Universal Licensing System
WQWX439
City & County of San Francisco SFPUC ITS-SCADA
License details
| ULS identifier | 3763961 |
|---|
| Call sign | WQWX439 |
|---|
| Radio service | MW |
|---|
| Status | A |
|---|
| Grant date | 2025-09-19 |
|---|
| Expiration | 2035-12-16 |
|---|
| Frequency range | 19525 - 19675 MHz (2 frequencies) |
|---|
| Locations | 2 |
|---|
| Representative location | Millbrae, SAN MATEO, CA |
|---|
| Coordinates | 37.6021389, -122.4245278 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-02 02:43:16 |
|---|
Licensee
| Name | City & County of San Francisco SFPUC ITS-SCADA |
|---|
| Applicant type | G |
|---|
| FRN | 0024264681 |
|---|
| Location | San Francisco, CA |
|---|
| Address | 525 Golden Gate Avenue 5th Floor, San Francisco, CA, 94102 |
|---|
| Phone | 4155514306 |
|---|
| Email | [email protected] |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 2 | FXO | 19525.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
| 1 | 1 | FXO | 19675.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 2 | 19525.00000000 | | 30M0D7W |
| 1 | 2 | 19525.00000000 | | 30M0D7W |
| 1 | 2 | 19525.00000000 | | 30M0D7W |
| 1 | 2 | 19525.00000000 | | 30M0D7W |
| 1 | 2 | 19525.00000000 | | 30M0D7W |
| 1 | 2 | 19525.00000000 | | 30M0D7W |
| 1 | 2 | 19525.00000000 | | 30M0G7W |
| 1 | 2 | 19525.00000000 | | 30M0G7W |
| 1 | 1 | 19675.00000000 | | 30M0D7W |
| 1 | 1 | 19675.00000000 | | 30M0D7W |
| 1 | 1 | 19675.00000000 | | 30M0D7W |
| 1 | 1 | 19675.00000000 | | 30M0D7W |
| 1 | 1 | 19675.00000000 | | 30M0D7W |
| 1 | 1 | 19675.00000000 | | 30M0D7W |
| 1 | 1 | 19675.00000000 | | 30M0G7W |
| 1 | 1 | 19675.00000000 | | 30M0G7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | HT Water Treatment Plant, Millbrae, SAN MATEO, CA | 37.60213889, -122.42452778 | 110.000 m | MAST | 12.200 m structure / 12.200 m overall | |
| 2 | R | | 37.68911111, -122.43758333 | 374.300 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | Commscope VHLPX3-18 | | H | 43.5000 | 353.2000 | | |
| 1 | 2 | R | Commscope VHLPX3-18 | | | 43.5000 | 0.0000 | | |
| 2 | 1 | T | Commscope VHLPX3-18 | | V | 43.5000 | 353.2000 | | |
| 2 | 2 | R | Commscope VHLPX3-18 | | | 43.5000 | 0.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-09-19 | WQWX439 | LIREN |
| 2025-09-17 | WQWX439 | ESURNW |
| 2018-01-26 | WQWX439 | LIAUA |
| 2017-08-03 | WQWX439 | PLAUPR |
| 2017-05-16 | WQWX439 | LETCNS |
| 2017-05-11 | WQWX439 | PLAUPR |
| 2017-03-20 | WQWX439 | LETCNS |
| 2015-12-16 | WQWX439 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 3763961 | 2026-08-02 02:43:16 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WQWX439 | ULS 3763961 | 2026-08-02 02:43:16 |
| Status | A | ULS 3763961 | 2026-08-02 02:43:16 |
| Service | MW | ULS 3763961 | 2026-08-02 02:43:16 |
| Grant Date | 2025-09-19 | ULS 3763961 | 2026-08-02 02:43:16 |
| Expiration Date | 2035-12-16 | ULS 3763961 | 2026-08-02 02:43:16 |