Universal Licensing System
WRBU281
Sprint Spectrum, L.P.
License details
| ULS identifier | 4058244 |
|---|
| Call sign | WRBU281 |
|---|
| Radio service | CF |
|---|
| Status | C |
|---|
| Grant date | 2018-06-20 |
|---|
| Expiration | 2028-06-20 |
|---|
| Cancellation | 2019-11-12 |
|---|
| Frequency range | 21975 - 22025 MHz (2 frequencies) |
|---|
| Locations | 2 |
|---|
| Representative location | San Francisco, SAN FRANCISCO, CA |
|---|
| Coordinates | 37.7803333, -122.3897500 |
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| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:46:57 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 1 | FXO | 21975.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
| 1 | 2 | FXO | 22025.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0D7W |
| 1 | 1 | 21975.00000000 | | 50M0G7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0D7W |
| 1 | 2 | 22025.00000000 | | 50M0G7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 88 King St, San Francisco, SAN FRANCISCO, CA | 37.78033333, -122.38975000 | 5.200 m | B | 50.300 m structure / 50.300 m overall | |
| 2 | R | | 37.78197222, -122.41469444 | 18.000 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | RFS SC2-220BIPN | | V | 41.0000 | 274.7000 | | |
| 1 | 2 | R | RFS SC2-220BIPN | | | 41.0000 | | | |
| 2 | 1 | T | RFS SC2-220BIPN | | H | 41.0000 | 274.7000 | | |
| 2 | 2 | R | RFS SC2-220BIPN | | | 41.0000 | | | |
License history
| Date | File or call sign | Action |
|---|
| 2019-11-13 | WRBU281 | LICAN |
| 2019-09-24 | WRBU281 | LETCNS |
| 2018-06-20 | WRBU281 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 4058244 | 2026-08-02 02:46:57 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WRBU281 | ULS 4058244 | 2026-08-02 02:46:57 |
| Status | C | ULS 4058244 | 2026-08-02 02:46:57 |
| Service | CF | ULS 4058244 | 2026-08-02 02:46:57 |
| Grant Date | 2018-06-20 | ULS 4058244 | 2026-08-02 02:46:57 |
| Expiration Date | 2028-06-20 | ULS 4058244 | 2026-08-02 02:46:57 |
| Cancellation Date | 2019-11-12 | ULS 4058244 | 2026-08-02 02:46:57 |