Universal Licensing System
WRDD901
Aviation Spectrum Resources Inc
License details
| ULS identifier | 4146123 |
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| Call sign | WRDD901 |
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| Radio service | AF |
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| Status | A |
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| Grant date | 2019-04-04 |
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| Expiration | 2029-04-04 |
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| Frequency range | 131.725 - 136.975 MHz (3 frequencies) |
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| Locations | 1 |
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| Representative location | Grand Canyon, COCONINO, AZ |
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| Coordinates | 35.6486111, -112.1411111 |
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| Source archive | l_coast.zip |
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| Dataset refreshed | 2026-08-02 02:08:35 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FA | 131.72500000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 136.80000000 | | | 25.000000 | | HL |
| 1 | 1 | FA | 136.97500000 | | | 25.000000 | | HL |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 131.72500000 | | 13K0A2D |
| 1 | 1 | 136.80000000 | | 14K0G1D |
| 1 | 1 | 136.97500000 | | 14K0G1D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | Valle AIrport, Grand Canyon, COCONINO, AZ | 35.64861111, -112.14111111 | 1828.800 m | BANT | 9.100 m structure / 10.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 10.000 m | | | 360.0000 | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 3100 Cumberland Blvd, Atlanta, GA | COBB | 7708504500 |
License history
| Date | File or call sign | Action |
|---|
| 2021-07-28 | WRDD901 | LIAUA |
| 2021-04-14 | WRDD901 | LIMOD |
| 2019-04-04 | WRDD901 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4146123 | 2026-08-02 02:08:35 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDD901 | ULS 4146123 | 2026-08-02 02:08:35 |
| Status | A | ULS 4146123 | 2026-08-02 02:08:35 |
| Service | AF | ULS 4146123 | 2026-08-02 02:08:35 |
| Grant Date | 2019-04-04 | ULS 4146123 | 2026-08-02 02:08:35 |
| Expiration Date | 2029-04-04 | ULS 4146123 | 2026-08-02 02:08:35 |