Universal Licensing System
WPLK493
LIBERTY UNION HIGH SCHOOL DISTRICT
License details
| ULS identifier | 1786343 |
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| Call sign | WPLK493 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1998-01-07 |
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| Expiration | 2003-01-07 |
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| Cancellation | 2003-04-13 |
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| Frequency range | 461.225 - 468.375 MHz (4 frequencies) |
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| Locations | 4 |
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| Representative location | BRENTWOOD, CONTRA COSTA, CA |
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| Coordinates | 37.9354722, -121.6943889 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:26:37 |
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Licensee
| Name | LIBERTY UNION HIGH SCHOOL DISTRICT |
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| Applicant type | G |
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| Location | BRENTWOOD, CA |
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| Address | 850 SECOND ST, BRENTWOOD, CA, 945131195 |
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| Phone | 5106343812 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 461.22500000 | | | 40.000000 | 120.000000 | |
| 3 | 1 | MO | 461.22500000 | | | 25.000000 | 35.000000 | |
| 2 | 1 | FB2 | 463.37500000 | | | 40.000000 | 120.000000 | |
| 4 | 1 | MO | 463.37500000 | | | 25.000000 | 35.000000 | |
| 3 | 1 | MO | 466.22500000 | | | 25.000000 | 35.000000 | |
| 4 | 1 | MO | 468.37500000 | | | 25.000000 | 25.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 461.22500000 | | 20K0F3E |
| 3 | 1 | 461.22500000 | | 20K0F3E |
| 2 | 1 | 463.37500000 | | 20K0F3E |
| 4 | 1 | 463.37500000 | | 20K0F3E |
| 3 | 1 | 466.22500000 | | 20K0F3E |
| 4 | 1 | 468.37500000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 850 SECOND STREET, BRENTWOOD, CONTRA COSTA, CA | 37.93547222, -121.69438889 | 20.000 m | B | 6.000 m structure / 8.000 m overall | N |
| 2 | T | 1054 NEROLY ROAD, OAKLEY, CONTRA COSTA, CA | 37.96936111, -121.71466667 | 23.000 m | B | 8.000 m structure / 12.000 m overall | N |
| 3 | T | | | | | | |
| 4 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 8.000 m | | | | -36.000 | |
| 1 | 2 | T | | 12.000 m | | | | -13.000 | |
| 1 | 3 | T | | | | | | | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
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| 1 | 850 SECOND STREET, BRENTWOOD, CA | | 5106343812 |
License history
| Date | File or call sign | Action |
|---|
| 2003-04-13 | WPLK493 | LIEXP |
| 2002-10-15 | WPLK493 | LETRES |
| 2002-05-20 | WPLK493 | AUDOPR |
| 2000-11-23 | WPLK493 | LICCNV |
| 1998-01-07 | WPLK493 | LIISS |
| 1998-01-07 | WPLK493 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1786343 | 2026-08-02 01:26:37 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPLK493 | ULS 1786343 | 2026-08-02 01:26:37 |
| Status | E | ULS 1786343 | 2026-08-02 01:26:37 |
| Service | IG | ULS 1786343 | 2026-08-02 01:26:37 |
| Grant Date | 1998-01-07 | ULS 1786343 | 2026-08-02 01:26:37 |
| Expiration Date | 2003-01-07 | ULS 1786343 | 2026-08-02 01:26:37 |
| Cancellation Date | 2003-04-13 | ULS 1786343 | 2026-08-02 01:26:37 |