Universal Licensing System
WRDI731
CHALLENGER SCHOOL - SARATOGA
License details
| ULS identifier | 4157996 |
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| Call sign | WRDI731 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2019-05-07 |
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| Expiration | 2029-05-07 |
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| Frequency range | 452.075 - 469.9625 MHz (5 frequencies) |
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| Locations | 1 |
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| Representative location | SARATOGA, SANTA CLARA, CA |
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| Coordinates | 37.2808611, -122.0003056 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:20:59 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | MO | 452.07500000 | | | 25.000000 | 25.000000 | |
| 1 | 1 | MO | 463.60000000 | | | 25.000000 | 25.000000 | |
| 1 | 1 | MO | 467.07500000 | | | 25.000000 | 25.000000 | |
| 1 | 1 | MO | 469.61250000 | | | 25.000000 | 25.000000 | |
| 1 | 1 | MO | 469.96250000 | | | 25.000000 | 25.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.07500000 | | 7K60FXE |
| 1 | 1 | 463.60000000 | | 7K60FXE |
| 1 | 1 | 467.07500000 | | 7K60FXE |
| 1 | 1 | 469.61250000 | | 7K60FXE |
| 1 | 1 | 469.96250000 | | 7K60FXE |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | SARATOGA, SANTA CLARA, CA | 37.28086111, -122.00030556 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 18811 COX AVE, SARATOGA, CA | SANTA CLARA | 8015692700 |
License history
| Date | File or call sign | Action |
|---|
| 2019-05-07 | WRDI731 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
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| ULS | 4157996 | 2026-08-02 01:20:59 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRDI731 | ULS 4157996 | 2026-08-02 01:20:59 |
| Status | A | ULS 4157996 | 2026-08-02 01:20:59 |
| Service | IG | ULS 4157996 | 2026-08-02 01:20:59 |
| Grant Date | 2019-05-07 | ULS 4157996 | 2026-08-02 01:20:59 |
| Expiration Date | 2029-05-07 | ULS 4157996 | 2026-08-02 01:20:59 |