Universal Licensing System
WRBM381
AT&T Mobility Spectrum, LLC
License details
| ULS identifier | 4038903 |
|---|
| Call sign | WRBM381 |
|---|
| Radio service | CF |
|---|
| Status | A |
|---|
| Grant date | 2018-04-26 |
|---|
| Expiration | 2028-04-26 |
|---|
| Frequency range | 10975 - 11135 MHz (2 frequencies) |
|---|
| Locations | 2 |
|---|
| Representative location | Alameda, ALAMEDA, CA |
|---|
| Coordinates | 37.7867222, -122.3090556 |
|---|
| Source archive | l_micro.zip |
|---|
| Dataset refreshed | 2026-08-02 02:47:17 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 3 | FXO | 10975.00000000 | | | | | |
| 1 | 4 | FXO | 10975.00000000 | | | | | |
| 1 | 5 | FXO | 10975.00000000 | | | | | |
| 1 | 6 | FXO | 10975.00000000 | | | | | |
| 1 | 3 | FXO | 11135.00000000 | | | | | |
| 1 | 4 | FXO | 11135.00000000 | | | | | |
| 1 | 5 | FXO | 11135.00000000 | | | | | |
| 1 | 6 | FXO | 11135.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 3 | 10975.00000000 | | 40M0D7W |
| 1 | 3 | 10975.00000000 | | 40M0D7W |
| 1 | 3 | 10975.00000000 | | 40M0D7W |
| 1 | 3 | 10975.00000000 | | 40M0D7W |
| 1 | 3 | 10975.00000000 | | 40M0D7W |
| 1 | 3 | 10975.00000000 | | 40M0D7W |
| 1 | 3 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 4 | 10975.00000000 | | 40M0D7W |
| 1 | 5 | 10975.00000000 | | 40M0D7W |
| 1 | 5 | 10975.00000000 | | 40M0D7W |
| 1 | 5 | 10975.00000000 | | 40M0D7W |
| 1 | 5 | 10975.00000000 | | 40M0D7W |
| 1 | 5 | 10975.00000000 | | 40M0D7W |
| 1 | 5 | 10975.00000000 | | 40M0D7W |
| 1 | 5 | 10975.00000000 | | 40M0D7W |
| 1 | 6 | 10975.00000000 | | 40M0D7W |
| 1 | 6 | 10975.00000000 | | 40M0D7W |
| 1 | 6 | 10975.00000000 | | 40M0D7W |
| 1 | 6 | 10975.00000000 | | 40M0D7W |
| 1 | 6 | 10975.00000000 | | 40M0D7W |
| 1 | 6 | 10975.00000000 | | 40M0D7W |
| 1 | 6 | 10975.00000000 | | 40M0D7W |
| 1 | 3 | 11135.00000000 | | 40M0D7W |
| 1 | 3 | 11135.00000000 | | 40M0D7W |
| 1 | 3 | 11135.00000000 | | 40M0D7W |
| 1 | 3 | 11135.00000000 | | 40M0D7W |
| 1 | 3 | 11135.00000000 | | 40M0D7W |
| 1 | 3 | 11135.00000000 | | 40M0D7W |
| 1 | 3 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 4 | 11135.00000000 | | 40M0D7W |
| 1 | 5 | 11135.00000000 | | 40M0D7W |
| 1 | 5 | 11135.00000000 | | 40M0D7W |
| 1 | 5 | 11135.00000000 | | 40M0D7W |
| 1 | 5 | 11135.00000000 | | 40M0D7W |
| 1 | 5 | 11135.00000000 | | 40M0D7W |
| 1 | 5 | 11135.00000000 | | 40M0D7W |
| 1 | 5 | 11135.00000000 | | 40M0D7W |
| 1 | 6 | 11135.00000000 | | 40M0D7W |
| 1 | 6 | 11135.00000000 | | 40M0D7W |
| 1 | 6 | 11135.00000000 | | 40M0D7W |
| 1 | 6 | 11135.00000000 | | 40M0D7W |
| 1 | 6 | 11135.00000000 | | 40M0D7W |
| 1 | 6 | 11135.00000000 | | 40M0D7W |
| 1 | 6 | 11135.00000000 | | 40M0D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 2301 Monarch Street, Alameda, ALAMEDA, CA | 37.78672222, -122.30905556 | 2.700 m | B | 15.800 m structure / 16.200 m overall | N |
| 2 | R | | 37.68800000, -122.43636111 | 373.700 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 3 | 1 | T | ANDREW CORPORATION SHPX4-11W | | H | 40.8000 | 225.7000 | | |
| 3 | 2 | R | ANDREW CORPORATION SHPX4-11W | | | 40.8000 | | | |
| 4 | 1 | T | ANDREW CORPORATION SHPX4-11W | | V | 40.8000 | 225.7000 | | |
| 4 | 2 | R | ANDREW CORPORATION SHPX4-11W | | | 40.8000 | | | |
| 5 | 1 | T | ANDREW CORPORATION SHPX4-11W | | H | 40.8000 | 225.7000 | | |
| 5 | 2 | R | ANDREW CORPORATION SHPX4-11W | | | 40.8000 | | | |
| 6 | 1 | T | ANDREW CORPORATION SHPX4-11W | | V | 40.8000 | 225.7000 | | |
| 6 | 2 | R | ANDREW CORPORATION SHPX4-11W | | | 40.8000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2026-06-29 | WRBM381 | LIMOD |
| 2025-09-04 | WRBM381 | LIAUA |
| 2025-04-01 | WRBM381 | LIMOD |
| 2024-05-18 | WRBM381 | LIMOD |
| 2024-01-25 | WRBM381 | LIAUA |
| 2023-11-02 | WRBM381 | LIMOD |
| 2023-01-18 | WRBM381 | LIAUA |
| 2023-01-12 | WRBM381 | LIAUA |
| 2018-08-29 | WRBM381 | LIAUA |
| 2018-08-24 | WRBM381 | LIAUA |
| 2018-04-26 | WRBM381 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4038903 | 2026-08-02 02:47:17 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRBM381 | ULS 4038903 | 2026-08-02 02:47:17 |
| Status | A | ULS 4038903 | 2026-08-02 02:47:17 |
| Service | CF | ULS 4038903 | 2026-08-02 02:47:17 |
| Grant Date | 2018-04-26 | ULS 4038903 | 2026-08-02 02:47:17 |
| Expiration Date | 2028-04-26 | ULS 4038903 | 2026-08-02 02:47:17 |