Universal Licensing System
WRDU640
PIMA COUNTY ARIZONA
License details
| ULS identifier | 4182423 |
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| Call sign | WRDU640 |
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| Radio service | MW |
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| Status | A |
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| Grant date | 2019-07-23 |
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| Expiration | 2029-07-23 |
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| Frequency range | 6034.15 - 11405 MHz (2 frequencies) |
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| Locations | 3 |
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| Representative location | Tucson, PIMA, AZ |
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| Coordinates | 32.2187222, -110.7904167 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:44:47 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 6034.15000000 | | | | | |
| 1 | 2 | FXO | 11405.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 6034.15000000 | | 30M0D7W |
| 1 | 2 | 11405.00000000 | | 30M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 250 S Harrison Rd, Tucson, PIMA, AZ | 32.21872222, -110.79041667 | 829.600 m | POLE | 36.600 m structure / 36.600 m overall | |
| 2 | R | | 32.41538889, -110.71505556 | 2601.500 m | | | |
| 3 | R | | 32.29194444, -110.89444444 | 792.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | RFS SB6-W60C | | V | 39.4000 | 18.0000 | | |
| 1 | 2 | R | RFS SB6-W60C | | | 39.4000 | | | |
| 1 | 3 | R | RFS SB4-W100C | | | 40.1000 | | | |
| 2 | 1 | T | RFS SB4-W100C | | V | 40.1000 | 309.7000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2021-08-25 | WRDU640 | LIAUA |
| 2020-10-27 | WRDU640 | LETCNS |
| 2019-07-23 | WRDU640 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4182423 | 2026-08-02 02:44:47 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WRDU640 | ULS 4182423 | 2026-08-02 02:44:47 |
| Status | A | ULS 4182423 | 2026-08-02 02:44:47 |
| Service | MW | ULS 4182423 | 2026-08-02 02:44:47 |
| Grant Date | 2019-07-23 | ULS 4182423 | 2026-08-02 02:44:47 |
| Expiration Date | 2029-07-23 | ULS 4182423 | 2026-08-02 02:44:47 |