Universal Licensing System
WQDF644
CRYSTAL SMR INC.
License details
| ULS identifier | 2740858 |
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| Call sign | WQDF644 |
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| Radio service | MG |
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| Status | A |
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| Grant date | 2025-06-18 |
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| Expiration | 2035-08-12 |
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| Frequency range | 6653.75 MHz |
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| Locations | 2 |
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| Representative location | KELLOGG, SONOMA, CA |
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| Coordinates | 38.6563889, -122.6150000 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:00 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
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| 1 | 1 | FXO | 6653.75000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 6653.75000000 | | 2M50D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
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| 1 | T | SAINT HELENA, KELLOGG, SONOMA, CA | 38.65638889, -122.61500000 | 1220.000 m | TOWER | 25.300 m structure / 25.300 m overall | |
| 2 | R | | 38.05955556, -122.60572222 | 575.500 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | ANDREW CORPORATION P6-59 | | V | 38.9000 | 179.3000 | | |
| 1 | 2 | R | ANDREW CORPORATION P6-59 | | | 38.9000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-06-18 | WQDF644 | LIREN |
| 2025-05-19 | WQDF644 | LETRES |
| 2015-11-09 | WQDF644 | LIREN |
| 2015-05-18 | WQDF644 | LETRES |
| 2006-11-14 | WQDF644 | LETCNS |
| 2005-08-12 | WQDF644 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2740858 | 2026-08-02 02:47:00 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
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| Call Sign | WQDF644 | ULS 2740858 | 2026-08-02 02:47:00 |
| Status | A | ULS 2740858 | 2026-08-02 02:47:00 |
| Service | MG | ULS 2740858 | 2026-08-02 02:47:00 |
| Grant Date | 2025-06-18 | ULS 2740858 | 2026-08-02 02:47:00 |
| Expiration Date | 2035-08-12 | ULS 2740858 | 2026-08-02 02:47:00 |