Universal Licensing System
WLM778
SOUTHWESTERN BELL MOBILE SYSTEMS INC
License details
| ULS identifier | 994804 |
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| Call sign | WLM778 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 1996-03-11 |
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| Expiration | 2001-02-01 |
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| Cancellation | 1996-03-08 |
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| Frequency range | 18670 MHz |
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| Locations | 2 |
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| Representative location | ARLINGTON HEIGHTS, COOK, IL |
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| Coordinates | 42.0808333, -88.0033889 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:48 |
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Licensee
| Name | SOUTHWESTERN BELL MOBILE SYSTEMS INC |
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| Applicant type | C |
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| Location | DALLAS, TX |
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| Address | 17330 PRESTON ROAD STE 100A, DALLAS, TX, 75252 |
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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 | 18670.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
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| 1 | 1 | 18670.00000000 | | 20M0F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | 121 S WILE RD, ARLINGTON HEIGHTS, COOK, IL | 42.08083333, -88.00338889 | 217.900 m | | 33.200 m overall | |
| 2 | R | | 42.05750000, -88.05894444 | 223.700 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
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| 1 | 1 | T | | | V | 44.7000 | 240.6000 | | |
| 1 | 2 | R | | | | 44.7000 | | | |
License history
| Date | File or call sign | Action |
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| 1999-12-29 | WLM778 | COR |
| 1999-08-14 | WLM778 | LICCNV |
| 1996-03-11 | WLM778 | LIMOD |
| 1994-12-19 | WLM778 | LIMOD |
| 1994-10-24 | WLM778 | LIMOD |
| 1993-11-22 | WLM778 | LITRAN |
| 1987-01-22 | WLM778 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 994804 | 2026-08-02 02:47:48 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WLM778 | ULS 994804 | 2026-08-02 02:47:48 |
| Status | C | ULS 994804 | 2026-08-02 02:47:48 |
| Service | CF | ULS 994804 | 2026-08-02 02:47:48 |
| Grant Date | 1996-03-11 | ULS 994804 | 2026-08-02 02:47:48 |
| Expiration Date | 2001-02-01 | ULS 994804 | 2026-08-02 02:47:48 |
| Cancellation Date | 1996-03-08 | ULS 994804 | 2026-08-02 02:47:48 |