Universal Licensing System
WNKB690
CONTRA COSTA, COUNTY OF
License details
| ULS identifier | 1224988 |
|---|
| Call sign | WNKB690 |
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| Radio service | PW |
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| Status | A |
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| Grant date | 2022-08-11 |
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| Expiration | 2032-10-26 |
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| Frequency range | 45.08 MHz |
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| Locations | 5 |
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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 01:08:36 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB | 45.08000000 | | | 35.000000 | 35.000000 | |
| 2 | 1 | FB | 45.08000000 | | | 35.000000 | 35.000000 | |
| 3 | 1 | FB | 45.08000000 | | | 35.000000 | 35.000000 | |
| 4 | 1 | FB | 45.08000000 | | | 35.000000 | 35.000000 | |
| 5 | 1 | MO | 45.08000000 | | | 35.000000 | 35.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 45.08000000 | | 20K0F3E |
| 2 | 1 | 45.08000000 | | 20K0F3E |
| 3 | 1 | 45.08000000 | | 20K0F3E |
| 4 | 1 | 45.08000000 | | 20K0F3E |
| 5 | 1 | 45.08000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | KREGER PEAK 2 MI E, CLAYTON, CONTRA COSTA, CA | 37.94297222, -121.89105556 | 577.000 m | | | N |
| 2 | T | BALD PEAK 2 MI W, ORINDA, CONTRA COSTA, CA | 37.88380556, -122.22191667 | 583.000 m | | | N |
| 3 | T | ROCKY RIDGE 3.5 MI W, DANVILLE, CONTRA COSTA, CA | 37.81575000, -122.06219444 | 616.000 m | | | N |
| 4 | T | CUMMINGS PEAK 2 MI SE, CROCKETT, CONTRA COSTA, CA | 38.02880556, -122.19747222 | 273.000 m | | | N |
| 5 | T | CONTRA COSTA, CA | 37.89991667, -121.95941667 | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 21.000 m | | | | | |
| 1 | 2 | T | | 15.000 m | | | | | |
| 1 | 3 | T | | 18.000 m | | | | | |
| 1 | 4 | T | | 18.000 m | | | | | |
| 1 | 5 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 40 GLACIER DR, MARTINEZ, CA | | 9256462441 |
License history
| Date | File or call sign | Action |
|---|
| 2022-08-11 | WNKB690 | LIREN |
| 2022-08-01 | WNKB690 | LETRES |
| 2020-07-21 | WNKB690 | LIAUA |
| 2020-05-07 | WNKB690 | LIAUA |
| 2012-07-31 | WNKB690 | LIREN |
| 2012-07-30 | WNKB690 | LETRES |
| 2012-07-28 | WNKB690 | ESURNW |
| 2012-06-16 | WNKB690 | LIAUA |
| 2012-06-15 | WNKB690 | ESUAPR |
| 2010-06-22 | WNKB690 | LTSAPR |
| 2010-06-22 | WNKB690 | LIAUA |
| 2010-06-21 | WNKB690 | ESCAPR |
| 2010-06-21 | WNKB690 | EFCAPR |
| 2002-08-02 | WNKB690 | LIREN |
| 2002-07-31 | WNKB690 | LIAUA |
| 2002-07-29 | WNKB690 | LETRES |
| 2002-02-19 | WNKB690 | AUDOPR |
| 2000-12-20 | WNKB690 | LIAUA |
| 2000-10-20 | WNKB690 | LICCNV |
| 1997-09-15 | WNKB690 | LIREN |
| 1997-09-15 | WNKB690 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1224988 | 2026-08-02 01:08:36 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WNKB690 | ULS 1224988 | 2026-08-02 01:08:36 |
| Status | A | ULS 1224988 | 2026-08-02 01:08:36 |
| Service | PW | ULS 1224988 | 2026-08-02 01:08:36 |
| Grant Date | 2022-08-11 | ULS 1224988 | 2026-08-02 01:08:36 |
| Expiration Date | 2032-10-26 | ULS 1224988 | 2026-08-02 01:08:36 |