA |
|---|
| Coordinates | 46.2767778, -122.8723333 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-09-14 16:59:04 |
|---|
Licensee
| Name | MCI WORLDCOM NETWORK SERVICES, INC |
|---|
| Applicant type | C |
|---|
| Location | RICHARDSON, TX |
|---|
| Address | 2270 LAKESIDE BLVD 2865/642, RICHARDSON, TX, 75082 |
|---|
| Phone | 9726565287 |
|---|
| Email | [email protected] |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 3770.00000000 | | | | | |
| 1 | 2 | FXO | 3770.00000000 | | | | | |
| 1 | 1 | FXO | 3850.00000000 | | | | | |
| 1 | 2 | FXO | 3850.00000000 | | | | | |
| 1 | 3 | FXO | 3910.00000000 | | | | | |
| 1 | 4 | FXO | 3910.00000000 | | | | | |
| 1 | 1 | FXO | 3930.00000000 | | | | | |
| 1 | 2 | FXO | 3930.00000000 | | | | | |
| 1 | 3 | FXO | 3990.00000000 | | | | | |
| 1 | 4 | FXO | 3990.00000000 | | | | | |
| 1 | 1 | FXO | 4010.00000000 | | | | | |
| 1 | 2 | FXO | 4010.00000000 | | | | | |
| 1 | 3 | FXO | 4070.00000000 | | | | | |
| 1 | 4 | FXO | 4070.00000000 | | | | | |
| 1 | 1 | FXO | 4090.00000000 | | | | | |
| 1 | 2 | FXO | 4090.00000000 | | | | | |
| 1 | 3 | FXO | 4150.00000000 | | | | | |
| 1 | 4 | FXO | 4150.00000000 | | | | | |
| 1 | 1 | FXO | 4170.00000000 | | | | | |
| 1 | 2 | FXO | 4170.00000000 | | | | | |
| 1 | 3 | FXO | 6197.24000000 | | | | | |
| 1 | 4 | FXO | 6197.24000000 | | | | | |
| 1 | 1 | FXO | 6226.89000000 | | | | | |
| 1 | 2 | FXO | 6226.89000000 | | | | | |
| 1 | 3 | FXO | 6256.54000000 | | | | | |
| 1 | 4 | FXO | 6256.54000000 | | | | | |
| 1 | 1 | FXO | 6286.19000000 | | | | | |
| 1 | 2 | FXO | 6286.19000000 | | | | | |
| 1 | 3 | FXO | 6315.84000000 | | | | | |
| 1 | 4 | FXO | 6315.84000000 | | | | | |
| 1 | 1 | FXO | 6345.49000000 | | | | | |
| 1 | 2 | FXO | 6345.49000000 | | | | | |
| 1 | 3 | FXO | 6375.14000000 | | | | | |
| 1 | 4 | FXO | 6375.14000000 | | | | | |
| 1 | 1 | FXO | 6404.79000000 | | | | | |
| 1 | 2 | FXO | 6404.79000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 3 | 6197.24000000 | | 30M0D7W |
| 1 | 4 | 6197.24000000 | | 30M0D7W |
| 1 | 1 | 6226.89000000 | | 30M0D7W |
| 1 | 2 | 6226.89000000 | | 30M0D7W |
| 1 | 3 | 6256.54000000 | | 30M0D7W |
| 1 | 4 | 6256.54000000 | | 30M0D7W |
| 1 | 1 | 6286.19000000 | | 30M0D7W |
| 1 | 2 | 6286.19000000 | | 30M0D7W |
| 1 | 3 | 6315.84000000 | | 30M0D7W |
| 1 | 4 | 6315.84000000 | | 30M0D7W |
| 1 | 1 | 6345.49000000 | | 30M0D7W |
| 1 | 2 | 6345.49000000 | | 30M0D7W |
| 1 | 3 | 6375.14000000 | | 30M0D7W |
| 1 | 4 | 6375.14000000 | | 30M0D7W |
| 1 | 1 | 6404.79000000 | | 30M0D7W |
| 1 | 2 | 6404.79000000 | | 30M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 1.5 MI E OF, CASTLE ROCK, COWLITZ, WA | 46.27677778, -122.87233333 | 305.400 m | | 57.300 m overall | |
| 2 | R | | 46.84258333, -122.76400000 | 449.600 m | | | |
| 3 | R | | 45.97511111, -122.90008333 | 263.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | H | 39.2000 | 7.5000 | | |
| 1 | 2 | R | | | | 39.2000 | | | |
| 1 | 3 | R | | | | 39.6000 | | | |
| 2 | 1 | T | | | H | 39.6000 | 183.7000 | | |
| 2 | 2 | R | | | | 39.2000 | | | |
| 2 | 3 | R | | | | 39.6000 | | | |
| 3 | 1 | T | | | V | 39.2000 | 7.5000 | | |
| 4 | 1 | T | | | V | 39.6000 | 183.7000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2002-05-16 | WLB603 | LICAN |
| 2001-03-07 | WLB603 | LIAUA |
| 2001-01-23 | WLB603 | LIREN |
| 2000-11-13 | WLB603 | LETRES |
| 1999-08-13 | WLB603 | LICCNV |
| 1999-07-02 | WLB603 | COR |
| 1999-03-29 | WLB603 | COR |
| 1999-02-11 | WLB603 | LITRAN |
| 1991-04-01 | WLB603 | LIREN |
| 1990-04-30 | WLB603 | LIMOD |
| 1990-04-03 | WLB603 | LIMOD |
| 1988-08-04 | WLB603 | LIMOD |
| 1986-01-30 | WLB603 | LIMOD |
| 1985-09-26 | WLB603 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 987914 | 2026-08-31 20:51:05 | Source Primary |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Applicant Name | MCI WORLDCOM NETWORK SERVICES, INC | ULS 987914 | 2026-08-31 20:58:56 |
| Call Sign | WLB603 | ULS 987914 | 2026-08-31 20:58:56 |
| Cancellation Date | 2002-05-15 | ULS 987914 | 2026-08-31 20:58:56 |
| Contact Name | 9726565287 | ULS 987914 | 2026-08-31 20:58:56 |
| Description | 9121344 | ULS 987914 | 2026-08-31 20:58:56 |
| Expiration Date | 2011-02-01 | ULS 987914 | 2026-08-31 20:58:56 |
| Filed Date | 2001-01-23 | ULS 987914 | 2026-08-31 20:58:56 |
| Grant Date | 2001-01-23 | ULS 987914 | 2026-08-31 20:58:56 |
| Service | CF | ULS 987914 | 2026-08-31 20:58:56 |
| Source Archive | l_micro.zip | ULS 987914 | 2026-08-31 20:58:56 |
| Status | C | ULS 987914 | 2026-08-31 20:58:56 |