Universal Licensing System
WNNK470
License details
| ULS identifier | 1892991 |
|---|---|
| Call sign | WNNK470 |
| Radio service | IG |
| Status | A |
| Grant date | 2024-07-09 |
| Expiration | 2034-10-03 |
| Frequency range | 406.125 MHz |
| Locations | 5 |
| Representative location | ORINDA, CONTRA COSTA, CA |
| Coordinates | 37.8832500, -122.2060833 |
| Source archive | l_LMpriv.zip |
| Dataset refreshed | 2026-08-02 01:08:36 |
Licensee
| Name | Contra Costa, County of |
|---|---|
| Applicant type | G |
| FRN | 0001540145 |
| Location | MARTINEZ, CA |
| Address | 30 Douglas Drive, MARTINEZ, CA, 945534068 |
| Phone | 9253131200 |
| [email protected] |
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | FX | 406.12500000 | 4.000000 | 4.000000 | |||
| 2 | 1 | FX | 406.12500000 | 4.000000 | 4.000000 | |||
| 3 | 1 | FX | 406.12500000 | 4.000000 | 4.000000 | |||
| 4 | 1 | FX | 406.12500000 | 4.000000 | 4.000000 | |||
| 5 | 1 | FX | 406.12500000 | 4.000000 | 4.000000 |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|---|---|---|---|
| 1 | 1 | 406.12500000 | 11K2F2D | |
| 2 | 1 | 406.12500000 | 11K2F2D | |
| 3 | 1 | 406.12500000 | 11K2F2D | |
| 4 | 1 | 406.12500000 | 11K2F2D | |
| 5 | 1 | 406.12500000 | 11K2F2D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|---|---|---|---|---|---|---|
| 1 | T | BALD PEAK, ORINDA, CONTRA COSTA, CA | 37.88325000, -122.20608333 | 581.000 m | POLE | 6.000 m structure / 6.000 m overall | N |
| 2 | T | ROCKY RIDGE, DANVILLE, CONTRA COSTA, CA | 37.81658333, -122.06275000 | 616.000 m | B | 3.000 m structure / 3.000 m overall | N |
| 3 | T | CUMMINGS PEAK, CROCKETT, CONTRA COSTA, CA | 38.02825000, -122.19775000 | 273.000 m | B | 3.000 m structure / 3.000 m overall | N |
| 4 | T | KERGOR PEAK, CLAYTON, CONTRA COSTA, CA | 37.94325000, -121.89105556 | 577.000 m | B | 3.000 m structure / 3.000 m overall | N |
| 5 | T | HIGHLAND PEAK, BYRON, CONTRA COSTA, CA | 37.81436111, -121.80827778 | 787.000 m | POLE | 6.000 m structure / 6.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | T | 6.000 m | ||||||
| 1 | 2 | T | 6.000 m | ||||||
| 1 | 3 | T | 6.000 m | ||||||
| 1 | 4 | T | 6.000 m | ||||||
| 1 | 5 | T | 6.000 m |
Control points
| Number | Address | County | Phone |
|---|---|---|---|
| 1 | 255 GLACIER DR, MARTINEZ, CA | 5103132292 |
License history
| Date | File or call sign | Action |
|---|---|---|
| 2024-07-09 | WNNK470 | LIREN |
| 2024-07-08 | WNNK470 | LETRES |
| 2020-07-21 | WNNK470 | LIAUA |
| 2020-05-07 | WNNK470 | LIAUA |
| 2014-07-09 | WNNK470 | LIREN |
| 2014-07-08 | WNNK470 | ESUAPR |
| 2014-07-07 | WNNK470 | LETRES |
| 2012-06-16 | WNNK470 | LIAUA |
| 2012-06-15 | WNNK470 | ESUAPR |
| 2010-06-22 | WNNK470 | LIAUA |
| 2010-06-21 | WNNK470 | ESUAPR |
| 2007-03-21 | WNNK470 | LIMOD |
| 2007-02-20 | WNNK470 | ESUAPR |
| 2004-10-08 | WNNK470 | LIREN |
| 2004-07-07 | WNNK470 | ESUAPR |
| 2004-07-05 | WNNK470 | ESURNW |
| 2000-12-20 | WNNK470 | LIAUA |
| 2000-11-24 | WNNK470 | LICCNV |
| 1999-07-20 | WNNK470 | AUTHPR |
| 1999-07-20 | WNNK470 | LIREN |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|---|---|---|
| ULS | 1892991 | 2026-08-02 01:08:36 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|---|---|---|
| Call Sign | WNNK470 | ULS 1892991 | 2026-08-02 01:08:36 |
| Status | A | ULS 1892991 | 2026-08-02 01:08:36 |
| Service | IG | ULS 1892991 | 2026-08-02 01:08:36 |
| Grant Date | 2024-07-09 | ULS 1892991 | 2026-08-02 01:08:36 |
| Expiration Date | 2034-10-03 | ULS 1892991 | 2026-08-02 01:08:36 |