Universal Licensing System
KDB418
MASSACHUSETTS BAY TRANSPORTATION AUTHORITY
License details
| ULS identifier | 1920400 |
|---|
| Call sign | KDB418 |
|---|
| Radio service | IG |
|---|
| Status | A |
|---|
| Grant date | 2025-09-26 |
|---|
| Expiration | 2035-12-18 |
|---|
| Frequency range | 475.6375 - 486.5625 MHz (3 frequencies) |
|---|
| Locations | 10 |
|---|
| Representative location | BOSTON, SUFFOLK, MA |
|---|
| Coordinates | 42.3456667, -71.0828333 |
|---|
| Source archive | l_LMpriv.zip |
|---|
| Dataset refreshed | 2026-08-02 01:18:18 |
|---|
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|
| 1 | 1 | FB2 | 472.58750000 | | | 25.000000 | 250.000000 | |
| 7 | 1 | FB2 | 472.58750000 | | | 25.000000 | 21.000000 | |
| 2 | 1 | FB2 | 472.63750000 | | | 60.000000 | 173.000000 | |
| 3 | 1 | FB2 | 472.63750000 | | | 60.000000 | 300.000000 | |
| 3 | 1 | FB2 | 472.68750000 | | | 60.000000 | 300.000000 | |
| 8 | 1 | MO | 475.58750000 | | | 35.000000 | 70.000000 | |
| 9 | 1 | MO | 475.58750000 | | | 35.000000 | 70.000000 | |
| 10 | 1 | MO | 475.58750000 | | | 35.000000 | 70.000000 | |
| 11 | 1 | MO | 475.58750000 | | | 35.000000 | 70.000000 | |
| 12 | 1 | MO | 475.58750000 | | | 35.000000 | 70.000000 | |
| 8 | 1 | MO | 475.63750000 | | | 4.000000 | 8.000000 | |
| 8 | 1 | MO | 475.63750000 | | | 35.000000 | 70.000000 | |
| 9 | 1 | MO | 475.63750000 | | | 4.000000 | 8.000000 | |
| 9 | 1 | MO | 475.63750000 | | | 35.000000 | 70.000000 | |
| 10 | 1 | MO | 475.63750000 | | | 4.000000 | 8.000000 | |
| 10 | 1 | MO | 475.63750000 | | | 35.000000 | 70.000000 | |
| 11 | 1 | MO | 475.63750000 | | | 4.000000 | 8.000000 | |
| 11 | 1 | MO | 475.63750000 | | | 35.000000 | 70.000000 | |
| 12 | 1 | MO | 475.63750000 | | | 4.000000 | 8.000000 | |
| 12 | 1 | MO | 475.63750000 | | | 35.000000 | 70.000000 | |
| 8 | 1 | MO | 475.68750000 | | | 35.000000 | 70.000000 | |
| 9 | 1 | MO | 475.68750000 | | | 35.000000 | 70.000000 | |
| 10 | 1 | MO | 475.68750000 | | | 35.000000 | 70.000000 | |
| 11 | 1 | MO | 475.68750000 | | | 35.000000 | 70.000000 | |
| 12 | 1 | MO | 475.68750000 | | | 35.000000 | 70.000000 | |
| 6 | 1 | FB2 | 483.56250000 | | | 225.000000 | 1000.000000 | |
| 8 | 1 | MO | 486.56250000 | | | 35.000000 | 70.000000 | |
| 9 | 1 | MO | 486.56250000 | | | 35.000000 | 70.000000 | |
| 10 | 1 | MO | 486.56250000 | | | 35.000000 | 70.000000 | |
| 11 | 1 | MO | 486.56250000 | | | 35.000000 | 70.000000 | |
| 12 | 1 | MO | 486.56250000 | | | 35.000000 | 70.000000 | |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|
| 1 | 1 | 472.58750000 | | 20K0F3E |
| 7 | 1 | 472.58750000 | | 20K0F3E |
| 2 | 1 | 472.63750000 | | 15K0F2D |
| 2 | 1 | 472.63750000 | | 20K0F3E |
| 3 | 1 | 472.63750000 | | 15K0F2D |
| 3 | 1 | 472.63750000 | | 20K0F3E |
| 3 | 1 | 472.68750000 | | 15K0F2D |
| 3 | 1 | 472.68750000 | | 20K0F3E |
| 8 | 1 | 475.58750000 | | 20K0F3E |
| 9 | 1 | 475.58750000 | | 20K0F3E |
| 10 | 1 | 475.58750000 | | 20K0F3E |
| 11 | 1 | 475.58750000 | | 20K0F3E |
| 12 | 1 | 475.58750000 | | 20K0F3E |
| 8 | 1 | 475.63750000 | | 20K0F3E |
| 8 | 1 | 475.63750000 | | 20K0F3E |
| 9 | 1 | 475.63750000 | | 20K0F3E |
| 9 | 1 | 475.63750000 | | 20K0F3E |
| 10 | 1 | 475.63750000 | | 20K0F3E |
| 10 | 1 | 475.63750000 | | 20K0F3E |
| 11 | 1 | 475.63750000 | | 20K0F3E |
| 11 | 1 | 475.63750000 | | 20K0F3E |
| 12 | 1 | 475.63750000 | | 20K0F3E |
| 12 | 1 | 475.63750000 | | 20K0F3E |
| 8 | 1 | 475.68750000 | | 20K0F3E |
| 9 | 1 | 475.68750000 | | 20K0F3E |
| 10 | 1 | 475.68750000 | | 20K0F3E |
| 11 | 1 | 475.68750000 | | 20K0F3E |
| 12 | 1 | 475.68750000 | | 20K0F3E |
| 6 | 1 | 483.56250000 | | 20K0F3E |
| 8 | 1 | 486.56250000 | | 20K0F3E |
| 9 | 1 | 486.56250000 | | 20K0F3E |
| 10 | 1 | 486.56250000 | | 20K0F3E |
| 11 | 1 | 486.56250000 | | 20K0F3E |
| 12 | 1 | 486.56250000 | | 20K0F3E |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|
| 1 | T | PRUDENTIAL BLDG BOYLSTON ST, BOSTON, SUFFOLK, MA | 42.34566667, -71.08283333 | 8.000 m | | 238.000 m structure | N |
| 2 | T | SINGLE TREE HILL, BROOKLINE, NORFOLK, MA | 42.32455556, -71.15172222 | 101.000 m | | 24.000 m structure | N |
| 3 | T | 1 BEACON ST, BOSTON, SUFFOLK, MA | 42.35816667, -71.06061111 | 17.000 m | | 149.000 m structure | N |
| 6 | T | 53 STATE ST, BOSTON, SUFFOLK, MA | 42.35900000, -71.05700000 | 12.000 m | | 189.000 m structure | N |
| 7 | T | HARVARD SQ SUBWAY, CAMBRIDGE, MIDDLESEX, MA | 42.37647222, -71.11922222 | 5.000 m | | | N |
| 8 | T | | | | | | |
| 9 | T | | | | | | |
| 10 | T | | | | | | |
| 11 | T | | | | | | |
| 12 | T | | | | | | |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|
| 1 | 1 | T | | 242.000 m | | | | 227.000 | |
| 1 | 2 | T | | 30.000 m | | | | 102.000 | |
| 1 | 3 | T | | 204.000 m | | | | 152.000 | |
| 1 | 6 | T | | 192.000 m | | | | 184.000 | |
| 1 | 7 | T | | -23.000 m | | | | -45.000 | |
| 1 | 8 | T | | | | | | | |
| 1 | 9 | T | | | | | | | |
| 1 | 10 | T | | | | | | | |
| 1 | 11 | T | | | | | | | |
| 1 | 12 | T | | | | | | | |
Control points
| Number | Address | County | Phone |
|---|
| 1 | 45 HIGH ST, BOSTON, MA | SUFFOLK | 6177225777 |
License history
| Date | File or call sign | Action |
|---|
| 2025-09-26 | KDB418 | LIREN |
| 2025-09-22 | KDB418 | LETRES |
| 2025-09-19 | KDB418 | ESURNW |
| 2015-10-08 | KDB418 | LTSAPR |
| 2015-10-08 | KDB418 | LIREN |
| 2015-09-21 | KDB418 | LETRES |
| 2005-10-05 | KDB418 | LTSAPR |
| 2005-10-04 | KDB418 | LIREN |
| 2005-09-26 | KDB418 | LETRES |
| 2002-01-14 | KDB418 | AUDOPR |
| 2001-12-12 | KDB418 | LIMOD |
| 2000-11-24 | KDB418 | LICCNV |
| 2000-10-02 | KDB418 | AUTHPR |
| 2000-09-21 | KDB418 | LETRES |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|
| ULS | 1920400 | 2026-08-02 01:18:18 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|
| Call Sign | KDB418 | ULS 1920400 | 2026-08-02 01:18:18 |
| Status | A | ULS 1920400 | 2026-08-02 01:18:18 |
| Service | IG | ULS 1920400 | 2026-08-02 01:18:18 |
| Grant Date | 2025-09-26 | ULS 1920400 | 2026-08-02 01:18:18 |
| Expiration Date | 2035-12-18 | ULS 1920400 | 2026-08-02 01:18:18 |