Universal Licensing System
WQDF646
CRYSTAL SMR INC.
License details
| ULS identifier | 2740862 |
|---|
| Call sign | WQDF646 |
|---|
| Radio service | MG |
|---|
| Status | A |
|---|
| Grant date | 2025-06-18 |
|---|
| Expiration | 2035-08-12 |
|---|
| Frequency range | 6109.51 MHz |
|---|
| Locations | 2 |
|---|
| Representative location | SAN LEANDRO, ALAMEDA, CA |
|---|
| Coordinates | 37.7080833, -122.1930556 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-02 02:47:00 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 6109.51000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 6109.51000000 | | 2M50D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 1601 NEPTUNE DR., SAN LEANDRO, ALAMEDA, CA | 37.70808333, -122.19305556 | 2.000 m | TOWER | 15.000 m structure / 16.000 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 P6-57W | | V | 38.5000 | 317.2000 | | |
| 1 | 2 | R | ANDREW CORPORATION HP6-59H | | | 38.9000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-06-18 | WQDF646 | LIREN |
| 2025-05-19 | WQDF646 | LETRES |
| 2015-11-09 | WQDF646 | LIREN |
| 2015-05-18 | WQDF646 | LETRES |
| 2006-11-14 | WQDF646 | LETCNS |
| 2005-08-12 | WQDF646 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2740862 | 2026-08-02 02:47:00 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQDF646 | ULS 2740862 | 2026-08-02 02:47:00 |
| Status | A | ULS 2740862 | 2026-08-02 02:47:00 |
| Service | MG | ULS 2740862 | 2026-08-02 02:47:00 |
| Grant Date | 2025-06-18 | ULS 2740862 | 2026-08-02 02:47:00 |
| Expiration Date | 2035-08-12 | ULS 2740862 | 2026-08-02 02:47:00 |