Universal Licensing System
WDC504
NATIONAL GRID USA SERVICE COMANY INC
License details
| ULS identifier | 1777217 |
|---|---|
| Call sign | WDC504 |
| Radio service | IG |
| Status | C |
| Grant date | 2000-07-27 |
| Expiration | 2005-07-27 |
| Cancellation | 2001-08-08 |
| Frequency range | 173.20375 MHz |
| Locations | 6 |
| Representative location | ANDOVER, ESSEX, MA |
| Coordinates | 42.6550833, -71.2181111 |
| Source archive | l_LMpriv.zip |
| Dataset refreshed | 2026-08-02 01:13:09 |
Licensee
| Name | NATIONAL GRID USA SERVICE COMANY INC |
|---|---|
| Applicant type | C |
| FRN | 0003628997 |
| Location | NORTHBOROUGH, MA |
| Address | 55 BEARFOOT RD, NORTHBOROUGH, MA, 01532 |
| Phone | 5084217799 |
Frequency assignments
| Location | Antenna | Station class | Assigned MHz | Upper MHz | Carrier MHz | Output W | ERP W | Altitude |
|---|---|---|---|---|---|---|---|---|
| 1 | 1 | FXO | 173.20375000 | 50.000000 | 40.000000 | |||
| 2 | 1 | FXO | 173.20375000 | 20.000000 | 110.000000 | |||
| 3 | 1 | FXO | 173.20375000 | 20.000000 | 110.000000 | |||
| 4 | 1 | FXO | 173.20375000 | 20.000000 | 112.000000 | |||
| 5 | 1 | FXO | 173.20375000 | 20.000000 | 91.000000 | |||
| 6 | 1 | FXO | 173.20375000 | 20.000000 | 112.000000 |
Emission designators
| Location | Antenna | Frequency MHz | Upper MHz | Emission |
|---|---|---|---|---|
| 1 | 1 | 173.20375000 | 6K00F2D | |
| 2 | 1 | 173.20375000 | 6K00F2D | |
| 3 | 1 | 173.20375000 | 6K00F2D | |
| 4 | 1 | 173.20375000 | 6K00F2D | |
| 5 | 1 | 173.20375000 | 6K00F2D | |
| 6 | 1 | 173.20375000 | 6K00F2D |
Licensed locations
| Location | Type | Address | Coordinates | Ground elevation | Structure | Height | NEPA |
|---|---|---|---|---|---|---|---|
| 1 | T | WOOD HILL OFF HAGGETTS POND RD, ANDOVER, ESSEX, MA | 42.65508333, -71.21811111 | 109.000 m | TOWER | 72.000 m structure / 82.000 m overall | N |
| 2 | T | LYNNWAY SUBSTATION 436 LYNNNWAY, LYNN, ESSEX, MA | 42.45480556, -70.95144444 | 3.000 m | B | 12.000 m structure / 16.000 m overall | N |
| 3 | T | FILED ST SUBSTATION FIELD ST, QUINCY, NORFOLK, MA | 42.25455556, -70.99172222 | 5.000 m | POLE | 12.000 m structure / 12.000 m overall | N |
| 4 | T | PERRY ST SUBSTATION 107 PERRY ST, LOWELL, MIDDLESEX, MA | 42.63869444, -71.30144444 | 31.000 m | POLE | 7.000 m structure / 8.000 m overall | N |
| 5 | T | WEST ANDOVER SUBSTATION BALLARD RD, ANDOVER, MIDDLESEX, MA | 42.68536111, -71.18838889 | 24.000 m | POLE | 7.000 m structure / 8.000 m overall | N |
| 6 | T | LAWRENCE 1 SUBSTATION S CANAL ST, LAWRENCE, ESSEX, MA | 42.70313889, -71.15672222 | 41.000 m | POLE | 9.000 m structure / 9.000 m overall | N |
Antennas
| Location | Antenna | Type | Make / model | Height | Polarization | Gain dB | Azimuth | Radiation center | Maximum EIRP W |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | T | 46.000 m | 0.000 | |||||
| 1 | 2 | T | 16.000 m | 0.000 | |||||
| 1 | 3 | T | 12.000 m | 0.000 | |||||
| 1 | 4 | T | 8.000 m | 0.000 | |||||
| 1 | 5 | T | 8.000 m | 0.000 | |||||
| 1 | 6 | T | 9.000 m | 0.000 |
Control points
| Number | Address | County | Phone |
|---|---|---|---|
| 1 | WOOD HILL OFF HAGGETTS POND RD, ANDOVER, MA | 6177445776 |
License history
| Date | File or call sign | Action |
|---|---|---|
| 2002-01-17 | WDC504 | AUDCAN |
| 2001-08-10 | WDC504 | LICAN |
| 2000-11-23 | WDC504 | LICCNV |
| 2000-05-18 | WDC504 | AUTHPR |
| 2000-04-27 | WDC504 | LIAUA |
| 2000-04-25 | WDC504 | LETRES |
Sources and provenance
| Source | Source record | Retrieved | Match |
|---|---|---|---|
| ULS | 1777217 | 2026-08-02 01:13:09 | Official Bulk Record |
Selected field provenance
| Field | Displayed value | Source | Observed |
|---|---|---|---|
| Call Sign | WDC504 | ULS 1777217 | 2026-08-02 01:13:09 |
| Status | C | ULS 1777217 | 2026-08-02 01:13:09 |
| Service | IG | ULS 1777217 | 2026-08-02 01:13:09 |
| Grant Date | 2000-07-27 | ULS 1777217 | 2026-08-02 01:13:09 |
| Expiration Date | 2005-07-27 | ULS 1777217 | 2026-08-02 01:13:09 |
| Cancellation Date | 2001-08-08 | ULS 1777217 | 2026-08-02 01:13:09 |