Universal Licensing System
WPWZ486
Eastern Contra Costa Transit dba Tri Delta Transit Authority
License details
| ULS identifier | 2486686 |
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| Call sign | WPWZ486 |
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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 | 17845 - 22075 MHz (2 frequencies) |
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| Locations | 2 |
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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_micro.zip |
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| Dataset refreshed | 2026-08-02 02:47:02 |
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Licensee
| Name | Eastern Contra Costa Transit dba Tri Delta Transit Authority |
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| Applicant type | G |
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| FRN | 0001532456 |
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| Location | Antioch, CA |
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| Address | 801 Wilbur Avenue, Antioch, CA, 94509 |
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| Phone | 9257546622 |
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| Email | [email protected] |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 2 | FXO | 17845.00000000 | | | | | |
| 1 | 1 | FXO | 22075.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 17845.00000000 | | 9M20D1D |
| 1 | 1 | 22075.00000000 | | 5M00F7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | On Kregor Peak, Clayton, CONTRA COSTA, CA | 37.94297222, -121.89105556 | 571.000 m | TOWER | 22.300 m structure / 22.300 m overall | |
| 2 | R | | 38.01213889, -121.79272222 | 3.000 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 | 48.4000 | | |
| 1 | 2 | R | Andrew VHP2.5-220 | | | 42.6000 | | | |
| 2 | 1 | T | Andrews Corporation VHLPX2.5-18 | | V | 41.0000 | 48.3000 | | |
| 2 | 2 | R | Andrews 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 | WPWZ486 | LIREN |
| 2022-12-16 | WPWZ486 | ESURNW |
| 2022-11-21 | WPWZ486 | LETRES |
| 2022-11-16 | WPWZ486 | ESURNW |
| 2012-11-17 | WPWZ486 | LIREN |
| 2012-11-16 | WPWZ486 | ESUAPR |
| 2010-08-26 | WPWZ486 | LIMOD |
| 2010-07-27 | WPWZ486 | ESUAPR |
| 2003-02-14 | WPWZ486 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 2486686 | 2026-08-02 02:47:02 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPWZ486 | ULS 2486686 | 2026-08-02 02:47:02 |
| Status | A | ULS 2486686 | 2026-08-02 02:47:02 |
| Service | MW | ULS 2486686 | 2026-08-02 02:47:02 |
| Grant Date | 2022-12-29 | ULS 2486686 | 2026-08-02 02:47:02 |
| Expiration Date | 2033-02-14 | ULS 2486686 | 2026-08-02 02:47:02 |