Universal Licensing System
WQDY507
License details
| ULS identifier | 2766714 |
|---|---|
| Call sign | WQDY507 |
| Radio service | PW |
| Status | A |
| Grant date | 2025-09-03 |
| Expiration | 2035-11-30 |
| Frequency range | 37.12 MHz |
| Locations | 6 |
| Representative location | ANTIOCH, CONTRA COSTA, CA |
| Coordinates | 38.0157500, -121.8207778 |
| 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 | FB | 37.12000000 | 60.000000 | 60.000000 | |||
| 2 | 1 | FB | 37.12000000 | 60.000000 | 60.000000 | |||
| 3 | 1 | FB | 37.12000000 | 60.000000 | 60.000000 | |||
| 4 | 1 | FB | 37.12000000 | 60.000000 | 60.000000 | |||
| 5 | 1 | FB | 37.12000000 | 60.000000 | 60.000000 | |||
| 6 | 1 | FB | 37.12000000 | 60.000000 | 60.000000 |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|---|---|---|---|
| 1 | 1 | 37.12000000 | 12K5F9W | |
| 2 | 1 | 37.12000000 | 12K5F9W | |
| 3 | 1 | 37.12000000 | 12K5F9W | |
| 4 | 1 | 37.12000000 | 12K5F9W | |
| 5 | 1 | 37.12000000 | 12K5F9W | |
| 6 | 1 | 37.12000000 | 12K5F9W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|---|---|---|---|---|---|---|
| 1 | T | 300 L STREET, ANTIOCH, CONTRA COSTA, CA | 38.01575000, -121.82077778 | 4.000 m | TOWER | 18.000 m structure / 23.000 m overall | |
| 2 | T | 1850 MUIR ROAD, MARTINEZ, CONTRA COSTA, CA | 37.99022222, -122.08827778 | 49.700 m | TOWER | 43.000 m structure / 43.900 m overall | N |
| 3 | T | 20 ALLEN STREET, MARTINEZ, CONTRA COSTA, CA | 38.00727778, -122.09163889 | 4.800 m | BMAST | 6.300 m structure / 10.000 m overall | |
| 4 | T | 2900 DOROTHY DRIVE, PLEASANT HILL, CONTRA COSTA, CA | 37.92630556, -122.07911111 | 37.000 m | TOWER | 30.000 m structure / 32.000 m overall | |
| 5 | T | 30 GLACIER DRIVE, MARTINEZ, CONTRA COSTA, CA | 37.98963889, -122.08775000 | 52.000 m | TOWER | 6.000 m structure / 6.000 m overall | |
| 6 | T | 40 GLACIER DR, MARTINEZ, CONTRA COSTA, CA | 37.98972222, -122.08861111 | 51.800 m | TOWER | 42.700 m structure / 42.700 m overall |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 15.000 m | 1.0000 | 360.0000 | -38.800 | ||||
| 1 | 2 | 20.000 m | 1.0000 | 360.0000 | -23.700 | ||||
| 1 | 3 | 10.000 m | 1.0000 | 360.0000 | -65.100 | ||||
| 1 | 4 | 20.000 m | 1.0000 | 360.0000 | -95.400 | ||||
| 1 | 5 | 6.000 m | 1.0000 | 360.0000 | -37.800 | ||||
| 1 | 6 | 20.000 m | 1.0000 | 360.0000 | -2.100 |
Control points
| Number | Address | County | Phone |
|---|---|---|---|
| 1 | 30 DOUGLAS DRIVE, MARTINEZ, CA | CONTRA COSTA | 9253131305 |
License history
| Date | File or call sign | Action |
|---|---|---|
| 2025-09-03 | WQDY507 | LIREN |
| 2020-07-23 | WQDY507 | LIAUA |
| 2020-05-12 | WQDY507 | LIAUA |
| 2015-09-11 | WQDY507 | LIREN |
| 2015-09-10 | WQDY507 | ESUAPR |
| 2015-09-01 | WQDY507 | ESURNW |
| 2012-06-16 | WQDY507 | LIAUA |
| 2012-06-15 | WQDY507 | ESUAPR |
| 2010-06-23 | WQDY507 | LTSAPR |
| 2010-06-22 | WQDY507 | LIAUA |
| 2010-06-22 | WQDY507 | ESCAPR |
| 2010-06-22 | WQDY507 | EFCAPR |
| 2010-06-21 | WQDY507 | EFUAPR |
| 2010-06-21 | WQDY507 | ESUAPR |
| 2007-08-14 | WQDY507 | LIMOD |
| 2005-11-30 | WQDY507 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|---|---|---|
| ULS | 2766714 | 2026-08-02 01:08:36 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|---|---|---|
| Call Sign | WQDY507 | ULS 2766714 | 2026-08-02 01:08:36 |
| Status | A | ULS 2766714 | 2026-08-02 01:08:36 |
| Service | PW | ULS 2766714 | 2026-08-02 01:08:36 |
| Grant Date | 2025-09-03 | ULS 2766714 | 2026-08-02 01:08:36 |
| Expiration Date | 2035-11-30 | ULS 2766714 | 2026-08-02 01:08:36 |