Universal Licensing System
WSJX581
Massachusetts Bay Transit Authority
License details
| ULS identifier | 5193031 |
|---|
| Call sign | WSJX581 |
|---|
| Radio service | MW |
|---|
| Status | A |
|---|
| Grant date | 2025-09-04 |
|---|
| Expiration | 2035-09-04 |
|---|
| Frequency range | 11445 - 23120 MHz (3 frequencies) |
|---|
| Locations | 2 |
|---|
| Representative location | Boston, SUFFOLK, MA |
|---|
| Coordinates | 42.3537222, -71.0556667 |
|---|
| Source archive | l_micro.zip |
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| Dataset refreshed | 2026-08-02 02:45:08 |
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Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FXO | 11445.00000000 | | | | | |
| 1 | 3 | FXO | 22860.00000000 | | | | | |
| 1 | 3 | FXO | 22860.00000000 | | | | | |
| 1 | 3 | FXO | 22860.00000000 | | | | | |
| 1 | 3 | FXO | 22860.00000000 | | | | | |
| 1 | 2 | FXO | 23120.00000000 | | | | | |
| 1 | 2 | FXO | 23120.00000000 | | | | | |
| 1 | 2 | FXO | 23120.00000000 | | | | | |
| 1 | 2 | FXO | 23120.00000000 | | | | | |
| 1 | 2 | FXO | 23120.00000000 | | | | | |
| 1 | 2 | FXO | 23120.00000000 | | | | | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 11445.00000000 | | 30M0D7W |
| 1 | 3 | 22860.00000000 | | 20M0D7W |
| 1 | 3 | 22860.00000000 | | 20M0D7W |
| 1 | 3 | 22860.00000000 | | 20M0D7W |
| 1 | 3 | 22860.00000000 | | 20M0G7W |
| 1 | 2 | 23120.00000000 | | 36M2D7W |
| 1 | 2 | 23120.00000000 | | 36M2D7W |
| 1 | 2 | 23120.00000000 | | 36M2D7W |
| 1 | 2 | 23120.00000000 | | 35M8D7W |
| 1 | 2 | 23120.00000000 | | 36M3D7W |
| 1 | 2 | 23120.00000000 | | 36M7D7W |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | 45 High St., Boston, SUFFOLK, MA | 42.35372222, -71.05566667 | 5.700 m | BANT | 47.500 m structure / 52.400 m overall | |
| 2 | R | | 42.34938889, -71.07502778 | 3.300 m | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | ANDREW VHLP800-11C | | V | 37.4000 | 253.2000 | | |
| 1 | 2 | R | ANDREW VHLP800-11C | | | 37.4000 | 0.0000 | | |
| 2 | 1 | T | RFS SB1-220B | | V | 35.6000 | 253.2000 | | |
| 2 | 2 | R | RFS SB1-220B | | | 35.6000 | 0.0000 | | |
| 3 | 1 | T | RFS SB1-220C | | V | 35.8000 | 253.2000 | | |
| 3 | 2 | R | RFS SB1-220C | | | 35.8000 | 0.0000 | | |
License history
| Date | File or call sign | Action |
|---|
| 2025-09-04 | WSJX581 | LIISS |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 5193031 | 2026-08-02 02:45:08 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | WSJX581 | ULS 5193031 | 2026-08-02 02:45:08 |
| Status | A | ULS 5193031 | 2026-08-02 02:45:08 |
| Service | MW | ULS 5193031 | 2026-08-02 02:45:08 |
| Grant Date | 2025-09-04 | ULS 5193031 | 2026-08-02 02:45:08 |
| Expiration Date | 2035-09-04 | ULS 5193031 | 2026-08-02 02:45:08 |