Universal Licensing System
WRDF463
California Institute of Technology
License details
| ULS identifier | 4150074 |
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| Call sign | WRDF463 |
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| Radio service | PA |
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| Status | A |
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| Grant date | 2019-04-16 |
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| Expiration | 2029-04-16 |
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| Frequency range | 4955 MHz |
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| Locations | 2 |
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| Representative location | Calipatria, IMPERIAL, CA |
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| Coordinates | 33.1774444, -115.6157500 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:22:43 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FX | 4955.00000000 | | | 0.032000 | 1.600000 | |
| 2 | 1 | FX | 4955.00000000 | | | 0.032000 | 1.600000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 4955.00000000 | | 10M0D7D |
| 2 | 1 | 4955.00000000 | | 10M0D7D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 906 West Sinclair Rd., Calipatria, IMPERIAL, CA | 33.17744444, -115.61575000 | -60.000 m | BMAST | 5.000 m structure / 10.000 m overall | |
| 2 | T | Unnamed Road, Borrego Springs, IMPERIAL, CA | 32.94500000, -115.79991667 | 152.000 m | BPIPE | 3.000 m structure / 3.000 m overall | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 10.000 m | V | 23.0000 | 213.7000 | -50.000 | |
| 1 | 2 | T | | 3.000 m | V | 23.0000 | 33.8000 | 158.000 | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 906 West Sinclair Rd., Calipatria, CA | IMPERIAL | 6263956941 |
| 2 | Unnamed Road, Borrego Springs, CA | IMPERIAL | 6263956941 |
License history
| Date | File or call sign | Action |
|---|
| 2021-05-27 | WRDF463 | LIAUA |
| 2019-04-16 | WRDF463 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4150074 | 2026-08-02 01:22:43 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDF463 | ULS 4150074 | 2026-08-02 01:22:43 |
| Status | A | ULS 4150074 | 2026-08-02 01:22:43 |
| Service | PA | ULS 4150074 | 2026-08-02 01:22:43 |
| Grant Date | 2019-04-16 | ULS 4150074 | 2026-08-02 01:22:43 |
| Expiration Date | 2029-04-16 | ULS 4150074 | 2026-08-02 01:22:43 |