Universal Licensing System
WDU420
SOUTHWESTERN BELL TELEPHONE COMPANY
License details
| ULS identifier | 973903 |
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| Call sign | WDU420 |
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| Radio service | CF |
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| Status | C |
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| Grant date | 1994-12-05 |
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| Expiration | 2000-08-01 |
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| Cancellation | 1998-07-22 |
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| Frequency range | 6256.5 - 6375.2 MHz (3 frequencies) |
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| Locations | 4 |
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| Representative location | CHAFFEE, SCOTT, MO |
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| Coordinates | 37.1794722, -89.6506389 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:46:52 |
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Licensee
| Name | SOUTHWESTERN BELL TELEPHONE COMPANY |
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| Applicant type | C |
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| FRN | 0002552123 |
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| Location | DALLAS, TX |
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| Address | 3 BELL PLZ RM 810.C12, DALLAS, TX, 752025399 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 2 | FXO | 6256.50000000 | | | | | |
| 1 | 3 | FXO | 6256.50000000 | | | | | |
| 1 | 1 | FXO | 6315.90000000 | | | | | |
| 1 | 2 | FXO | 6315.90000000 | | | | | |
| 1 | 3 | FXO | 6315.90000000 | | | | | |
| 1 | 2 | FXO | 6375.20000000 | | | | | |
| 1 | 3 | FXO | 6375.20000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 6256.50000000 | | 30M0A7W |
| 1 | 3 | 6256.50000000 | | 30M0A7W |
| 1 | 1 | 6315.90000000 | | 30M0A7W |
| 1 | 2 | 6315.90000000 | | 30M0A7W |
| 1 | 3 | 6315.90000000 | | 30M0A7W |
| 1 | 2 | 6375.20000000 | | 30M0A7W |
| 1 | 3 | 6375.20000000 | | 30M0A7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 0.2 MI N OF, CHAFFEE, SCOTT, MO | 37.17947222, -89.65063889 | 141.700 m | | 44.800 m overall | |
| 2 | R | | 36.90863889, -89.88202778 | 170.400 m | | | |
| 3 | R | | 37.33391667, -89.97369444 | 223.700 m | | | |
| 4 | R | | 37.30725000, -89.52869444 | 127.700 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | H | 39.9000 | 37.3000 | | |
| 1 | 2 | R | | | | 43.5000 | | | |
| 1 | 3 | R | | | | 43.2000 | | | |
| 1 | 4 | R | | | | 39.9000 | | | |
| 2 | 1 | T | | | H | 43.2000 | 214.5000 | | |
| 3 | 1 | T | | | V | 43.2000 | 301.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 1999-08-13 | WDU420 | LICCNV |
| 1998-07-22 | WDU420 | LICAN |
| 1998-03-20 | WDU420 | COR |
| 1994-12-05 | WDU420 | LIMOD |
| 1988-04-21 | WDU420 | APGRT |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 973903 | 2026-08-02 02:46:52 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WDU420 | ULS 973903 | 2026-08-02 02:46:52 |
| Status | C | ULS 973903 | 2026-08-02 02:46:52 |
| Service | CF | ULS 973903 | 2026-08-02 02:46:52 |
| Grant Date | 1994-12-05 | ULS 973903 | 2026-08-02 02:46:52 |
| Expiration Date | 2000-08-01 | ULS 973903 | 2026-08-02 02:46:52 |
| Cancellation Date | 1998-07-22 | ULS 973903 | 2026-08-02 02:46:52 |