Universal Licensing System
WPWZ487
Eastern Contra Costa Transit dba Tri Delta Transit
License details
| ULS identifier | 2486687 |
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| Call sign | WPWZ487 |
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| Radio service | MW |
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| Status | A |
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| Grant date | 2022-12-29 |
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| Expiration | 2033-02-14 |
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| Frequency range | 19405 - 23275 MHz (2 frequencies) |
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| Locations | 2 |
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| Representative location | Antioch, CONTRA COSTA, CA |
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| Coordinates | 38.0121389, -121.7927222 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:02 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 2 | FXO | 19405.00000000 | | | | | |
| 1 | 1 | FXO | 23275.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 19405.00000000 | | 9M20D1D |
| 1 | 1 | 23275.00000000 | | 5M00F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 801 Wilbur Avenue, Antioch, CONTRA COSTA, CA | 38.01213889, -121.79272222 | 3.000 m | B | 9.100 m structure / 9.100 m overall | |
| 2 | R | | 37.94297222, -121.89105556 | 571.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | Andrew VHP2.5-220 | | V | 42.6000 | 228.4000 | | |
| 1 | 2 | R | Andrew VHP2.5-220 | | | 42.6000 | | | |
| 2 | 1 | T | Andrew Corporation VHLPX2.5-18 | | V | 41.0000 | 228.4000 | | |
| 2 | 2 | R | Andrew Corporation VHLPX2.5-18 | | | 41.0000 | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 801 Wilbur avenue, Antioch, CA | CONTRA COSTA | 9257546622 |
License history
| Date | File or call sign | Action |
|---|
| 2022-12-29 | WPWZ487 | LIREN |
| 2022-11-21 | WPWZ487 | LETRES |
| 2013-01-09 | WPWZ487 | LIREN |
| 2013-01-08 | WPWZ487 | ESUAPR |
| 2012-12-16 | WPWZ487 | ESURNW |
| 2012-11-19 | WPWZ487 | LETRES |
| 2012-11-16 | WPWZ487 | ESURNW |
| 2010-08-26 | WPWZ487 | LIMOD |
| 2010-07-27 | WPWZ487 | ESUAPR |
| 2003-02-14 | WPWZ487 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2486687 | 2026-08-02 02:47:02 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPWZ487 | ULS 2486687 | 2026-08-02 02:47:02 |
| Status | A | ULS 2486687 | 2026-08-02 02:47:02 |
| Service | MW | ULS 2486687 | 2026-08-02 02:47:02 |
| Grant Date | 2022-12-29 | ULS 2486687 | 2026-08-02 02:47:02 |
| Expiration Date | 2033-02-14 | ULS 2486687 | 2026-08-02 02:47:02 |