Universal Licensing System
WPBK709
BAY CITIES BUILDING MATERIALS INC
License details
| ULS identifier | 1781787 |
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| Call sign | WPBK709 |
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| Radio service | IG |
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| Status | E |
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| Grant date | 1998-01-12 |
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| Expiration | 2003-01-12 |
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| Cancellation | 2003-04-13 |
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| Frequency range | 43.7 - 47.48 MHz (3 frequencies) |
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| Locations | 4 |
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| Representative location | BRENTWOOD, CONTRA COSTA, CA |
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| Coordinates | 37.9101944, -121.6424444 |
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| Source archive | l_LMpriv.zip |
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| Dataset refreshed | 2026-08-02 01:11:28 |
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Licensee
| Name | BAY CITIES BUILDING MATERIALS INC |
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| Applicant type | C |
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| FRN | 0001546167 |
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| Location | S SAN FRANCISCO, CA |
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| Address | 150 S LINDEN AVE, S SAN FRANCISCO, CA, 94080 |
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| Phone | 6508717470 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 2 | 1 | MO | 43.70000000 | | | 150.000000 | | |
| 3 | 1 | MO | 43.70000000 | | | 150.000000 | | |
| 4 | 1 | MO | 43.70000000 | | | 150.000000 | | |
| 1 | 1 | FB | 47.44000000 | | | 100.000000 | 300.000000 | |
| 1 | 1 | FB2 | 47.48000000 | | | 100.000000 | 300.000000 | |
| 2 | 1 | MO | 47.48000000 | | | 150.000000 | | |
| 3 | 1 | MO | 47.48000000 | | | 150.000000 | | |
| 4 | 1 | MO | 47.48000000 | | | 150.000000 | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 2 | 1 | 43.70000000 | | 20K0F3E |
| 3 | 1 | 43.70000000 | | 20K0F3E |
| 4 | 1 | 43.70000000 | | 20K0F3E |
| 1 | 1 | 47.44000000 | | 20K0F3E |
| 1 | 1 | 47.48000000 | | 20K0F3E |
| 2 | 1 | 47.48000000 | | 20K0F3E |
| 3 | 1 | 47.48000000 | | 20K0F3E |
| 4 | 1 | 47.48000000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 11911 BRENTWOOD BLVD, BRENTWOOD, CONTRA COSTA, CA | 37.91019444, -121.64244444 | 7.000 m | SILO | 14.000 m structure / 21.000 m overall | N |
| 2 | T | CA | | | | | |
| 3 | T | HI | | | | | |
| 4 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 21.000 m | | | | 0.000 | |
| 1 | 2 | T | | | | | | | |
| 1 | 3 | T | | | | | | | |
| 1 | 4 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 150 S LINDEN AVE S, SAN FRANCISCO, CA | | 6508717470 |
License history
| Date | File or call sign | Action |
|---|
| 2003-04-13 | WPBK709 | LIEXP |
| 2002-10-21 | WPBK709 | LETRES |
| 2001-08-31 | WPBK709 | AUDOPR |
| 2000-11-23 | WPBK709 | LICCNV |
| 1999-12-08 | WPBK709 | LIMOD |
| 1999-12-08 | WPBK709 | AUTHPR |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1781787 | 2026-08-02 01:11:28 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WPBK709 | ULS 1781787 | 2026-08-02 01:11:28 |
| Status | E | ULS 1781787 | 2026-08-02 01:11:28 |
| Service | IG | ULS 1781787 | 2026-08-02 01:11:28 |
| Grant Date | 1998-01-12 | ULS 1781787 | 2026-08-02 01:11:28 |
| Expiration Date | 2003-01-12 | ULS 1781787 | 2026-08-02 01:11:28 |
| Cancellation Date | 2003-04-13 | ULS 1781787 | 2026-08-02 01:11:28 |