Universal Licensing System
WLL839
MCI Communications Services, Inc.
License details
| ULS identifier | 994189 |
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| Call sign | WLL839 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 2001-02-13 |
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| Expiration | 2011-02-01 |
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| Cancellation | 2009-05-15 |
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| Frequency range | 11425 MHz |
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| Locations | 2 |
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| Representative location | PALO ALTO, SANTA CLARA, CA |
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| Coordinates | 37.4282500, -122.1771667 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:46:04 |
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Licensee
| Name | MCI Communications Services, Inc. |
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| Applicant type | C |
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| Location | Richardson, TX |
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| Address | 2400 N. Glenville Drive, Dept/Loc 71216/107, Richardson, TX, 75082 |
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| Phone | 9727296406 |
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| Email | [email protected] |
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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 | 11425.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 11425.00000000 | | 40M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | GEORGE FORSYTHE HALL, PALO ALTO, SANTA CLARA, CA | 37.42825000, -122.17716667 | 32.000 m | | 18.300 m overall | |
| 2 | R | | 37.44880556, -122.15938889 | 14.900 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | V | 40.4000 | 34.6000 | | |
| 1 | 2 | R | | | | 40.4000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2009-05-16 | WLL839 | LICAN |
| 2006-02-02 | WLL839 | LIASS |
| 2006-01-06 | WLL839 | LITRAN |
| 2005-06-08 | WLL839 | LIAUA |
| 2005-06-07 | WLL839 | ESUAPR |
| 2005-05-02 | WLL839 | ESCAPR |
| 2005-03-11 | WLL839 | ESUAPR |
| 2004-04-20 | WLL839 | LIASS |
| 2003-02-12 | WLL839 | LIAUA |
| 2003-01-15 | WLL839 | LIAUA |
| 2003-01-14 | WLL839 | LIAUA |
| 2002-07-21 | WLL839 | LIASS |
| 2001-03-07 | WLL839 | LIAUA |
| 2001-02-13 | WLL839 | LIREN |
| 2000-11-13 | WLL839 | LETRES |
| 1999-08-14 | WLL839 | LICCNV |
| 1999-02-11 | WLL839 | LITRAN |
| 1991-06-26 | WLL839 | LIMOD |
| 1991-04-01 | WLL839 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 994189 | 2026-08-02 02:46:04 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WLL839 | ULS 994189 | 2026-08-02 02:46:04 |
| Status | C | ULS 994189 | 2026-08-02 02:46:04 |
| Service | CF | ULS 994189 | 2026-08-02 02:46:04 |
| Grant Date | 2001-02-13 | ULS 994189 | 2026-08-02 02:46:04 |
| Expiration Date | 2011-02-01 | ULS 994189 | 2026-08-02 02:46:04 |
| Cancellation Date | 2009-05-15 | ULS 994189 | 2026-08-02 02:46:04 |