Universal Licensing System
WQDF693
Eastern Contra Costa Transit Authority
License details
| ULS identifier | 2740970 |
|---|
| Call sign | WQDF693 |
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| Radio service | IG |
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| Status | A |
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| Grant date | 2025-07-15 |
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| Expiration | 2035-08-12 |
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| Frequency range | 452.5 - 457.7 MHz (4 frequencies) |
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| Locations | 3 |
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| Representative location | CLAYTON, CONTRA COSTA, CA |
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| Coordinates | 37.9429722, -121.8910556 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:16:32 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB6 | 452.50000000 | | | 25.000000 | 30.000000 | |
| 2 | 1 | MO6 | 452.50000000 | | | 25.000000 | 60.000000 | |
| 1 | 1 | FB6 | 452.70000000 | | | 25.000000 | 30.000000 | |
| 2 | 1 | MO6 | 452.70000000 | | | 25.000000 | 60.000000 | |
| 2 | 1 | MO6 | 457.50000000 | | | 25.000000 | 60.000000 | |
| 3 | 1 | FX1 | 457.50000000 | | | 25.000000 | 60.000000 | |
| 2 | 1 | MO6 | 457.70000000 | | | 25.000000 | 60.000000 | |
| 3 | 1 | FX1 | 457.70000000 | | | 25.000000 | 60.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 452.50000000 | | 11K0F9W |
| 2 | 1 | 452.50000000 | | 11K0F9W |
| 1 | 1 | 452.70000000 | | 11K0F9W |
| 2 | 1 | 452.70000000 | | 11K0F9W |
| 2 | 1 | 457.50000000 | | 11K0F9W |
| 3 | 1 | 457.50000000 | | 11K0F9W |
| 2 | 1 | 457.70000000 | | 11K0F9W |
| 3 | 1 | 457.70000000 | | 11K0F9W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | KREGOR PEAK, CLAYTON, CONTRA COSTA, CA | 37.94297222, -121.89105556 | 577.000 m | TOWER | 24.000 m structure / 24.000 m overall | |
| 2 | T | | | | | | |
| 3 | T | CA | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | | | 20.000 m | | | | 505.000 | |
| 1 | 2 | | | | | | | | |
| 1 | 3 | | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 4728 E 2nd Street, BENICIA, CA | SOLANO | 7077465920 |
License history
| Date | File or call sign | Action |
|---|
| 2025-07-15 | WQDF693 | LIREN |
| 2025-07-13 | WQDF693 | ESURNW |
| 2025-06-13 | WQDF693 | ESURNW |
| 2025-05-19 | WQDF693 | LETRES |
| 2025-05-14 | WQDF693 | ESURNW |
| 2015-05-19 | WQDF693 | LIREN |
| 2015-05-14 | WQDF693 | ESUAPR |
| 2006-06-06 | WQDF693 | LIAUA |
| 2006-06-05 | WQDF693 | ESCAPR |
| 2006-05-15 | WQDF693 | LETCNS |
| 2006-01-06 | WQDF693 | LIASS |
| 2005-09-12 | WQDF693 | LTSAPR |
| 2005-09-09 | WQDF693 | LIAUA |
| 2005-08-12 | WQDF693 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2740970 | 2026-08-02 01:16:32 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQDF693 | ULS 2740970 | 2026-08-02 01:16:32 |
| Status | A | ULS 2740970 | 2026-08-02 01:16:32 |
| Service | IG | ULS 2740970 | 2026-08-02 01:16:32 |
| Grant Date | 2025-07-15 | ULS 2740970 | 2026-08-02 01:16:32 |
| Expiration Date | 2035-08-12 | ULS 2740970 | 2026-08-02 01:16:32 |